./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 a5e4c58569d8caa47946d30f6cb501096837aef1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 00:52:22,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:52:22,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:52:22,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:52:22,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:52:22,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:52:22,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:52:22,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:52:22,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:52:22,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:52:22,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:52:22,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:52:22,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:52:22,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:52:22,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:52:22,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:52:22,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:52:22,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:52:22,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:52:22,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:52:22,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:52:22,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:52:22,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:52:22,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:52:22,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:52:22,546 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:52:22,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:52:22,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:52:22,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:52:22,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:52:22,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:52:22,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:52:22,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:52:22,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:52:22,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:52:22,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:52:22,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:52:22,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:52:22,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:52:22,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:52:22,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:52:22,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 00:52:22,571 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:52:22,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:52:22,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:52:22,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:52:22,573 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:52:22,573 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 00:52:22,573 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 00:52:22,573 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 00:52:22,576 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 00:52:22,576 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 00:52:22,577 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 00:52:22,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:52:22,578 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 00:52:22,578 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:52:22,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:52:22,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 00:52:22,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 00:52:22,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 00:52:22,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:52:22,579 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 00:52:22,579 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:52:22,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 00:52:22,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:52:22,580 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:52:22,580 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 00:52:22,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:52:22,580 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:52:22,580 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 00:52:22,581 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 00:52:22,581 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 -> a5e4c58569d8caa47946d30f6cb501096837aef1 [2019-11-20 00:52:22,753 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:52:22,766 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:52:22,769 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:52:22,770 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:52:22,770 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:52:22,771 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2019-11-20 00:52:22,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/data/147f364af/ab8f81ba671e4def8343f7dacfcaa694/FLAGa0363a3b7 [2019-11-20 00:52:23,202 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:52:23,203 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2019-11-20 00:52:23,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/data/147f364af/ab8f81ba671e4def8343f7dacfcaa694/FLAGa0363a3b7 [2019-11-20 00:52:23,614 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/data/147f364af/ab8f81ba671e4def8343f7dacfcaa694 [2019-11-20 00:52:23,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:52:23,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:52:23,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:52:23,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:52:23,628 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:52:23,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c93437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23, skipping insertion in model container [2019-11-20 00:52:23,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,636 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:52:23,652 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:52:23,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:52:23,791 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:52:23,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:52:23,879 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:52:23,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23 WrapperNode [2019-11-20 00:52:23,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:52:23,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:52:23,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:52:23,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:52:23,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:52:23,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:52:23,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:52:23,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:52:23,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... [2019-11-20 00:52:23,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:52:23,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:52:23,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:52:23,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:52:23,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:23,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:52:23,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:52:24,147 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:52:24,148 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 00:52:24,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:52:24 BoogieIcfgContainer [2019-11-20 00:52:24,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:52:24,149 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 00:52:24,149 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 00:52:24,152 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 00:52:24,153 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:52:24,153 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:52:23" (1/3) ... [2019-11-20 00:52:24,156 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a60c81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:52:24, skipping insertion in model container [2019-11-20 00:52:24,156 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:52:24,156 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:52:23" (2/3) ... [2019-11-20 00:52:24,156 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4a60c81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:52:24, skipping insertion in model container [2019-11-20 00:52:24,157 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:52:24,157 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:52:24" (3/3) ... [2019-11-20 00:52:24,159 INFO L371 chiAutomizerObserver]: Analyzing ICFG McCarthyIterative.c [2019-11-20 00:52:24,208 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 00:52:24,208 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 00:52:24,209 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 00:52:24,209 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:52:24,209 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:52:24,209 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 00:52:24,209 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:52:24,209 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 00:52:24,219 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-20 00:52:24,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:52:24,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:24,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:24,243 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 00:52:24,243 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:52:24,243 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 00:52:24,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-20 00:52:24,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:52:24,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:24,244 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:24,245 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 00:52:24,245 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:52:24,251 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 3#L12-2true [2019-11-20 00:52:24,251 INFO L796 eck$LassoCheckResult]: Loop: 3#L12-2true assume !!(main_~c~0 > 0); 6#L12true assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 3#L12-2true [2019-11-20 00:52:24,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:24,257 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 00:52:24,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:24,265 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015337583] [2019-11-20 00:52:24,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:24,355 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:24,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:24,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-20 00:52:24,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:24,357 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634011167] [2019-11-20 00:52:24,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:24,376 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:24,378 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-20 00:52:24,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:24,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028852887] [2019-11-20 00:52:24,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:24,406 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:24,521 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-20 00:52:24,571 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:24,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:24,573 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:24,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:24,573 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:24,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:24,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:24,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:24,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2019-11-20 00:52:24,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:24,574 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:24,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:24,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:24,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:24,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:24,710 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:24,711 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:24,727 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:24,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:24,733 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:24,733 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:24,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:24,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:24,749 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:24,749 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:24,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:24,763 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:24,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:24,774 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:24,781 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:24,783 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:24,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:24,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:24,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:24,783 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:24,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:24,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:24,783 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:24,783 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration1_Loop [2019-11-20 00:52:24,784 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:24,784 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:24,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:24,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:24,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:24,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:24,960 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:24,964 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:24,970 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:24,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:24,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:24,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:24,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:24,977 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:24,977 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:52:24,982 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:24,990 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:24,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:24,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:24,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:24,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:24,996 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:24,996 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:52:25,009 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:25,013 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:25,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:25,015 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:25,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:25,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:25,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:25,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:25,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:52:25,020 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:25,023 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 00:52:25,023 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:25,034 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:25,035 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:25,035 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:25,036 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 00:52:25,040 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:52:25,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:25,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:25,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:25,080 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:25,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:25,098 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 00:52:25,100 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-11-20 00:52:25,133 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2019-11-20 00:52:25,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:25,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:25,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-20 00:52:25,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-20 00:52:25,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:25,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 00:52:25,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:25,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-20 00:52:25,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:25,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-11-20 00:52:25,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:52:25,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2019-11-20 00:52:25,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-20 00:52:25,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 00:52:25,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2019-11-20 00:52:25,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:25,147 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 00:52:25,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2019-11-20 00:52:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-20 00:52:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:52:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-20 00:52:25,171 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 00:52:25,171 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 00:52:25,171 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 00:52:25,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-11-20 00:52:25,172 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:52:25,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:25,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:25,173 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 00:52:25,173 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:52:25,173 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 69#L12-2 assume !!