./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex08.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex08.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0f19c27ba74e1ebec32cb641e6640521812ace19 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Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:52:48,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:52:48,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:52:48,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:52:48,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:52:48,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:52:48,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:52:48,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:52:48,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:52:48,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:52:48,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:52:48,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:52:48,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:52:48,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:52:48,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:52:48,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:52:48,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:52:48,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:52:48,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:52:48,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:52:48,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:52:48,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:52:48,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:52:48,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:52:48,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:52:48,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:52:48,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:52:48,871 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:52:48,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:52:48,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:52:48,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:52:48,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:52:48,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:52:48,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:52:48,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:52:48,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:52:48,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:52:48,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:52:48,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:52:48,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:52:48,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:52:48,879 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:52:48,906 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:52:48,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:52:48,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:52:48,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:52:48,907 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:52:48,908 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:52:48,908 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:52:48,908 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:52:48,908 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:52:48,908 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:52:48,909 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:52:48,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:52:48,909 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:52:48,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:52:48,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:52:48,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:52:48,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:52:48,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:52:48,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:52:48,911 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:52:48,911 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:52:48,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:52:48,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:52:48,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:52:48,912 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:52:48,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:52:48,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:52:48,912 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:52:48,913 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:52:48,913 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f19c27ba74e1ebec32cb641e6640521812ace19 [2019-11-25 08:52:49,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:52:49,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:52:49,104 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:52:49,106 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:52:49,107 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:52:49,108 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex08.c [2019-11-25 08:52:49,163 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/data/98b4d1cd4/1af230ea51d940058a310f10740f21e2/FLAGbfc047565 [2019-11-25 08:52:49,588 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:52:49,589 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/sv-benchmarks/c/termination-restricted-15/Ex08.c [2019-11-25 08:52:49,594 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/data/98b4d1cd4/1af230ea51d940058a310f10740f21e2/FLAGbfc047565 [2019-11-25 08:52:50,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/data/98b4d1cd4/1af230ea51d940058a310f10740f21e2 [2019-11-25 08:52:50,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:52:50,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:52:50,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:50,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:52:50,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:52:50,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445e5207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50, skipping insertion in model container [2019-11-25 08:52:50,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:52:50,071 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:52:50,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:50,254 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:52:50,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:52:50,367 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:52:50,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50 WrapperNode [2019-11-25 08:52:50,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:52:50,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:50,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:52:50,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:52:50,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:52:50,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:52:50,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:52:50,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:52:50,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... [2019-11-25 08:52:50,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:52:50,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:52:50,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:52:50,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:52:50,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:52:50,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:52:50,614 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:52:50,614 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:52:50,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:50 BoogieIcfgContainer [2019-11-25 08:52:50,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:52:50,616 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:52:50,616 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:52:50,621 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:52:50,622 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:50,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:52:50" (1/3) ... [2019-11-25 08:52:50,624 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@682e20de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:50, skipping insertion in model container [2019-11-25 08:52:50,625 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:50,625 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:52:50" (2/3) ... [2019-11-25 08:52:50,626 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@682e20de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:52:50, skipping insertion in model container [2019-11-25 08:52:50,626 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:52:50,626 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:50" (3/3) ... [2019-11-25 08:52:50,628 INFO L371 chiAutomizerObserver]: Analyzing ICFG Ex08.c [2019-11-25 08:52:50,685 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:52:50,685 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:52:50,685 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:52:50,685 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:52:50,686 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:52:50,686 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:52:50,686 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:52:50,687 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:52:50,700 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-25 08:52:50,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:52:50,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:50,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:50,727 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:52:50,728 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:50,728 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:52:50,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-25 08:52:50,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-25 08:52:50,730 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:50,730 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:50,730 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:52:50,731 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:50,738 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5#L18-1true [2019-11-25 08:52:50,738 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(main_~i~0 > 0); 6#L12true assume 1 == main_~i~0;main_~up~0 := 1; 3#L12-2true assume 10 == main_~i~0;main_~up~0 := 0; 9#L15-1true assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5#L18-1true [2019-11-25 08:52:50,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:50,744 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-25 08:52:50,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:50,752 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015072206] [2019-11-25 08:52:50,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:50,845 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:50,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2019-11-25 08:52:50,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:50,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059912562] [2019-11-25 08:52:50,847 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:50,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059912562] [2019-11-25 08:52:50,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:50,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:52:50,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162807509] [2019-11-25 08:52:50,900 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:50,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:50,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:52:50,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:52:50,916 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-25 08:52:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:50,998 INFO L93 Difference]: Finished difference Result 13 states and 19 transitions. [2019-11-25 08:52:50,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:52:51,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 19 transitions. [2019-11-25 08:52:51,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:52:51,005 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 14 transitions. [2019-11-25 08:52:51,006 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-25 08:52:51,007 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-25 08:52:51,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 14 transitions. [2019-11-25 08:52:51,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:51,008 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:52:51,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 14 transitions. [2019-11-25 08:52:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-25 08:52:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:52:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2019-11-25 08:52:51,041 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:52:51,041 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 14 transitions. [2019-11-25 08:52:51,041 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:52:51,041 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 14 transitions. [2019-11-25 08:52:51,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-25 08:52:51,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:51,043 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:51,043 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:52:51,043 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:51,044 INFO L794 eck$LassoCheckResult]: Stem: 33#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 34#L18-1 [2019-11-25 08:52:51,044 INFO L796 eck$LassoCheckResult]: Loop: 34#L18-1 assume !!(main_~i~0 > 0); 39#L12 assume !