(main_~c~0 > 0); 67#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 63#L12-2 [2019-11-20 00:52:25,174 INFO L796 eck$LassoCheckResult]: Loop: 63#L12-2 assume !!(main_~c~0 > 0); 64#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 63#L12-2 [2019-11-20 00:52:25,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,174 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-20 00:52:25,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:25,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414767712] [2019-11-20 00:52:25,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,184 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:25,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-20 00:52:25,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:25,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354753883] [2019-11-20 00:52:25,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,192 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:25,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,192 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2019-11-20 00:52:25,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:25,193 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103885829] [2019-11-20 00:52:25,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,205 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:25,232 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:25,232 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:25,233 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:25,233 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:25,233 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:25,233 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,233 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:25,233 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:25,233 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2019-11-20 00:52:25,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:25,234 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:25,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,333 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:25,333 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:25,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:25,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:25,343 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:25,343 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:25,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:25,347 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:25,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:25,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:25,368 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:25,374 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:25,374 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:25,375 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:25,375 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:25,375 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:25,375 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,375 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:25,375 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:25,375 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration2_Loop [2019-11-20 00:52:25,375 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:25,375 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:25,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,480 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:25,480 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:25,484 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:25,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:25,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:25,486 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:25,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:25,489 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:25,489 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,493 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:25,506 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:25,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:25,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:25,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:25,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:25,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:25,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:25,510 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,516 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:25,520 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:25,520 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:25,532 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:25,533 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:25,533 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:25,533 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-11-20 00:52:25,538 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:25,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:25,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:25,574 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:25,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:25,587 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 [2019-11-20 00:52:25,587 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-20 00:52:25,599 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2019-11-20 00:52:25,600 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 [2019-11-20 00:52:25,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 00:52:25,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 00:52:25,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:25,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 00:52:25,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:25,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2019-11-20 00:52:25,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:25,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2019-11-20 00:52:25,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:52:25,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2019-11-20 00:52:25,603 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 00:52:25,603 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 00:52:25,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2019-11-20 00:52:25,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:25,604 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-20 00:52:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2019-11-20 00:52:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 00:52:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 00:52:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2019-11-20 00:52:25,606 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-20 00:52:25,606 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2019-11-20 00:52:25,606 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 00:52:25,606 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2019-11-20 00:52:25,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-11-20 00:52:25,607 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:25,607 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:25,607 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-20 00:52:25,607 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:52:25,608 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 123#L12-2 assume !!(main_~c~0 > 0); 121#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 124#L12-2 assume !!(main_~c~0 > 0); 125#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 117#L12-2 [2019-11-20 00:52:25,608 INFO L796 eck$LassoCheckResult]: Loop: 117#L12-2 assume !!(main_~c~0 > 0); 118#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 117#L12-2 [2019-11-20 00:52:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,608 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2019-11-20 00:52:25,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:25,608 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864348903] [2019-11-20 00:52:25,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,620 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:25,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-11-20 00:52:25,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:25,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335420123] [2019-11-20 00:52:25,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,634 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2019-11-20 00:52:25,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:25,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199830429] [2019-11-20 00:52:25,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:25,649 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:25,672 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:25,673 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:25,673 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:25,673 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:25,673 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:25,673 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,673 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:25,674 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:25,674 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2019-11-20 00:52:25,674 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:25,674 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:25,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,756 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:25,756 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:25,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:25,777 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:25,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:25,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:25,802 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:25,805 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:25,805 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:25,805 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:25,805 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:25,805 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:25,805 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,805 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:25,805 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:25,806 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration3_Loop [2019-11-20 00:52:25,806 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:25,806 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:25,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:25,900 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:25,900 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:25,918 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:25,919 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:25,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:25,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:25,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:25,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:25,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:25,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,926 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:25,929 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:25,929 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:25,946 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:25,946 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:25,946 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:25,946 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:25,956 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:52:25,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:25,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:25,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:25,990 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:25,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:25,991 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 00:52:25,991 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 00:52:26,000 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-20 00:52:26,001 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 [2019-11-20 00:52:26,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:26,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 00:52:26,002 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 00:52:26,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:26,002 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:26,029 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:26,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:26,035 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:26,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:26,036 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 00:52:26,036 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 00:52:26,046 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2019-11-20 00:52:26,047 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 [2019-11-20 00:52:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 00:52:26,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 00:52:26,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:26,048 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:26,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:26,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:26,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:26,077 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:26,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:26,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:26,078 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 00:52:26,078 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-20 00:52:26,089 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2019-11-20 00:52:26,089 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 [2019-11-20 00:52:26,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-20 00:52:26,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2019-11-20 00:52:26,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:26,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2019-11-20 00:52:26,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:26,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-20 00:52:26,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:26,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2019-11-20 00:52:26,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:52:26,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2019-11-20 00:52:26,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 00:52:26,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 00:52:26,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-20 00:52:26,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:26,094 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-20 00:52:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-20 00:52:26,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2019-11-20 00:52:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 00:52:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-11-20 00:52:26,095 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-20 00:52:26,095 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-11-20 00:52:26,095 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 00:52:26,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-11-20 00:52:26,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:52:26,096 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:26,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:26,101 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 00:52:26,102 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:52:26,102 INFO L794 eck$LassoCheckResult]: Stem: 265#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 261#L12-2 [2019-11-20 00:52:26,102 INFO L796 eck$LassoCheckResult]: Loop: 261#L12-2 assume !!