(1 == main_~i~0); 37#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 38#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 34#L18-1 [2019-11-25 08:52:51,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,044 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-25 08:52:51,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:51,045 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651688720] [2019-11-25 08:52:51,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,053 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:51,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1236460, now seen corresponding path program 1 times [2019-11-25 08:52:51,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:51,054 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883818288] [2019-11-25 08:52:51,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:51,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:51,069 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883818288] [2019-11-25 08:52:51,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:51,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:52:51,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319078396] [2019-11-25 08:52:51,070 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:51,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:51,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:52:51,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:52:51,071 INFO L87 Difference]: Start difference. First operand 9 states and 14 transitions. cyclomatic complexity: 6 Second operand 3 states. [2019-11-25 08:52:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:51,085 INFO L93 Difference]: Finished difference Result 13 states and 20 transitions. [2019-11-25 08:52:51,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:52:51,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2019-11-25 08:52:51,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:52:51,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 20 transitions. [2019-11-25 08:52:51,087 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-25 08:52:51,087 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-25 08:52:51,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 20 transitions. [2019-11-25 08:52:51,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:52:51,088 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2019-11-25 08:52:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 20 transitions. [2019-11-25 08:52:51,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-25 08:52:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:52:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 20 transitions. [2019-11-25 08:52:51,090 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2019-11-25 08:52:51,090 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 20 transitions. [2019-11-25 08:52:51,090 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-25 08:52:51,090 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 20 transitions. [2019-11-25 08:52:51,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:52:51,091 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:51,091 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:51,092 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-25 08:52:51,092 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:51,092 INFO L794 eck$LassoCheckResult]: Stem: 61#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 62#L18-1 [2019-11-25 08:52:51,092 INFO L796 eck$LassoCheckResult]: Loop: 62#L18-1 assume !!(main_~i~0 > 0); 71#L12 assume !(1 == main_~i~0); 70#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 66#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 62#L18-1 [2019-11-25 08:52:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,092 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-11-25 08:52:51,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:51,093 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589325210] [2019-11-25 08:52:51,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,098 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:51,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1236462, now seen corresponding path program 1 times [2019-11-25 08:52:51,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:51,099 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377554359] [2019-11-25 08:52:51,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,110 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:51,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,111 INFO L82 PathProgramCache]: Analyzing trace with hash 29865613, now seen corresponding path program 1 times [2019-11-25 08:52:51,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:51,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631059412] [2019-11-25 08:52:51,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,132 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:51,195 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:51,196 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:51,196 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:51,196 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:51,196 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:51,197 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:51,197 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:51,197 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:51,197 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2019-11-25 08:52:51,197 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:51,197 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:51,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,349 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:51,350 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:51,362 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:51,362 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:51,373 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:51,377 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:51,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:51,389 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:51,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:51,398 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:51,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:51,410 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:51,418 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:51,419 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:51,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:51,439 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:51,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:51,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:51,461 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:51,464 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:51,464 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:51,464 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:51,464 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:51,465 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:51,465 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:51,465 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:51,465 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:51,465 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration3_Loop [2019-11-25 08:52:51,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:51,465 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:51,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,552 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:51,555 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:51,560 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:51,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:51,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:51,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:51,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:51,568 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:51,568 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:52:51,574 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:51,598 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:51,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:51,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:51,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:51,601 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:51,607 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:51,607 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:51,614 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:51,632 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:51,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:51,635 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:51,635 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:51,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:51,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:51,638 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:51,638 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:51,642 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:51,654 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:51,656 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:51,656 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:51,656 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:51,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:51,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:51,660 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:51,660 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:51,665 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:51,670 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:51,670 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:51,678 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:51,678 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:51,678 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:51,679 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:52:51,684 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:51,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:51,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:51,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:51,730 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:51,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:51,751 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 [2019-11-25 08:52:51,752 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-11-25 08:52:51,795 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 20 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 28 states and 43 transitions. Complement of second has 5 states. [2019-11-25 08:52:51,797 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 [2019-11-25 08:52:51,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:52:51,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-11-25 08:52:51,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-25 08:52:51,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:51,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:52:51,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:51,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 1 letters. Loop has 8 letters. [2019-11-25 08:52:51,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:51,800 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2019-11-25 08:52:51,802 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:52:51,803 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 40 transitions. [2019-11-25 08:52:51,803 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-25 08:52:51,803 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2019-11-25 08:52:51,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 40 transitions. [2019-11-25 08:52:51,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:51,806 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2019-11-25 08:52:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 40 transitions. [2019-11-25 08:52:51,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-25 08:52:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-25 08:52:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2019-11-25 08:52:51,813 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2019-11-25 08:52:51,813 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2019-11-25 08:52:51,813 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-25 08:52:51,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 40 transitions. [2019-11-25 08:52:51,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-25 08:52:51,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:51,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:51,817 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:52:51,817 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:51,818 INFO L794 eck$LassoCheckResult]: Stem: 140#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 141#L18-1 assume !!(main_~i~0 > 0); 152#L12 assume 1 == main_~i~0;main_~up~0 := 1; 159#L12-2 assume !(10 == main_~i~0); 154#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 155#L18-1 [2019-11-25 08:52:51,818 INFO L796 eck$LassoCheckResult]: Loop: 155#L18-1 assume !!(main_~i~0 > 0); 161#L12 assume 1 == main_~i~0;main_~up~0 := 1; 136#L12-2 assume !(10 == main_~i~0); 137#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 155#L18-1 [2019-11-25 08:52:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 1 times [2019-11-25 08:52:51,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:51,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871630502] [2019-11-25 08:52:51,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,839 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:51,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1234600, now seen corresponding path program 1 times [2019-11-25 08:52:51,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:51,841 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392234216] [2019-11-25 08:52:51,841 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:51,852 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:51,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:51,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1816490734, now seen corresponding path program 2 times [2019-11-25 08:52:51,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:51,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673201761] [2019-11-25 08:52:51,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:51,876 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673201761] [2019-11-25 08:52:51,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:51,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-25 08:52:51,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26356111] [2019-11-25 08:52:51,902 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:51,902 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:51,902 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:51,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:51,902 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:51,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:51,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:51,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:51,903 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2019-11-25 08:52:51,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:51,903 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:51,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:51,986 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:51,986 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:51,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:51,999 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,004 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,004 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:52,029 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,030 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:52,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,039 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,044 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:52,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:52,060 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:52,065 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:52,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:52,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:52,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:52,066 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:52,066 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,066 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:52,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:52,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration4_Loop [2019-11-25 08:52:52,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:52,067 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:52,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,085 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,138 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:52,139 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:52,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:52,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:52,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:52,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:52,157 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:52,157 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,162 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:52,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:52,179 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:52,179 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:52,179 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:52,182 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:52,183 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,187 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:52,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:52,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:52,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:52,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:52,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:52,199 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:52,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:52,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:52,204 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:52,204 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,214 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:52,214 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:52,214 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:52,214 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2019-11-25 08:52:52,217 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:52,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:52,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:52,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:52,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:52,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:52,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:52,270 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 [2019-11-25 08:52:52,271 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17 Second operand 4 states. [2019-11-25 08:52:52,313 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17. Second operand 4 states. Result 43 states and 64 transitions. Complement of second has 7 states. [2019-11-25 08:52:52,314 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 [2019-11-25 08:52:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:52:52,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-11-25 08:52:52,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:52:52,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:52,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-25 08:52:52,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:52,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-25 08:52:52,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:52,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 64 transitions. [2019-11-25 08:52:52,318 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2019-11-25 08:52:52,320 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 42 states and 63 transitions. [2019-11-25 08:52:52,320 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-11-25 08:52:52,320 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2019-11-25 08:52:52,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 63 transitions. [2019-11-25 08:52:52,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:52,321 INFO L688 BuchiCegarLoop]: Abstraction has 42 states and 63 transitions. [2019-11-25 08:52:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 63 transitions. [2019-11-25 08:52:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2019-11-25 08:52:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-25 08:52:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2019-11-25 08:52:52,326 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2019-11-25 08:52:52,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:52,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:52:52,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:52:52,327 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2019-11-25 08:52:52,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:52,353 INFO L93 Difference]: Finished difference Result 45 states and 64 transitions. [2019-11-25 08:52:52,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:52:52,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 64 transitions. [2019-11-25 08:52:52,356 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2019-11-25 08:52:52,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 41 states and 59 transitions. [2019-11-25 08:52:52,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2019-11-25 08:52:52,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2019-11-25 08:52:52,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 59 transitions. [2019-11-25 08:52:52,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:52,357 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 59 transitions. [2019-11-25 08:52:52,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 59 transitions. [2019-11-25 08:52:52,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2019-11-25 08:52:52,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-25 08:52:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2019-11-25 08:52:52,361 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2019-11-25 08:52:52,361 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 42 transitions. [2019-11-25 08:52:52,361 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-25 08:52:52,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 42 transitions. [2019-11-25 08:52:52,362 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-11-25 08:52:52,363 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:52,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:52,363 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-25 08:52:52,363 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:52,364 INFO L794 eck$LassoCheckResult]: Stem: 347#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 348#L18-1 assume !!(main_~i~0 > 0); 352#L12 assume 1 == main_~i~0;main_~up~0 := 1; 343#L12-2 assume !(10 == main_~i~0); 344#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 363#L18-1 [2019-11-25 08:52:52,364 INFO L796 eck$LassoCheckResult]: Loop: 363#L18-1 assume !!(main_~i~0 > 0); 354#L12 assume !(1 == main_~i~0); 355#L12-2 assume !(10 == main_~i~0); 364#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 363#L18-1 [2019-11-25 08:52:52,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:52,364 INFO L82 PathProgramCache]: Analyzing trace with hash 29863751, now seen corresponding path program 3 times [2019-11-25 08:52:52,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:52,365 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198087295] [2019-11-25 08:52:52,365 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:52,375 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:52,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:52,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1236522, now seen corresponding path program 1 times [2019-11-25 08:52:52,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:52,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754599256] [2019-11-25 08:52:52,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:52,383 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:52,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1816492656, now seen corresponding path program 1 times [2019-11-25 08:52:52,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:52,384 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598418612] [2019-11-25 08:52:52,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:52,393 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:52,415 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:52,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:52,415 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:52,415 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:52,415 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:52,415 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,415 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:52,415 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:52,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Loop [2019-11-25 08:52:52,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:52,416 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:52,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,551 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:52,551 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,567 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,567 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,572 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,572 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,587 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 [2019-11-25 08:52:52,591 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,591 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,601 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 [2019-11-25 08:52:52,605 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,606 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,612 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,612 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,622 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:52,622 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 [2019-11-25 08:52:52,646 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,646 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~i~0=15} Honda state: {ULTIMATE.start_main_~i~0=15} Generalized eigenvectors: [{ULTIMATE.start_main_~i~0=1}, {ULTIMATE.start_main_~i~0=0}, {ULTIMATE.start_main_~i~0=0}] Lambdas: [1, 9, 11] Nus: [0, 0] [2019-11-25 08:52:52,694 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:52,694 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:52,694 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:52,694 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:52,694 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:52,694 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,695 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:52,695 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:52,695 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2019-11-25 08:52:52,695 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:52,695 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:52,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,706 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,867 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:52,867 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,878 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,878 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,886 