(main_~c~0 > 0); 263#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 261#L12-2 [2019-11-20 00:52:26,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:26,102 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-20 00:52:26,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:26,104 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135197332] [2019-11-20 00:52:26,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:26,109 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:26,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:26,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2019-11-20 00:52:26,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:26,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553390586] [2019-11-20 00:52:26,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:26,128 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:26,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:26,129 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2019-11-20 00:52:26,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:26,129 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473777474] [2019-11-20 00:52:26,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:26,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:26,139 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:26,166 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:26,166 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:26,166 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:26,166 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:26,167 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:26,167 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,167 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:26,167 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:26,167 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2019-11-20 00:52:26,167 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:26,167 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:26,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,234 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:26,235 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:26,243 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,248 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:26,248 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:26,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:26,274 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:26,290 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:26,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=1} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=0}] Lambdas: [0, 1, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:26,316 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,320 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:26,321 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:26,327 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:26,342 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,350 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:26,352 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:26,352 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:26,352 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:26,352 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:26,352 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:26,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,353 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:26,353 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:26,353 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration4_Loop [2019-11-20 00:52:26,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:26,353 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:26,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,436 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:26,436 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:26,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:26,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:26,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:26,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:26,445 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:26,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:26,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,450 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:26,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:26,483 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:26,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:26,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:26,490 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:26,490 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:52:26,501 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:52:26,511 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:26,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:26,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:26,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:26,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:26,515 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:26,515 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,520 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,526 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:26,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:26,527 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:26,527 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:26,527 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:26,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:26,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:26,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:26,537 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:26,537 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,540 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:26,541 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:26,541 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:26,541 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,554 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:52:26,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:26,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:26,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:26,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:26,587 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:26,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:26,588 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 00:52:26,588 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-11-20 00:52:26,596 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 5 states. [2019-11-20 00:52:26,597 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 [2019-11-20 00:52:26,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:26,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2019-11-20 00:52:26,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-20 00:52:26,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:26,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 00:52:26,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:26,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-20 00:52:26,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:26,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2019-11-20 00:52:26,600 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:52:26,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2019-11-20 00:52:26,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-11-20 00:52:26,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-11-20 00:52:26,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2019-11-20 00:52:26,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:26,601 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2019-11-20 00:52:26,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2019-11-20 00:52:26,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-11-20 00:52:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 00:52:26,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2019-11-20 00:52:26,602 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2019-11-20 00:52:26,602 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2019-11-20 00:52:26,602 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 00:52:26,602 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2019-11-20 00:52:26,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:52:26,603 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:26,603 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:26,606 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-11-20 00:52:26,606 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 00:52:26,606 INFO L794 eck$LassoCheckResult]: Stem: 310#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 306#L12-2 assume !!(main_~c~0 > 0); 307#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 313#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2019-11-20 00:52:26,606 INFO L796 eck$LassoCheckResult]: Loop: 311#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 312#L12-2 assume !!(main_~c~0 > 0); 311#L12 [2019-11-20 00:52:26,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:26,607 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-11-20 00:52:26,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:26,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797878409] [2019-11-20 00:52:26,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:26,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797878409] [2019-11-20 00:52:26,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:52:26,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 00:52:26,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506736190] [2019-11-20 00:52:26,674 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 00:52:26,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:26,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-11-20 00:52:26,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:26,675 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045023784] [2019-11-20 00:52:26,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:26,687 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:26,706 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:26,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:26,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:26,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:26,707 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:26,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:26,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:26,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2019-11-20 00:52:26,707 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:26,707 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:26,708 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,776 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:26,776 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:26,781 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:26,793 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,813 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:26,813 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}] Lambdas: [1, 15, 7] Nus: [1, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:26,825 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:26,836 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,843 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:26,844 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:26,844 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:26,844 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:26,844 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:26,844 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:26,845 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,845 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:26,845 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:26,845 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration5_Loop [2019-11-20 00:52:26,845 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:26,845 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:26,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:26,923 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:26,923 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:26,940 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:26,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:26,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:26,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:26,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:26,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:26,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:26,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:52:26,946 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,953 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:26,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:26,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:26,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:26,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:26,958 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:26,958 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,961 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:26,975 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:26,977 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:26,977 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:26,978 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:26,978 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:26,978 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:26,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:26,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:52:26,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,986 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:26,986 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:26,989 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:26,989 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:26,989 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:26,989 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 211 Supporting invariants [] [2019-11-20 00:52:26,991 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:52:27,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,012 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:27,042 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 [2019-11-20 00:52:27,043 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-20 00:52:27,050 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2019-11-20 00:52:27,050 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 [2019-11-20 00:52:27,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 00:52:27,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 00:52:27,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,051 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,073 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,073 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:27,088 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 00:52:27,089 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-20 00:52:27,110 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 5 states. [2019-11-20 00:52:27,111 