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,886 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,893 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,897 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,897 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:52,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,904 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,907 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,908 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,914 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,918 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:52,918 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_6=0} Honda state: {v_rep~unnamed0~0~false_6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,924 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:52,924 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:52,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:52,936 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 [2019-11-25 08:52:52,946 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:52,948 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:52,948 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:52,948 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:52,948 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:52,948 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:52,948 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:52,949 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:52,949 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:52,949 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration5_Lasso [2019-11-25 08:52:52,949 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:52,949 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:52,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:52,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,112 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:53,112 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,116 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:53,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:53,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:53,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:53,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,120 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,126 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:53,128 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,128 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:53,128 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:53,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:53,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,135 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,143 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:53,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,144 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:53,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,147 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:53,147 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,153 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,161 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:53,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:53,163 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,167 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:53,167 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,171 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,177 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:53,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,180 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:52:53,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,195 INFO L401 nArgumentSynthesizer]: We have 16 Motzkin's Theorem applications. [2019-11-25 08:52:53,195 INFO L402 nArgumentSynthesizer]: A total of 4 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:53,241 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-11-25 08:52:53,241 INFO L444 ModelExtractionUtils]: 1 out of 11 variables were initially zero. Simplification set additionally 5 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,245 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,251 INFO L438 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2019-11-25 08:52:53,252 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:53,252 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 21 Supporting invariants [-1*ULTIMATE.start_main_~i~0 + 10 >= 0] [2019-11-25 08:52:53,256 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-11-25 08:52:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:53,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:53,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:53,320 WARN L253 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:52:53,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:53,336 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2019-11-25 08:52:53,337 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 17 Second operand 5 states. [2019-11-25 08:52:53,424 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 42 transitions. cyclomatic complexity: 17. Second operand 5 states. Result 38 states and 55 transitions. Complement of second has 8 states. [2019-11-25 08:52:53,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:53,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-25 08:52:53,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-11-25 08:52:53,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-25 08:52:53,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:53,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-25 08:52:53,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:53,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-25 08:52:53,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:53,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 55 transitions. [2019-11-25 08:52:53,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-11-25 08:52:53,428 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 37 states and 54 transitions. [2019-11-25 08:52:53,428 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-25 08:52:53,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-11-25 08:52:53,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 54 transitions. [2019-11-25 08:52:53,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:53,428 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 54 transitions. [2019-11-25 08:52:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 54 transitions. [2019-11-25 08:52:53,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-25 08:52:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-25 08:52:53,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2019-11-25 08:52:53,431 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-11-25 08:52:53,432 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2019-11-25 08:52:53,432 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-25 08:52:53,432 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 53 transitions. [2019-11-25 08:52:53,432 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-11-25 08:52:53,433 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:53,433 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:53,433 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:52:53,433 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:53,433 INFO L794 eck$LassoCheckResult]: Stem: 476#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 477#L18-1 assume !!(main_~i~0 > 0); 481#L12 assume 1 == main_~i~0;main_~up~0 := 1; 493#L12-2 assume !(10 == main_~i~0); 492#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 491#L18-1 assume !!(main_~i~0 > 0); 483#L12 assume !(1 == main_~i~0); 484#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 473#L15-1 [2019-11-25 08:52:53,434 INFO L796 eck$LassoCheckResult]: Loop: 473#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 478#L18-1 assume !!(main_~i~0 > 0); 479#L12 assume !(1 == main_~i~0); 472#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 473#L15-1 [2019-11-25 08:52:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:53,434 INFO L82 PathProgramCache]: Analyzing trace with hash 612785863, now seen corresponding path program 1 times [2019-11-25 08:52:53,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:53,434 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752305618] [2019-11-25 08:52:53,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:53,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:53,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752305618] [2019-11-25 08:52:53,463 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196878000] [2019-11-25 08:52:53,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:53,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:52:53,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:53,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:53,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-25 08:52:53,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296894940] [2019-11-25 08:52:53,491 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:53,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1737972, now seen corresponding path program 2 times [2019-11-25 08:52:53,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:53,492 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745054648] [2019-11-25 08:52:53,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:53,498 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:53,528 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:53,528 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:53,528 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:53,528 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:53,528 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:53,528 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,529 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:53,529 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:53,529 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2019-11-25 08:52:53,529 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:53,529 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:53,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,536 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,544 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,624 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:53,624 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:53,629 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 [2019-11-25 08:52:53,635 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:53,635 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:53,646 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 [2019-11-25 08:52:53,650 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:53,650 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_8=1} Honda state: {v_rep~unnamed0~0~true_8=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:53,655 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:53,663 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,758 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:53,760 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:53,760 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:53,760 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:53,760 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:53,760 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:53,760 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,760 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:53,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:53,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration6_Loop [2019-11-25 08:52:53,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:53,760 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:53,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:53,851 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:53,851 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,860 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:53,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:53,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,862 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-25 08:52:53,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,864 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-25 08:52:53,864 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 [2019-11-25 08:52:53,866 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,886 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 [2019-11-25 08:52:53,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:53,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,889 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:53,889 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:53,903 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:53,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:53,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,907 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:53,907 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,912 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,918 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 [2019-11-25 08:52:53,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:53,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:53,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:53,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:53,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:53,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:53,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,924 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:53,926 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:52:53,926 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:53,930 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:53,931 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:53,931 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:53,931 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:52:53,933 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:53,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:53,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:53,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:53,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:53,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:53,992 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 [2019-11-25 08:52:53,992 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 53 transitions. cyclomatic complexity: 21 Second operand 4 states. [2019-11-25 08:52:54,039 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 53 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 91 states and 135 transitions. Complement of second has 7 states. [2019-11-25 08:52:54,041 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 [2019-11-25 08:52:54,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-25 08:52:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-25 08:52:54,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-25 08:52:54,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:54,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2019-11-25 08:52:54,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:54,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2019-11-25 08:52:54,043 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:54,043 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 91 states and 135 transitions. [2019-11-25 08:52:54,046 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 24 [2019-11-25 08:52:54,049 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 91 states to 78 states and 115 transitions. [2019-11-25 08:52:54,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2019-11-25 08:52:54,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2019-11-25 08:52:54,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 115 transitions. [2019-11-25 08:52:54,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:54,052 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 115 transitions. [2019-11-25 08:52:54,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 115 transitions. [2019-11-25 08:52:54,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2019-11-25 08:52:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-25 08:52:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 114 transitions. [2019-11-25 08:52:54,068 INFO L711 BuchiCegarLoop]: Abstraction has 77 states and 114 transitions. [2019-11-25 08:52:54,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:54,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:52:54,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:52:54,070 INFO L87 Difference]: Start difference. First operand 77 states and 114 transitions. Second operand 4 states. [2019-11-25 08:52:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:54,099 INFO L93 Difference]: Finished difference Result 105 states and 148 transitions. [2019-11-25 08:52:54,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:52:54,100 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 148 transitions. [2019-11-25 08:52:54,102 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2019-11-25 08:52:54,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 105 states and 148 transitions. [2019-11-25 08:52:54,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 67 [2019-11-25 08:52:54,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2019-11-25 08:52:54,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 148 transitions. [2019-11-25 08:52:54,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:54,104 INFO L688 BuchiCegarLoop]: Abstraction has 105 states and 148 transitions. [2019-11-25 08:52:54,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states and 148 transitions. [2019-11-25 08:52:54,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2019-11-25 08:52:54,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-25 08:52:54,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 130 transitions. [2019-11-25 08:52:54,118 INFO L711 BuchiCegarLoop]: Abstraction has 91 states and 130 transitions. [2019-11-25 08:52:54,118 INFO L591 BuchiCegarLoop]: Abstraction has 91 states and 130 transitions. [2019-11-25 08:52:54,118 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-25 08:52:54,118 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 91 states and 130 transitions. [2019-11-25 08:52:54,119 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2019-11-25 08:52:54,122 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:54,122 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:54,122 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-25 08:52:54,122 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-25 08:52:54,123 INFO L794 eck$LassoCheckResult]: Stem: 867#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 868#L18-1 assume !!(main_~i~0 > 0); 905#L12 assume 1 == main_~i~0;main_~up~0 := 1; 904#L12-2 assume !(10 == main_~i~0); 903#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 901#L18-1 assume !!(main_~i~0 > 0); 902#L12 assume !(1 == main_~i~0); 914#L12-2 assume !(10 == main_~i~0); 912#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 890#L18-1 [2019-11-25 08:52:54,123 INFO L796 eck$LassoCheckResult]: Loop: 890#L18-1 assume !!(main_~i~0 > 0); 908#L12 assume 1 == main_~i~0;main_~up~0 := 1; 899#L12-2 assume !(10 == main_~i~0); 897#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 890#L18-1 [2019-11-25 08:52:54,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1816492658, now seen corresponding path program 1 times [2019-11-25 08:52:54,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543264988] [2019-11-25 08:52:54,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-25 08:52:54,152 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543264988] [2019-11-25 08:52:54,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:54,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:52:54,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889091552] [2019-11-25 08:52:54,153 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:54,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2019-11-25 08:52:54,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,154 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946281] [2019-11-25 08:52:54,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:54,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946281] [2019-11-25 08:52:54,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:54,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:52:54,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579958837] [2019-11-25 08:52:54,164 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:54,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:54,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:52:54,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:52:54,165 INFO L87 Difference]: Start difference. First operand 91 states and 130 transitions. cyclomatic complexity: 49 Second operand 3 states. [2019-11-25 08:52:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:54,173 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2019-11-25 08:52:54,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:52:54,174 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 77 transitions. [2019-11-25 08:52:54,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2019-11-25 08:52:54,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 51 states and 63 transitions. [2019-11-25 08:52:54,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-11-25 08:52:54,176 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2019-11-25 08:52:54,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 63 transitions. [2019-11-25 08:52:54,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:54,176 INFO L688 BuchiCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-11-25 08:52:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 63 transitions. [2019-11-25 08:52:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2019-11-25 08:52:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-25 08:52:54,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2019-11-25 08:52:54,180 INFO L711 BuchiCegarLoop]: Abstraction has 48 states and 60 transitions. [2019-11-25 08:52:54,180 INFO L591 BuchiCegarLoop]: Abstraction has 48 states and 60 transitions. [2019-11-25 08:52:54,180 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-25 08:52:54,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 60 transitions. [2019-11-25 08:52:54,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2019-11-25 08:52:54,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:54,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:54,181 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1] [2019-11-25 08:52:54,181 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 1, 1, 1] [2019-11-25 08:52:54,182 INFO L794 eck$LassoCheckResult]: Stem: 1030#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1031#L18-1 assume !!(main_~i~0 > 0); 1061#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1059#L12-2 assume !(10 == main_~i~0); 1057#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1055#L18-1 assume !!(main_~i~0 > 0); 1048#L12 assume !(1 == main_~i~0); 1051#L12-2 assume !(10 == main_~i~0); 1049#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1047#L18-1 assume !!(main_~i~0 > 0); 1046#L12 assume !(1 == main_~i~0); 1045#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1044#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1034#L18-1 assume !!(main_~i~0 > 0); 1035#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1026#L12-2 [2019-11-25 08:52:54,182 INFO L796 eck$LassoCheckResult]: Loop: 1026#L12-2 assume !(10 == main_~i~0); 1027#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1068#L18-1 assume !!(main_~i~0 > 0); 1036#L12 assume !(1 == main_~i~0); 1037#L12-2 assume !(10 == main_~i~0); 1073#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1032#L18-1 assume !!(main_~i~0 > 0); 1033#L12 assume !(1 == main_~i~0); 1072#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1040#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1041#L18-1 assume !!(main_~i~0 > 0); 1071#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1026#L12-2 [2019-11-25 08:52:54,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1399375584, now seen corresponding path program 1 times [2019-11-25 08:52:54,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822086948] [2019-11-25 08:52:54,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:52:54,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822086948] [2019-11-25 08:52:54,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:54,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:52:54,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126162833] [2019-11-25 08:52:54,205 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:54,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,206 INFO L82 PathProgramCache]: Analyzing trace with hash 388845694, now seen corresponding path program 1 times [2019-11-25 08:52:54,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,206 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769821184] [2019-11-25 08:52:54,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:54,224 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769821184] [2019-11-25 08:52:54,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:52:54,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-25 08:52:54,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048531760] [2019-11-25 08:52:54,225 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:54,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:54,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:52:54,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:52:54,226 INFO L87 Difference]: Start difference. First operand 48 states and 60 transitions. cyclomatic complexity: 18 Second operand 4 states. [2019-11-25 08:52:54,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:54,254 INFO L93 Difference]: Finished difference Result 64 states and 79 transitions. [2019-11-25 08:52:54,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:52:54,255 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 79 transitions. [2019-11-25 08:52:54,256 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2019-11-25 08:52:54,257 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 63 states and 78 transitions. [2019-11-25 08:52:54,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-25 08:52:54,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-25 08:52:54,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 78 transitions. [2019-11-25 08:52:54,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:54,258 INFO L688 BuchiCegarLoop]: Abstraction has 63 states and 78 transitions. [2019-11-25 08:52:54,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 78 transitions. [2019-11-25 08:52:54,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2019-11-25 08:52:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-25 08:52:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2019-11-25 08:52:54,261 INFO L711 BuchiCegarLoop]: Abstraction has 56 states and 68 transitions. [2019-11-25 08:52:54,261 INFO L591 BuchiCegarLoop]: Abstraction has 56 states and 68 transitions. [2019-11-25 08:52:54,261 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-25 08:52:54,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 68 transitions. [2019-11-25 08:52:54,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-25 08:52:54,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:54,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:54,263 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 3, 3, 2, 2, 2, 1, 1] [2019-11-25 08:52:54,263 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 1, 1] [2019-11-25 08:52:54,264 INFO L794 eck$LassoCheckResult]: Stem: 1152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1153#L18-1 assume !!