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 [2019-11-20 00:52:27,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-20 00:52:27,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 00:52:27,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,111 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:27,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,131 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,134 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:27,150 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 00:52:27,150 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-20 00:52:27,156 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2019-11-20 00:52:27,157 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 [2019-11-20 00:52:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 00:52:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-20 00:52:27,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 00:52:27,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 00:52:27,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2019-11-20 00:52:27,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,159 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2019-11-20 00:52:27,160 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 00:52:27,160 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2019-11-20 00:52:27,160 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 00:52:27,160 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-20 00:52:27,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2019-11-20 00:52:27,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:27,161 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2019-11-20 00:52:27,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2019-11-20 00:52:27,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2019-11-20 00:52:27,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:52:27,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-11-20 00:52:27,162 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-11-20 00:52:27,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:52:27,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:52:27,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:52:27,165 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand 4 states. [2019-11-20 00:52:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:52:27,180 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2019-11-20 00:52:27,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 00:52:27,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-11-20 00:52:27,181 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:52:27,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 8 states and 10 transitions. [2019-11-20 00:52:27,181 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 00:52:27,181 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-20 00:52:27,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2019-11-20 00:52:27,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:27,182 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-11-20 00:52:27,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2019-11-20 00:52:27,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-11-20 00:52:27,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:52:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-11-20 00:52:27,183 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-20 00:52:27,183 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-11-20 00:52:27,183 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 00:52:27,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-11-20 00:52:27,184 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:52:27,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:27,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:27,184 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1] [2019-11-20 00:52:27,184 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2019-11-20 00:52:27,184 INFO L794 eck$LassoCheckResult]: Stem: 460#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 456#L12-2 assume !!(main_~c~0 > 0); 457#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2019-11-20 00:52:27,184 INFO L796 eck$LassoCheckResult]: Loop: 461#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 458#L12-2 assume !!(main_~c~0 > 0); 459#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 462#L12-2 assume !!(main_~c~0 > 0); 461#L12 [2019-11-20 00:52:27,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,185 INFO L82 PathProgramCache]: Analyzing trace with hash 925824930, now seen corresponding path program 3 times [2019-11-20 00:52:27,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:27,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296431662] [2019-11-20 00:52:27,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:27,193 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:27,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2019-11-20 00:52:27,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:27,194 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161808573] [2019-11-20 00:52:27,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:27,200 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:27,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1848815782, now seen corresponding path program 4 times [2019-11-20 00:52:27,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:27,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168652336] [2019-11-20 00:52:27,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:27,212 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:27,259 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:27,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:27,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:27,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:27,260 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:27,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:27,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:27,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:27,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2019-11-20 00:52:27,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:27,260 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:27,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:27,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:27,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:27,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:27,338 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:27,339 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:27,349 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:27,349 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:27,354 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:27,354 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:27,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:27,363 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:27,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:27,368 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:27,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:27,374 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:27,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:27,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:27,391 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:27,393 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:27,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:27,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:27,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:27,394 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:27,394 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:27,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:27,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:27,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration6_Loop [2019-11-20 00:52:27,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:27,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:27,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:27,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:27,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:27,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:27,462 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:27,463 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:27,471 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:27,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:27,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:27,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:27,473 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:27,473 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:27,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:27,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:27,476 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:27,479 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:27,479 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:27,482 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:27,482 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:27,482 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:27,482 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -2*ULTIMATE.start_main_~x~0 + 201 Supporting invariants [] Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:27,483 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:52:27,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:27,535 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 [2019-11-20 00:52:27,535 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-20 00:52:27,544 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2019-11-20 00:52:27,544 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 [2019-11-20 00:52:27,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:52:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 00:52:27,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 00:52:27,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,545 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:27,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:27,594 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 00:52:27,594 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-20 00:52:27,607 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 5 states. [2019-11-20 00:52:27,610 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 [2019-11-20 00:52:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:52:27,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-20 00:52:27,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 00:52:27,611 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,611 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:27,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,637 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:27,676 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 00:52:27,676 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-20 00:52:27,690 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2019-11-20 00:52:27,691 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 [2019-11-20 00:52:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:52:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2019-11-20 00:52:27,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 00:52:27,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,692 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,710 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:27,740 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 00:52:27,740 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-20 00:52:27,752 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 18 transitions. Complement of second has 4 states. [2019-11-20 00:52:27,754 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 [2019-11-20 00:52:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:52:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-20 00:52:27,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 00:52:27,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,754 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:27,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:27,812 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 00:52:27,813 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2019-11-20 00:52:27,877 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. Result 72 states and 96 transitions. Complement of second has 37 states 8 powerset states29 rank states. The highest rank that occured is 5 [2019-11-20 00:52:27,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:52:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-20 00:52:27,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 00:52:27,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,880 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-20 00:52:27,880 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 8 letters. [2019-11-20 00:52:27,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:27,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2019-11-20 00:52:27,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 00:52:27,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 27 states and 38 transitions. [2019-11-20 00:52:27,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2019-11-20 00:52:27,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2019-11-20 00:52:27,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 38 transitions. [2019-11-20 00:52:27,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:27,887 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2019-11-20 00:52:27,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 38 transitions. [2019-11-20 00:52:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2019-11-20 00:52:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 00:52:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2019-11-20 00:52:27,890 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-11-20 00:52:27,890 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-11-20 00:52:27,890 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 00:52:27,891 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2019-11-20 00:52:27,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 00:52:27,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:27,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:27,892 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1] [2019-11-20 00:52:27,892 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2019-11-20 00:52:27,892 INFO L794 eck$LassoCheckResult]: Stem: 822#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 823#L12-2 assume !!(main_~c~0 > 0); 826#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2019-11-20 00:52:27,892 INFO L796 eck$LassoCheckResult]: Loop: 824#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 825#L12-2 assume !!(main_~c~0 > 0); 830#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L12-2 assume !!(main_~c~0 > 0); 828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 827#L12-2 assume !!