(main_~i~0 > 0); 1182#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1180#L12-2 assume !(10 == main_~i~0); 1178#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1176#L18-1 assume !!(main_~i~0 > 0); 1169#L12 assume !(1 == main_~i~0); 1172#L12-2 assume !(10 == main_~i~0); 1170#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1168#L18-1 assume !!(main_~i~0 > 0); 1167#L12 assume !(1 == main_~i~0); 1166#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1160#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1161#L18-1 assume !!(main_~i~0 > 0); 1159#L12 assume !(1 == main_~i~0); 1149#L12-2 assume !(10 == main_~i~0); 1151#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1156#L18-1 assume !!(main_~i~0 > 0); 1157#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1191#L12-2 [2019-11-25 08:52:54,264 INFO L796 eck$LassoCheckResult]: Loop: 1191#L12-2 assume !(10 == main_~i~0); 1162#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1154#L18-1 assume !!(main_~i~0 > 0); 1155#L12 assume !(1 == main_~i~0); 1158#L12-2 assume !(10 == main_~i~0); 1197#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1200#L18-1 assume !!(main_~i~0 > 0); 1199#L12 assume !(1 == main_~i~0); 1196#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1148#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1163#L18-1 assume !!(main_~i~0 > 0); 1194#L12 assume !(1 == main_~i~0); 1195#L12-2 assume !(10 == main_~i~0); 1198#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1202#L18-1 assume !!(main_~i~0 > 0); 1201#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1191#L12-2 [2019-11-25 08:52:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1376811083, now seen corresponding path program 2 times [2019-11-25 08:52:54,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027427357] [2019-11-25 08:52:54,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:54,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027427357] [2019-11-25 08:52:54,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347425821] [2019-11-25 08:52:54,325 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:54,352 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:52:54,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:54,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:54,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-25 08:52:54,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:54,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2019-11-25 08:52:54,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200507760] [2019-11-25 08:52:54,359 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,360 INFO L82 PathProgramCache]: Analyzing trace with hash 656081641, now seen corresponding path program 2 times [2019-11-25 08:52:54,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,360 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232785266] [2019-11-25 08:52:54,360 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,389 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:54,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232785266] [2019-11-25 08:52:54,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991736101] [2019-11-25 08:52:54,389 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:54,411 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:52:54,411 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:54,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:54,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:54,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:54,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-25 08:52:54,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463734609] [2019-11-25 08:52:54,415 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:54,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:54,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:52:54,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:52:54,416 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. cyclomatic complexity: 18 Second operand 5 states. [2019-11-25 08:52:54,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:54,450 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-11-25 08:52:54,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:52:54,452 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 94 transitions. [2019-11-25 08:52:54,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2019-11-25 08:52:54,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 75 states and 93 transitions. [2019-11-25 08:52:54,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2019-11-25 08:52:54,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-11-25 08:52:54,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 93 transitions. [2019-11-25 08:52:54,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:54,454 INFO L688 BuchiCegarLoop]: Abstraction has 75 states and 93 transitions. [2019-11-25 08:52:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states and 93 transitions. [2019-11-25 08:52:54,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2019-11-25 08:52:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-25 08:52:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2019-11-25 08:52:54,459 INFO L711 BuchiCegarLoop]: Abstraction has 68 states and 83 transitions. [2019-11-25 08:52:54,459 INFO L591 BuchiCegarLoop]: Abstraction has 68 states and 83 transitions. [2019-11-25 08:52:54,459 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-25 08:52:54,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 83 transitions. [2019-11-25 08:52:54,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2019-11-25 08:52:54,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:54,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:54,461 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [6, 4, 4, 3, 2, 2, 1, 1] [2019-11-25 08:52:54,461 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2019-11-25 08:52:54,461 INFO L794 eck$LassoCheckResult]: Stem: 1397#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1398#L18-1 assume !!(main_~i~0 > 0); 1422#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1421#L12-2 assume !(10 == main_~i~0); 1420#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1419#L18-1 assume !!(main_~i~0 > 0); 1416#L12 assume !(1 == main_~i~0); 1418#L12-2 assume !(10 == main_~i~0); 1417#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1415#L18-1 assume !!(main_~i~0 > 0); 1414#L12 assume !(1 == main_~i~0); 1413#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1406#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1407#L18-1 assume !!(main_~i~0 > 0); 1457#L12 assume !(1 == main_~i~0); 1456#L12-2 assume !(10 == main_~i~0); 1455#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1454#L18-1 assume !!(main_~i~0 > 0); 1453#L12 assume !(1 == main_~i~0); 1433#L12-2 assume !(10 == main_~i~0); 1439#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1438#L18-1 assume !!(main_~i~0 > 0); 1432#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1431#L12-2 [2019-11-25 08:52:54,461 INFO L796 eck$LassoCheckResult]: Loop: 1431#L12-2 assume !(10 == main_~i~0); 1443#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1440#L18-1 assume !!(main_~i~0 > 0); 1434#L12 assume !(1 == main_~i~0); 1435#L12-2 assume !(10 == main_~i~0); 1428#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1437#L18-1 assume !!(main_~i~0 > 0); 1430#L12 assume !(1 == main_~i~0); 1427#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1393#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1449#L18-1 assume !!(main_~i~0 > 0); 1450#L12 assume !(1 == main_~i~0); 1451#L12-2 assume !(10 == main_~i~0); 1410#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1411#L18-1 assume !!(main_~i~0 > 0); 1403#L12 assume !(1 == main_~i~0); 1404#L12-2 assume !(10 == main_~i~0); 1429#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1399#L18-1 assume !!(main_~i~0 > 0); 1400#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1431#L12-2 [2019-11-25 08:52:54,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1767603254, now seen corresponding path program 3 times [2019-11-25 08:52:54,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,462 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501137345] [2019-11-25 08:52:54,462 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:54,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501137345] [2019-11-25 08:52:54,532 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749350659] [2019-11-25 08:52:54,532 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:54,554 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-25 08:52:54,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:54,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:52:54,556 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:52:54,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:54,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 12 [2019-11-25 08:52:54,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007274863] [2019-11-25 08:52:54,598 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:54,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1254328276, now seen corresponding path program 3 times [2019-11-25 08:52:54,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164329636] [2019-11-25 08:52:54,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:54,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164329636] [2019-11-25 08:52:54,633 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302418888] [2019-11-25 08:52:54,633 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:54,654 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-25 08:52:54,655 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:54,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:52:54,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:54,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:54,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-25 08:52:54,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567878872] [2019-11-25 08:52:54,661 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:54,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:54,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:52:54,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:52:54,661 INFO L87 Difference]: Start difference. First operand 68 states and 83 transitions. cyclomatic complexity: 21 Second operand 6 states. [2019-11-25 08:52:54,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:54,711 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2019-11-25 08:52:54,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:52:54,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 109 transitions. [2019-11-25 08:52:54,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2019-11-25 08:52:54,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 87 states and 108 transitions. [2019-11-25 08:52:54,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-25 08:52:54,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2019-11-25 08:52:54,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 108 transitions. [2019-11-25 08:52:54,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:54,714 INFO L688 BuchiCegarLoop]: Abstraction has 87 states and 108 transitions. [2019-11-25 08:52:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states and 108 transitions. [2019-11-25 08:52:54,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2019-11-25 08:52:54,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-25 08:52:54,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2019-11-25 08:52:54,718 INFO L711 BuchiCegarLoop]: Abstraction has 80 states and 98 transitions. [2019-11-25 08:52:54,718 INFO L591 BuchiCegarLoop]: Abstraction has 80 states and 98 transitions. [2019-11-25 08:52:54,718 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-25 08:52:54,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states and 98 transitions. [2019-11-25 08:52:54,719 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2019-11-25 08:52:54,719 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:54,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:54,720 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1] [2019-11-25 08:52:54,721 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2019-11-25 08:52:54,721 INFO L794 eck$LassoCheckResult]: Stem: 1696#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1697#L18-1 assume !!(main_~i~0 > 0); 1720#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1719#L12-2 assume !(10 == main_~i~0); 1718#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1717#L18-1 assume !!(main_~i~0 > 0); 1714#L12 assume !(1 == main_~i~0); 1716#L12-2 assume !(10 == main_~i~0); 1715#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1713#L18-1 assume !!(main_~i~0 > 0); 1712#L12 assume !(1 == main_~i~0); 1711#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1704#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1705#L18-1 assume !!(main_~i~0 > 0); 1751#L12 assume !(1 == main_~i~0); 1750#L12-2 assume !(10 == main_~i~0); 1749#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1748#L18-1 assume !!(main_~i~0 > 0); 1747#L12 assume !(1 == main_~i~0); 1746#L12-2 assume !(10 == main_~i~0); 1745#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1744#L18-1 assume !!(main_~i~0 > 0); 1743#L12 assume !(1 == main_~i~0); 1728#L12-2 assume !(10 == main_~i~0); 1732#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1731#L18-1 assume !!(main_~i~0 > 0); 1727#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1709#L12-2 [2019-11-25 08:52:54,721 INFO L796 eck$LassoCheckResult]: Loop: 1709#L12-2 assume !(10 == main_~i~0); 1710#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1762#L18-1 assume !!(main_~i~0 > 0); 1729#L12 assume !(1 == main_~i~0); 1730#L12-2 assume !(10 == main_~i~0); 1741#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 1738#L18-1 assume !!(main_~i~0 > 0); 1739#L12 assume !(1 == main_~i~0); 1759#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 1692#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1708#L18-1 assume !!(main_~i~0 > 0); 1761#L12 assume !(1 == main_~i~0); 1760#L12-2 assume !(10 == main_~i~0); 1758#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1757#L18-1 assume !!(main_~i~0 > 0); 1756#L12 assume !(1 == main_~i~0); 1755#L12-2 assume !(10 == main_~i~0); 1754#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1753#L18-1 assume !!(main_~i~0 > 0); 1752#L12 assume !(1 == main_~i~0); 1726#L12-2 assume !(10 == main_~i~0); 1736#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 1733#L18-1 assume !!(main_~i~0 > 0); 1725#L12 assume 1 == main_~i~0;main_~up~0 := 1; 1709#L12-2 [2019-11-25 08:52:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,722 INFO L82 PathProgramCache]: Analyzing trace with hash 442274465, now seen corresponding path program 4 times [2019-11-25 08:52:54,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,722 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870904576] [2019-11-25 08:52:54,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:54,826 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870904576] [2019-11-25 08:52:54,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884861522] [2019-11-25 08:52:54,827 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:54,854 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:52:54,854 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:54,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:54,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:54,866 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 45 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-25 08:52:54,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:54,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 10 [2019-11-25 08:52:54,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986483547] [2019-11-25 08:52:54,868 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:54,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:54,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1418092737, now seen corresponding path program 4 times [2019-11-25 08:52:54,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:54,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402281239] [2019-11-25 08:52:54,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:54,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402281239] [2019-11-25 08:52:54,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535609451] [2019-11-25 08:52:54,964 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:54,997 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:52:54,997 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:54,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:52:54,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:55,002 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:55,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:55,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-25 08:52:55,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022351687] [2019-11-25 08:52:55,003 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:55,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:55,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:52:55,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:52:55,004 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. cyclomatic complexity: 24 Second operand 7 states. [2019-11-25 08:52:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:55,052 INFO L93 Difference]: Finished difference Result 100 states and 124 transitions. [2019-11-25 08:52:55,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:52:55,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 124 transitions. [2019-11-25 08:52:55,053 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2019-11-25 08:52:55,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 99 states and 123 transitions. [2019-11-25 08:52:55,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2019-11-25 08:52:55,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2019-11-25 08:52:55,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 123 transitions. [2019-11-25 08:52:55,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:55,055 INFO L688 BuchiCegarLoop]: Abstraction has 99 states and 123 transitions. [2019-11-25 08:52:55,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 123 transitions. [2019-11-25 08:52:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 92. [2019-11-25 08:52:55,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-25 08:52:55,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2019-11-25 08:52:55,059 INFO L711 BuchiCegarLoop]: Abstraction has 92 states and 113 transitions. [2019-11-25 08:52:55,059 INFO L591 BuchiCegarLoop]: Abstraction has 92 states and 113 transitions. [2019-11-25 08:52:55,059 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-25 08:52:55,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 92 states and 113 transitions. [2019-11-25 08:52:55,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2019-11-25 08:52:55,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:55,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:55,062 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [8, 6, 6, 5, 2, 2, 1, 1] [2019-11-25 08:52:55,062 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 5, 2, 1, 1] [2019-11-25 08:52:55,062 INFO L794 eck$LassoCheckResult]: Stem: 2041#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2042#L18-1 assume !!(main_~i~0 > 0); 2063#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2062#L12-2 assume !(10 == main_~i~0); 2061#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2060#L18-1 assume !!(main_~i~0 > 0); 2057#L12 assume !(1 == main_~i~0); 2059#L12-2 assume !(10 == main_~i~0); 2058#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2056#L18-1 assume !!(main_~i~0 > 0); 2055#L12 assume !(1 == main_~i~0); 2054#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2048#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2049#L18-1 assume !!(main_~i~0 > 0); 2098#L12 assume !(1 == main_~i~0); 2097#L12-2 assume !(10 == main_~i~0); 2096#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2095#L18-1 assume !!(main_~i~0 > 0); 2094#L12 assume !(1 == main_~i~0); 2093#L12-2 assume !(10 == main_~i~0); 2092#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2091#L18-1 assume !!(main_~i~0 > 0); 2090#L12 assume !(1 == main_~i~0); 2089#L12-2 assume !(10 == main_~i~0); 2088#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2087#L18-1 assume !!(main_~i~0 > 0); 2086#L12 assume !(1 == main_~i~0); 2072#L12-2 assume !(10 == main_~i~0); 2075#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2074#L18-1 assume !!(main_~i~0 > 0); 2071#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2069#L12-2 [2019-11-25 08:52:55,063 INFO L796 eck$LassoCheckResult]: Loop: 2069#L12-2 assume !(10 == main_~i~0); 2084#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2082#L18-1 assume !!(main_~i~0 > 0); 2073#L12 assume !(1 == main_~i~0); 2052#L12-2 assume !(10 == main_~i~0); 2053#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2115#L18-1 assume !!(main_~i~0 > 0); 2113#L12 assume !(1 == main_~i~0); 2111#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2037#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2051#L18-1 assume !!(main_~i~0 > 0); 2114#L12 assume !(1 == main_~i~0); 2112#L12-2 assume !(10 == main_~i~0); 2110#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2109#L18-1 assume !!(main_~i~0 > 0); 2108#L12 assume !(1 == main_~i~0); 2107#L12-2 assume !(10 == main_~i~0); 2106#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2105#L18-1 assume !!(main_~i~0 > 0); 2104#L12 assume !(1 == main_~i~0); 2103#L12-2 assume !(10 == main_~i~0); 2102#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2101#L18-1 assume !!(main_~i~0 > 0); 2100#L12 assume !(1 == main_~i~0); 2070#L12-2 assume !(10 == main_~i~0); 2080#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2076#L18-1 assume !!(main_~i~0 > 0); 2068#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2069#L12-2 [2019-11-25 08:52:55,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:55,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1631159412, now seen corresponding path program 5 times [2019-11-25 08:52:55,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:55,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901558428] [2019-11-25 08:52:55,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 14 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:55,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901558428] [2019-11-25 08:52:55,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929727949] [2019-11-25 08:52:55,133 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:55,173 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-11-25 08:52:55,174 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:55,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:55,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-25 08:52:55,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:55,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 11 [2019-11-25 08:52:55,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344168401] [2019-11-25 08:52:55,190 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:55,191 INFO L82 PathProgramCache]: Analyzing trace with hash 187697450, now seen corresponding path program 5 times [2019-11-25 08:52:55,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:55,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238408965] [2019-11-25 08:52:55,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:55,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238408965] [2019-11-25 08:52:55,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753645897] [2019-11-25 08:52:55,247 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:55,276 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-25 08:52:55,276 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:55,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:52:55,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:55,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:55,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-25 08:52:55,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012551282] [2019-11-25 08:52:55,285 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:55,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:55,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:52:55,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:52:55,286 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. cyclomatic complexity: 27 Second operand 8 states. [2019-11-25 08:52:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:55,341 INFO L93 Difference]: Finished difference Result 112 states and 139 transitions. [2019-11-25 08:52:55,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:52:55,342 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 139 transitions. [2019-11-25 08:52:55,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 34 [2019-11-25 08:52:55,344 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 111 states and 138 transitions. [2019-11-25 08:52:55,344 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2019-11-25 08:52:55,344 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2019-11-25 08:52:55,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 138 transitions. [2019-11-25 08:52:55,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:55,345 INFO L688 BuchiCegarLoop]: Abstraction has 111 states and 138 transitions. [2019-11-25 08:52:55,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 138 transitions. [2019-11-25 08:52:55,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2019-11-25 08:52:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-25 08:52:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2019-11-25 08:52:55,348 INFO L711 BuchiCegarLoop]: Abstraction has 104 states and 128 transitions. [2019-11-25 08:52:55,348 INFO L591 BuchiCegarLoop]: Abstraction has 104 states and 128 transitions. [2019-11-25 08:52:55,349 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-11-25 08:52:55,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 128 transitions. [2019-11-25 08:52:55,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2019-11-25 08:52:55,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:55,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:55,351 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [9, 7, 7, 6, 2, 2, 1, 1] [2019-11-25 08:52:55,352 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 6, 2, 1, 1] [2019-11-25 08:52:55,352 INFO L794 eck$LassoCheckResult]: Stem: 2436#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2437#L18-1 assume !!(main_~i~0 > 0); 2460#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2459#L12-2 assume !(10 == main_~i~0); 2458#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2457#L18-1 assume !!(main_~i~0 > 0); 2454#L12 assume !(1 == main_~i~0); 2456#L12-2 assume !(10 == main_~i~0); 2455#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2453#L18-1 assume !!(main_~i~0 > 0); 2452#L12 assume !(1 == main_~i~0); 2451#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2445#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2446#L18-1 assume !!(main_~i~0 > 0); 2500#L12 assume !(1 == main_~i~0); 2499#L12-2 assume !(10 == main_~i~0); 2498#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2497#L18-1 assume !!(main_~i~0 > 0); 2496#L12 assume !(1 == main_~i~0); 2495#L12-2 assume !(10 == main_~i~0); 2494#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2493#L18-1 assume !!(main_~i~0 > 0); 2492#L12 assume !(1 == main_~i~0); 2491#L12-2 assume !(10 == main_~i~0); 2490#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2489#L18-1 assume !!(main_~i~0 > 0); 2488#L12 assume !(1 == main_~i~0); 2487#L12-2 assume !