(main_~c~0 > 0); 824#L12 [2019-11-20 00:52:27,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,892 INFO L82 PathProgramCache]: Analyzing trace with hash 659527871, now seen corresponding path program 5 times [2019-11-20 00:52:27,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:27,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692107320] [2019-11-20 00:52:27,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 00:52:27,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692107320] [2019-11-20 00:52:27,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35576993] [2019-11-20 00:52:27,941 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:52:27,965 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-20 00:52:27,965 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:52:27,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 00:52:27,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:27,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 00:52:27,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:52:27,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 00:52:27,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092769996] [2019-11-20 00:52:27,969 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 00:52:27,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 2 times [2019-11-20 00:52:27,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:27,969 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071915342] [2019-11-20 00:52:27,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:27,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:27,977 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:28,038 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:28,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:28,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:28,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:28,039 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:28,039 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,039 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:28,039 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:28,039 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2019-11-20 00:52:28,039 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:28,039 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:28,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,099 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:28,099 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:28,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:28,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:28,105 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:28,105 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:28,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:28,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:28,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:28,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:28,116 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:28,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:28,164 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:28,166 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:28,166 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:28,166 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:28,166 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:28,166 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:28,166 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,166 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:28,166 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:28,166 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration7_Loop [2019-11-20 00:52:28,166 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:28,166 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:28,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,232 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:28,232 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:52:28,238 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:28,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:28,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:28,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:28,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:28,242 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:28,242 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,246 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:52:28,252 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:28,253 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:28,253 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:28,254 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:28,254 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:28,256 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:28,256 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,259 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:52:28,265 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:28,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:28,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:28,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:28,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:28,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:28,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:28,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,270 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:28,272 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 00:52:28,272 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:52:28,276 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:28,276 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:28,277 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:28,277 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-11-20 00:52:28,279 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:28,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:28,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:28,306 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:52:28,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 00:52:28,324 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 [2019-11-20 00:52:28,324 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9 Second operand 5 states. [2019-11-20 00:52:28,357 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 61 states and 87 transitions. Complement of second has 9 states. [2019-11-20 00:52:28,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 00:52:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2019-11-20 00:52:28,357 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2019-11-20 00:52:28,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:28,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 14 letters. Loop has 6 letters. [2019-11-20 00:52:28,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:28,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 12 letters. [2019-11-20 00:52:28,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:28,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2019-11-20 00:52:28,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 00:52:28,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 52 states and 75 transitions. [2019-11-20 00:52:28,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 00:52:28,360 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-20 00:52:28,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 75 transitions. [2019-11-20 00:52:28,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:28,361 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 75 transitions. [2019-11-20 00:52:28,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 75 transitions. [2019-11-20 00:52:28,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2019-11-20 00:52:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-20 00:52:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2019-11-20 00:52:28,365 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 67 transitions. [2019-11-20 00:52:28,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:52:28,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 00:52:28,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 00:52:28,366 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand 5 states. [2019-11-20 00:52:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:52:28,384 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2019-11-20 00:52:28,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 00:52:28,384 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 51 transitions. [2019-11-20 00:52:28,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 00:52:28,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 27 states and 36 transitions. [2019-11-20 00:52:28,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2019-11-20 00:52:28,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2019-11-20 00:52:28,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2019-11-20 00:52:28,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:28,386 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2019-11-20 00:52:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2019-11-20 00:52:28,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2019-11-20 00:52:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-20 00:52:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2019-11-20 00:52:28,388 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-20 00:52:28,388 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2019-11-20 00:52:28,388 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 00:52:28,389 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2019-11-20 00:52:28,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 00:52:28,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:28,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:28,390 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 2, 2, 1] [2019-11-20 00:52:28,390 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2019-11-20 00:52:28,390 INFO L794 eck$LassoCheckResult]: Stem: 1076#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1077#L12-2 assume !!(main_~c~0 > 0); 1093#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1091#L12-2 assume !!(main_~c~0 > 0); 1084#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2019-11-20 00:52:28,390 INFO L796 eck$LassoCheckResult]: Loop: 1078#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1079#L12-2 assume !!(main_~c~0 > 0); 1085#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L12-2 assume !!(main_~c~0 > 0); 1082#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1081#L12-2 assume !!(main_~c~0 > 0); 1078#L12 [2019-11-20 00:52:28,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:28,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1791617062, now seen corresponding path program 6 times [2019-11-20 00:52:28,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:28,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818259633] [2019-11-20 00:52:28,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:28,403 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:28,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:28,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 3 times [2019-11-20 00:52:28,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:28,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503752360] [2019-11-20 00:52:28,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:28,411 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:28,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:28,412 INFO L82 PathProgramCache]: Analyzing trace with hash 709032111, now seen corresponding path program 7 times [2019-11-20 00:52:28,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:28,412 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808872092] [2019-11-20 00:52:28,412 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:28,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808872092] [2019-11-20 00:52:28,492 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85610837] [2019-11-20 00:52:28,492 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:28,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:52:28,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 00:52:28,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:52:28,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2019-11-20 00:52:28,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890788120] [2019-11-20 00:52:28,645 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:28,645 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:28,645 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:28,645 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:28,645 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:28,645 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,645 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:28,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:28,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2019-11-20 00:52:28,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:28,646 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:28,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,711 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:28,711 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:28,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:28,719 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:28,719 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:28,723 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:28,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:28,787 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:28,788 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:28,788 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:28,789 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:28,789 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:28,789 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:28,789 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,789 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:28,789 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:28,789 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration8_Loop [2019-11-20 00:52:28,789 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:28,789 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:28,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:28,857 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:28,857 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:28,892 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:28,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:28,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:28,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:28,895 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:28,895 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:52:28,898 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:52:28,909 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:28,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:28,911 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:28,911 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:28,911 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:28,911 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:28,912 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:28,912 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,915 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:28,917 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:28,918 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:52:28,922 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:28,922 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:28,922 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:28,922 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 00:52:28,925 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:28,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:28,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:28,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:52:28,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:28,987 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 00:52:28,987 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-11-20 00:52:29,003 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2019-11-20 00:52:29,010 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 [2019-11-20 00:52:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 00:52:29,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-20 00:52:29,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-20 00:52:29,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:29,010 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,040 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:29,064 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 00:52:29,065 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-11-20 00:52:29,080 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2019-11-20 00:52:29,081 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 [2019-11-20 00:52:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 00:52:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2019-11-20 00:52:29,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-20 00:52:29,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:29,082 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:29,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:29,155 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 00:52:29,155 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2019-11-20 00:52:29,178 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 75 states and 99 transitions. Complement of second has 13 states. [2019-11-20 00:52:29,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:29,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 00:52:29,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2019-11-20 00:52:29,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2019-11-20 00:52:29,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:29,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2019-11-20 00:52:29,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:29,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2019-11-20 00:52:29,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:29,183 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 99 transitions. [2019-11-20 00:52:29,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2019-11-20 00:52:29,187 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 52 states and 71 transitions. [2019-11-20 00:52:29,187 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 00:52:29,187 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-20 00:52:29,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 71 transitions. [2019-11-20 00:52:29,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:29,188 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2019-11-20 00:52:29,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 71 transitions. [2019-11-20 00:52:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-20 00:52:29,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 00:52:29,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2019-11-20 00:52:29,191 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2019-11-20 00:52:29,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:52:29,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-20 00:52:29,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2019-11-20 00:52:29,191 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 15 states. [2019-11-20 00:52:29,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:52:29,342 INFO L93 Difference]: Finished difference Result 143 states and 181 transitions. [2019-11-20 00:52:29,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-20 00:52:29,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 181 transitions. [2019-11-20 00:52:29,345 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2019-11-20 00:52:29,346 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 109 states and 145 transitions. [2019-11-20 00:52:29,346 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 00:52:29,346 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2019-11-20 00:52:29,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 145 transitions. [2019-11-20 00:52:29,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:29,346 INFO L688 BuchiCegarLoop]: Abstraction has 109 states and 145 transitions. [2019-11-20 00:52:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states and 145 transitions. [2019-11-20 00:52:29,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 33. [2019-11-20 00:52:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 00:52:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2019-11-20 00:52:29,352 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-20 00:52:29,352 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2019-11-20 00:52:29,352 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-20 00:52:29,352 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2019-11-20 00:52:29,352 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-20 00:52:29,352 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:29,352 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:29,353 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-20 00:52:29,353 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 2, 2] [2019-11-20 00:52:29,353 INFO L794 eck$LassoCheckResult]: Stem: 1722#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1724#L12-2 assume !!(main_~c~0 > 0); 1738#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1735#L12-2 assume !!(main_~c~0 > 0); 1729#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1718#L12-2 [2019-11-20 00:52:29,353 INFO L796 eck$LassoCheckResult]: Loop: 1718#L12-2 assume !!(main_~c~0 > 0); 1719#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1728#L12-2 assume !!(main_~c~0 > 0); 1734#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1733#L12-2 assume !!(main_~c~0 > 0); 1725#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1726#L12-2 assume !!(main_~c~0 > 0); 1729#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1718#L12-2 [2019-11-20 00:52:29,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,353 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 4 times [2019-11-20 00:52:29,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:29,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964495226] [2019-11-20 00:52:29,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:29,362 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:29,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1687002897, now seen corresponding path program 4 times [2019-11-20 00:52:29,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:29,363 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154774517] [2019-11-20 00:52:29,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 00:52:29,383 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154774517] [2019-11-20 00:52:29,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:52:29,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 00:52:29,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521031408] [2019-11-20 00:52:29,384 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 00:52:29,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:52:29,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 00:52:29,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 00:52:29,384 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 Second operand 4 states. [2019-11-20 00:52:29,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:52:29,394 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2019-11-20 00:52:29,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 00:52:29,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2019-11-20 00:52:29,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-20 00:52:29,397 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 39 states and 47 transitions. [2019-11-20 00:52:29,397 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 00:52:29,397 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 00:52:29,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2019-11-20 00:52:29,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:29,397 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 47 transitions. [2019-11-20 00:52:29,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2019-11-20 00:52:29,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2019-11-20 00:52:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 00:52:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2019-11-20 00:52:29,399 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-11-20 00:52:29,400 INFO L591 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-11-20 00:52:29,400 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-20 00:52:29,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 41 transitions. [2019-11-20 00:52:29,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-20 00:52:29,400 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:29,400 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:29,401 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-20 00:52:29,401 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 3, 2] [2019-11-20 00:52:29,401 INFO L794 eck$LassoCheckResult]: Stem: 1813#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 1815#L12-2 assume !!(main_~c~0 > 0); 1829#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1828#L12-2 assume !!(main_~c~0 > 0); 1821#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1809#L12-2 [2019-11-20 00:52:29,401 INFO L796 eck$LassoCheckResult]: Loop: 1809#L12-2 assume !!(main_~c~0 > 0); 1810#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1819#L12-2 assume !!(main_~c~0 > 0); 1826#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1823#L12-2 assume !!(main_~c~0 > 0); 1816#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1817#L12-2 assume !!(main_~c~0 > 0); 1827#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 1824#L12-2 assume !!(main_~c~0 > 0); 1820#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 1809#L12-2 [2019-11-20 00:52:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,401 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 5 times [2019-11-20 00:52:29,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:29,401 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679721522] [2019-11-20 00:52:29,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:29,407 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:29,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2007111828, now seen corresponding path program 5 times [2019-11-20 00:52:29,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:29,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110894794] [2019-11-20 00:52:29,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:29,417 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,417 INFO L82 PathProgramCache]: Analyzing trace with hash -254222659, now seen corresponding path program 8 times [2019-11-20 00:52:29,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:29,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341467413] [2019-11-20 00:52:29,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:29,429 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:29,504 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:29,504 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:29,504 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:29,504 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:29,504 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:29,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:29,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:29,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:29,505 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2019-11-20 00:52:29,505 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:29,505 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:29,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:29,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:29,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:29,518 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:29,555 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:29,555 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:29,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:29,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:29,561 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:52:29,561 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:29,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:29,566 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:29,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:29,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:29,578 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:29,580 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:29,580 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:29,580 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:29,580 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:29,580 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:29,580 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:29,580 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:29,580 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:29,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration10_Loop [2019-11-20 00:52:29,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:29,581 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:29,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:29,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:29,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:29,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:29,654 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:29,654 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:29,662 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:29,664 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:29,664 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:29,664 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:29,664 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:29,666 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 00:52:29,666 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 00:52:29,668 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:29,671 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:29,673 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:29,673 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:29,673 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:29,673 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:29,673 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:29,674 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:29,674 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:52:29,678 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:29,680 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:29,680 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:29,682 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:29,682 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:29,683 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:29,683 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 00:52:29,684 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:52:29,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,702 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:29,770 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 [2019-11-20 00:52:29,770 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-20 00:52:29,777 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2019-11-20 00:52:29,777 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 [2019-11-20 00:52:29,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:52:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-20 00:52:29,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-20 00:52:29,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:29,778 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:29,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:29,848 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 00:52:29,848 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-20 00:52:29,851 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2019-11-20 00:52:29,852 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 [2019-11-20 00:52:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:52:29,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-20 00:52:29,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-20 00:52:29,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:29,852 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,879 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:29,913 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 00:52:29,913 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-20 00:52:29,920 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 46 states and 60 transitions. Complement of second has 4 states. [2019-11-20 00:52:29,921 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 [2019-11-20 00:52:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:52:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-20 00:52:29,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-20 00:52:29,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:29,921 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:29,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,939 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,940 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:29,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:52:29,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:30,006 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 00:52:30,007 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-20 00:52:30,046 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 63 states and 75 transitions. Complement of second has 8 states. [2019-11-20 00:52:30,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:52:30,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-20 00:52:30,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-20 00:52:30,047 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:30,047 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:30,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,144 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:30,144 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 00:52:30,144 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2019-11-20 00:52:30,194 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,194 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,195 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,195 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,196 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,231 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,232 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,232 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,232 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,233 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,233 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,233 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,234 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:30,246 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. Result 404 states and 547 transitions. Complement of second has 85 states 12 powerset states73 rank states. The highest rank that occured is 7 [2019-11-20 00:52:30,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:52:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2019-11-20 00:52:30,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-20 00:52:30,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:30,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 15 letters. Loop has 10 letters. [2019-11-20 00:52:30,249 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:30,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 20 letters. [2019-11-20 00:52:30,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:30,252 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 404 states and 547 transitions. [2019-11-20 00:52:30,258 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2019-11-20 00:52:30,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 404 states to 145 states and 187 transitions. [2019-11-20 00:52:30,260 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 00:52:30,260 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 00:52:30,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 187 transitions. [2019-11-20 00:52:30,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:30,260 INFO L688 BuchiCegarLoop]: Abstraction has 145 states and 187 transitions. [2019-11-20 00:52:30,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 187 transitions. [2019-11-20 00:52:30,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2019-11-20 00:52:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-11-20 00:52:30,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 129 transitions. [2019-11-20 00:52:30,267 INFO L711 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2019-11-20 00:52:30,267 INFO L591 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2019-11-20 00:52:30,267 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-20 00:52:30,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 129 transitions. [2019-11-20 00:52:30,268 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2019-11-20 00:52:30,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:30,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:30,269 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-20 00:52:30,269 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 4, 3] [2019-11-20 00:52:30,269 INFO L794 eck$LassoCheckResult]: Stem: 2806#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 2809#L12-2 assume !!(main_~c~0 > 0); 2833#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2829#L12-2 assume !!(main_~c~0 > 0); 2815#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2802#L12-2 [2019-11-20 00:52:30,269 INFO L796 eck$LassoCheckResult]: Loop: 2802#L12-2 assume !!(main_~c~0 > 0); 2803#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2864#L12-2 assume !!(main_~c~0 > 0); 2857#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2855#L12-2 assume !!(main_~c~0 > 0); 2849#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2848#L12-2 assume !!(main_~c~0 > 0); 2847#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2839#L12-2 assume !!(main_~c~0 > 0); 2818#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2830#L12-2 assume !!(main_~c~0 > 0); 2828#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 2826#L12-2 assume !!(main_~c~0 > 0); 2814#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 2802#L12-2 [2019-11-20 00:52:30,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:30,270 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 6 times [2019-11-20 00:52:30,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:30,270 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288512222] [2019-11-20 00:52:30,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:30,276 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:30,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:30,276 INFO L82 PathProgramCache]: Analyzing trace with hash 822111324, now seen corresponding path program 6 times [2019-11-20 00:52:30,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:30,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951528972] [2019-11-20 00:52:30,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:30,287 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:30,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:30,287 INFO L82 PathProgramCache]: Analyzing trace with hash 128316933, now seen corresponding path program 9 times [2019-11-20 00:52:30,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:30,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363688588] [2019-11-20 00:52:30,288 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:30,310 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:30,413 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:30,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:30,414 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:30,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:30,414 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:30,414 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:30,414 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:30,414 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:30,414 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2019-11-20 00:52:30,414 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:30,414 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:30,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:30,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:30,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:30,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:30,468 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:30,468 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:30,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:30,471 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:30,477 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:30,477 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:52:30,480 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:30,481 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:30,481 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:30,481 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:30,482 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:30,482 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:30,482 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:30,482 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:30,482 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:30,482 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration11_Loop [2019-11-20 00:52:30,482 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:30,482 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:30,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:30,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:30,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:30,496 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:30,553 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:30,553 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:30,556 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:30,557 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:30,557 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:30,558 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:30,558 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:30,558 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:30,559 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:30,559 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:52:30,560 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:30,563 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:30,563 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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 [2019-11-20 00:52:30,566 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:30,566 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:30,566 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:30,566 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 00:52:30,567 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:52:30,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,590 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:30,667 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 [2019-11-20 00:52:30,667 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-20 00:52:30,676 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2019-11-20 00:52:30,677 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 [2019-11-20 00:52:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 00:52:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-20 00:52:30,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-20 00:52:30,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:30,677 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:30,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,693 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:30,775 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-20 00:52:30,775 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-20 00:52:30,788 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2019-11-20 00:52:30,788 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 [2019-11-20 00:52:30,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 00:52:30,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-20 00:52:30,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-20 00:52:30,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:30,789 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:30,887 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-20 00:52:30,887 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-20 00:52:30,892 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 146 states and 191 transitions. Complement of second has 4 states. [2019-11-20 00:52:30,894 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 [2019-11-20 00:52:30,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 00:52:30,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-20 00:52:30,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-20 00:52:30,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:30,894 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:30,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,913 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:30,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:52:30,921 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:30,999 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:30,999 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-20 00:52:31,000 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-20 00:52:31,025 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 9 states. Result 172 states and 219 transitions. Complement of second has 8 states. [2019-11-20 00:52:31,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:31,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 00:52:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-11-20 00:52:31,030 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-20 00:52:31,030 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:31,031 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:31,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:31,048 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:31,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:52:31,059 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:31,136 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:52:31,136 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2019-11-20 00:52:31,136 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. [2019-11-20 00:52:31,192 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,192 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,193 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,194 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,194 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,195 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,195 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,195 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,197 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,197 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,197 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,198 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,254 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,255 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,255 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,255 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,258 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,258 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,258 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,259 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,259 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,259 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,259 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,260 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,260 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,260 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,261 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,261 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,263 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,263 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,264 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,264 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,264 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,265 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,265 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,265 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,314 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,314 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,315 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,315 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,315 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,316 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,318 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,319 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,319 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,319 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,320 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,320 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,320 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,320 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,321 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,321 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,321 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,322 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,322 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,322 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,322 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,323 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,323 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,323 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,324 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,324 WARN L278 uchiComplementFKVNwa]: big8 [2019-11-20 00:52:31,361 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 9 states. Result 1787 states and 2714 transitions. Complement of second has 144 states 16 powerset states128 rank states. The highest rank that occured is 7 [2019-11-20 00:52:31,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 00:52:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2019-11-20 00:52:31,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 14 letters. [2019-11-20 00:52:31,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:31,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 19 letters. Loop has 14 letters. [2019-11-20 00:52:31,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:31,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 5 letters. Loop has 28 letters. [2019-11-20 00:52:31,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:31,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1787 states and 2714 transitions. [2019-11-20 00:52:31,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2019-11-20 00:52:31,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1787 states to 471 states and 636 transitions. [2019-11-20 00:52:31,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 00:52:31,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 00:52:31,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 471 states and 636 transitions. [2019-11-20 00:52:31,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:52:31,395 INFO L688 BuchiCegarLoop]: Abstraction has 471 states and 636 transitions. [2019-11-20 00:52:31,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states and 636 transitions. [2019-11-20 00:52:31,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 260. [2019-11-20 00:52:31,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2019-11-20 00:52:31,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 376 transitions. [2019-11-20 00:52:31,409 INFO L711 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2019-11-20 00:52:31,409 INFO L591 BuchiCegarLoop]: Abstraction has 260 states and 376 transitions. [2019-11-20 00:52:31,409 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-20 00:52:31,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 260 states and 376 transitions. [2019-11-20 00:52:31,411 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2019-11-20 00:52:31,411 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:52:31,411 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:52:31,412 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2019-11-20 00:52:31,412 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 5, 4] [2019-11-20 00:52:31,412 INFO L794 eck$LassoCheckResult]: Stem: 5719#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~c~0;havoc main_~x~0;havoc main_~c~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := 1; 5724#L12-2 assume !!(main_~c~0 > 0); 5765#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5737#L12-2 assume !!(main_~c~0 > 0); 5733#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5715#L12-2 [2019-11-20 00:52:31,413 INFO L796 eck$LassoCheckResult]: Loop: 5715#L12-2 assume !!(main_~c~0 > 0); 5716#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5934#L12-2 assume !!(main_~c~0 > 0); 5861#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5859#L12-2 assume !!(main_~c~0 > 0); 5857#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5855#L12-2 assume !!(main_~c~0 > 0); 5852#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5841#L12-2 assume !!(main_~c~0 > 0); 5842#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5824#L12-2 assume !!(main_~c~0 > 0); 5825#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5816#L12-2 assume !!(main_~c~0 > 0); 5736#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5759#L12-2 assume !!(main_~c~0 > 0); 5738#L12 assume main_~x~0 > 100;main_~x~0 := main_~x~0 - 10;main_~c~0 := main_~c~0 - 1; 5735#L12-2 assume !!(main_~c~0 > 0); 5732#L12 assume !(main_~x~0 > 100);main_~x~0 := 11 + main_~x~0;main_~c~0 := 1 + main_~c~0; 5715#L12-2 [2019-11-20 00:52:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 7 times [2019-11-20 00:52:31,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:31,413 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602851639] [2019-11-20 00:52:31,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:31,419 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:31,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1476420572, now seen corresponding path program 7 times [2019-11-20 00:52:31,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:31,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686904504] [2019-11-20 00:52:31,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:31,432 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:31,432 INFO L82 PathProgramCache]: Analyzing trace with hash 939927885, now seen corresponding path program 10 times [2019-11-20 00:52:31,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:52:31,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99789870] [2019-11-20 00:52:31,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:52:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:52:31,447 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:52:31,642 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-11-20 00:52:31,659 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:31,659 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:31,659 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:31,659 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:31,659 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:52:31,659 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:31,659 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:31,659 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:31,659 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2019-11-20 00:52:31,659 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:31,660 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:31,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:31,674 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:31,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:31,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:31,731 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:31,731 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:31,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:52:31,743 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:31,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:52:31,755 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:31,813 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:52:31,815 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:52:31,815 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:52:31,815 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:52:31,815 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:52:31,815 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:52:31,816 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:31,816 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:52:31,816 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:52:31,816 INFO L133 ssoRankerPreferences]: Filename of dumped script: McCarthyIterative.c_Iteration12_Loop [2019-11-20 00:52:31,816 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:52:31,816 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:52:31,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:31,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:31,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:31,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:52:31,882 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:52:31,882 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/bin/uautomizer/z3 Starting monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:52:31,886 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:52:31,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:52:31,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:52:31,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:52:31,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:52:31,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:52:31,889 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:52:31,889 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:31,892 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:52:31,894 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:52:31,894 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_79e78fd8-b8a2-42ea-9f3f-9d8e31e5af69/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) [2019-11-20 00:52:31,898 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:52:31,898 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:52:31,898 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:52:31,898 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2019-11-20 00:52:31,900 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:52:31,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:31,918 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:31,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:31,929 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:52:31,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 00:52:31,994 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 [2019-11-20 00:52:31,994 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-11-20 00:52:32,008 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2019-11-20 00:52:32,008 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 [2019-11-20 00:52:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 00:52:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-20 00:52:32,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2019-11-20 00:52:32,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:32,009 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:32,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:32,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:32,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:32,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:52:32,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 00:52:32,092 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2019-11-20 00:52:32,092 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-11-20 00:52:32,107 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 276 states and 420 transitions. Complement of second has 5 states. [2019-11-20 00:52:32,108 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 [2019-11-20 00:52:32,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 00:52:32,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-11-20 00:52:32,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 18 letters. [2019-11-20 00:52:32,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:32,108 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:32,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:32,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:32,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:32,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:52:32,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 00:52:32,188 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2019-11-20 00:52:32,188 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-11-20 00:52:32,212 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 392 states and 547 transitions. Complement of second has 7 states. [2019-11-20 00:52:32,213 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 [2019-11-20 00:52:32,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 00:52:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-11-20 00:52:32,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 18 letters. [2019-11-20 00:52:32,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:32,214 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:52:32,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:52:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:32,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 00:52:32,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:52:32,249 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:52:32,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:52:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-20 00:52:32,306 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2019-11-20 00:52:32,306 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137 Second operand 8 states. [2019-11-20 00:52:32,353 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 260 states and 376 transitions. cyclomatic complexity: 137. Second operand 8 states. Result 511 states and 724 transitions. Complement of second has 12 states. [2019-11-20 00:52:32,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-11-20 00:52:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 00:52:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2019-11-20 00:52:32,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 18 letters. [2019-11-20 00:52:32,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:32,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 23 letters. Loop has 18 letters. [2019-11-20 00:52:32,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:32,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 36 letters. [2019-11-20 00:52:32,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:52:32,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 511 states and 724 transitions. [2019-11-20 00:52:32,359 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:52:32,359 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 511 states to 0 states and 0 transitions. [2019-11-20 00:52:32,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 00:52:32,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 00:52:32,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 00:52:32,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 00:52:32,360 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:52:32,360 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:52:32,360 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:52:32,360 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-11-20 00:52:32,360 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:52:32,360 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:52:32,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 00:52:32,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:52:32 BoogieIcfgContainer [2019-11-20 00:52:32,368 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 00:52:32,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:52:32,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:52:32,369 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:52:32,369 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:52:24" (3/4) ... [2019-11-20 00:52:32,372 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 00:52:32,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:52:32,374 INFO L168 Benchmark]: Toolchain (without parser) took 8752.48 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 339.2 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -261.9 MB). Peak memory consumption was 77.3 MB. Max. memory is 11.5 GB. [2019-11-20 00:52:32,374 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:52:32,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -200.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:52:32,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:52:32,375 INFO L168 Benchmark]: Boogie Preprocessor took 16.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:52:32,376 INFO L168 Benchmark]: RCFGBuilder took 224.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:52:32,376 INFO L168 Benchmark]: BuchiAutomizer took 8218.72 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 183.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -79.1 MB). Peak memory consumption was 104.4 MB. Max. memory is 11.5 GB. [2019-11-20 00:52:32,376 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:52:32,378 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 258.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -200.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 224.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 8218.72 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 183.5 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -79.1 MB). Peak memory consumption was 104.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.16 ms. Allocated memory is still 1.4 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 15 terminating modules (4 trivial, 4 deterministic, 7 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function c and consists of 3 locations. One deterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One deterministic module has affine ranking function c and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 211 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * x + 201 and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 5 locations. One nondeterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function x and consists of 9 locations. One nondeterministic module has affine ranking function c and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.1s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 4.6s. Construction of modules took 0.4s. Büchi inclusion checks took 2.8s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 14. Automata minimization 0.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 393 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 260 states and ocurred in iteration 11. Nontrivial modules had stage [4, 0, 3, 1, 3]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 105/148 HoareTripleCheckerStatistics: 154 SDtfs, 161 SDslu, 64 SDs, 0 SdLazy, 353 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax160 hnf98 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp96 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...