(10 == main_~i~0); 2486#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2485#L18-1 assume !!(main_~i~0 > 0); 2484#L12 assume !(1 == main_~i~0); 2468#L12-2 assume !(10 == main_~i~0); 2472#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2471#L18-1 assume !!(main_~i~0 > 0); 2467#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2449#L12-2 [2019-11-25 08:52:55,352 INFO L796 eck$LassoCheckResult]: Loop: 2449#L12-2 assume !(10 == main_~i~0); 2450#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2479#L18-1 assume !!(main_~i~0 > 0); 2469#L12 assume !(1 == main_~i~0); 2470#L12-2 assume !(10 == main_~i~0); 2481#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2482#L18-1 assume !!(main_~i~0 > 0); 2525#L12 assume !(1 == main_~i~0); 2523#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2432#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2448#L18-1 assume !!(main_~i~0 > 0); 2442#L12 assume !(1 == main_~i~0); 2443#L12-2 assume !(10 == main_~i~0); 2516#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2515#L18-1 assume !!(main_~i~0 > 0); 2514#L12 assume !(1 == main_~i~0); 2513#L12-2 assume !(10 == main_~i~0); 2512#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2511#L18-1 assume !!(main_~i~0 > 0); 2510#L12 assume !(1 == main_~i~0); 2509#L12-2 assume !(10 == main_~i~0); 2508#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2507#L18-1 assume !!(main_~i~0 > 0); 2506#L12 assume !(1 == main_~i~0); 2505#L12-2 assume !(10 == main_~i~0); 2504#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2503#L18-1 assume !!(main_~i~0 > 0); 2502#L12 assume !(1 == main_~i~0); 2466#L12-2 assume !(10 == main_~i~0); 2478#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2476#L18-1 assume !!(main_~i~0 > 0); 2465#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2449#L12-2 [2019-11-25 08:52:55,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:55,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1729366281, now seen corresponding path program 6 times [2019-11-25 08:52:55,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:55,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621840918] [2019-11-25 08:52:55,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:55,457 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 16 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:55,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621840918] [2019-11-25 08:52:55,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509455778] [2019-11-25 08:52:55,458 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:55,484 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-25 08:52:55,484 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:55,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:52:55,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 63 proven. 55 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-25 08:52:55,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:55,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2019-11-25 08:52:55,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041880366] [2019-11-25 08:52:55,597 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:55,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1954121109, now seen corresponding path program 6 times [2019-11-25 08:52:55,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:55,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860092530] [2019-11-25 08:52:55,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:55,654 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860092530] [2019-11-25 08:52:55,655 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448786688] [2019-11-25 08:52:55,655 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:55,685 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-25 08:52:55,685 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:55,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:52:55,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 55 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:55,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:55,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-25 08:52:55,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230984724] [2019-11-25 08:52:55,695 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:55,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:55,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:52:55,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:52:55,696 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. cyclomatic complexity: 30 Second operand 9 states. [2019-11-25 08:52:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:55,776 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2019-11-25 08:52:55,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:52:55,777 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 154 transitions. [2019-11-25 08:52:55,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 38 [2019-11-25 08:52:55,779 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 123 states and 153 transitions. [2019-11-25 08:52:55,779 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2019-11-25 08:52:55,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-25 08:52:55,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 153 transitions. [2019-11-25 08:52:55,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:55,779 INFO L688 BuchiCegarLoop]: Abstraction has 123 states and 153 transitions. [2019-11-25 08:52:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states and 153 transitions. [2019-11-25 08:52:55,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 116. [2019-11-25 08:52:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2019-11-25 08:52:55,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2019-11-25 08:52:55,782 INFO L711 BuchiCegarLoop]: Abstraction has 116 states and 143 transitions. [2019-11-25 08:52:55,782 INFO L591 BuchiCegarLoop]: Abstraction has 116 states and 143 transitions. [2019-11-25 08:52:55,782 INFO L424 BuchiCegarLoop]: ======== Iteration 14============ [2019-11-25 08:52:55,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 116 states and 143 transitions. [2019-11-25 08:52:55,783 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2019-11-25 08:52:55,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:55,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:55,784 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [10, 8, 8, 7, 2, 2, 1, 1] [2019-11-25 08:52:55,784 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 7, 2, 1, 1] [2019-11-25 08:52:55,785 INFO L794 eck$LassoCheckResult]: Stem: 2888#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2889#L18-1 assume !!(main_~i~0 > 0); 2912#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2911#L12-2 assume !(10 == main_~i~0); 2910#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2909#L18-1 assume !!(main_~i~0 > 0); 2906#L12 assume !(1 == main_~i~0); 2908#L12-2 assume !(10 == main_~i~0); 2907#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2905#L18-1 assume !!(main_~i~0 > 0); 2904#L12 assume !(1 == main_~i~0); 2903#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2897#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2898#L18-1 assume !!(main_~i~0 > 0); 2956#L12 assume !(1 == main_~i~0); 2955#L12-2 assume !(10 == main_~i~0); 2954#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2953#L18-1 assume !!(main_~i~0 > 0); 2952#L12 assume !(1 == main_~i~0); 2951#L12-2 assume !(10 == main_~i~0); 2950#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2949#L18-1 assume !!(main_~i~0 > 0); 2948#L12 assume !(1 == main_~i~0); 2947#L12-2 assume !(10 == main_~i~0); 2946#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2945#L18-1 assume !!(main_~i~0 > 0); 2944#L12 assume !(1 == main_~i~0); 2943#L12-2 assume !(10 == main_~i~0); 2942#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2941#L18-1 assume !!(main_~i~0 > 0); 2940#L12 assume !(1 == main_~i~0); 2939#L12-2 assume !(10 == main_~i~0); 2938#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2937#L18-1 assume !!(main_~i~0 > 0); 2936#L12 assume !(1 == main_~i~0); 2920#L12-2 assume !(10 == main_~i~0); 2924#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2923#L18-1 assume !!(main_~i~0 > 0); 2919#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2901#L12-2 [2019-11-25 08:52:55,785 INFO L796 eck$LassoCheckResult]: Loop: 2901#L12-2 assume !(10 == main_~i~0); 2902#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2931#L18-1 assume !!(main_~i~0 > 0); 2921#L12 assume !(1 == main_~i~0); 2922#L12-2 assume !(10 == main_~i~0); 2933#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 2934#L18-1 assume !!(main_~i~0 > 0); 2985#L12 assume !(1 == main_~i~0); 2983#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 2884#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2900#L18-1 assume !!(main_~i~0 > 0); 2894#L12 assume !(1 == main_~i~0); 2895#L12-2 assume !(10 == main_~i~0); 2976#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2975#L18-1 assume !!(main_~i~0 > 0); 2974#L12 assume !(1 == main_~i~0); 2973#L12-2 assume !(10 == main_~i~0); 2972#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2971#L18-1 assume !!(main_~i~0 > 0); 2970#L12 assume !(1 == main_~i~0); 2969#L12-2 assume !(10 == main_~i~0); 2968#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2967#L18-1 assume !!(main_~i~0 > 0); 2966#L12 assume !(1 == main_~i~0); 2965#L12-2 assume !(10 == main_~i~0); 2964#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2963#L18-1 assume !!(main_~i~0 > 0); 2962#L12 assume !(1 == main_~i~0); 2961#L12-2 assume !(10 == main_~i~0); 2960#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2959#L18-1 assume !!(main_~i~0 > 0); 2958#L12 assume !(1 == main_~i~0); 2918#L12-2 assume !(10 == main_~i~0); 2930#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 2928#L18-1 assume !!(main_~i~0 > 0); 2917#L12 assume 1 == main_~i~0;main_~up~0 := 1; 2901#L12-2 [2019-11-25 08:52:55,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:55,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1010842398, now seen corresponding path program 7 times [2019-11-25 08:52:55,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:55,785 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338992018] [2019-11-25 08:52:55,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:55,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338992018] [2019-11-25 08:52:55,880 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456956736] [2019-11-25 08:52:55,880 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:55,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:55,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 78 proven. 6 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-11-25 08:52:55,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:55,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 13 [2019-11-25 08:52:55,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070636231] [2019-11-25 08:52:55,909 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:55,909 INFO L82 PathProgramCache]: Analyzing trace with hash -360131456, now seen corresponding path program 7 times [2019-11-25 08:52:55,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:55,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984053214] [2019-11-25 08:52:55,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:55,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984053214] [2019-11-25 08:52:55,974 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845149105] [2019-11-25 08:52:55,974 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:56,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:52:56,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 78 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:56,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:56,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-25 08:52:56,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011283712] [2019-11-25 08:52:56,023 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:56,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:56,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:52:56,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:52:56,025 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. cyclomatic complexity: 33 Second operand 10 states. [2019-11-25 08:52:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:56,092 INFO L93 Difference]: Finished difference Result 136 states and 169 transitions. [2019-11-25 08:52:56,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:52:56,092 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 169 transitions. [2019-11-25 08:52:56,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 42 [2019-11-25 08:52:56,095 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 135 states and 168 transitions. [2019-11-25 08:52:56,095 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 57 [2019-11-25 08:52:56,095 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2019-11-25 08:52:56,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 135 states and 168 transitions. [2019-11-25 08:52:56,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:56,095 INFO L688 BuchiCegarLoop]: Abstraction has 135 states and 168 transitions. [2019-11-25 08:52:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states and 168 transitions. [2019-11-25 08:52:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 128. [2019-11-25 08:52:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2019-11-25 08:52:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 158 transitions. [2019-11-25 08:52:56,098 INFO L711 BuchiCegarLoop]: Abstraction has 128 states and 158 transitions. [2019-11-25 08:52:56,098 INFO L591 BuchiCegarLoop]: Abstraction has 128 states and 158 transitions. [2019-11-25 08:52:56,098 INFO L424 BuchiCegarLoop]: ======== Iteration 15============ [2019-11-25 08:52:56,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 128 states and 158 transitions. [2019-11-25 08:52:56,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2019-11-25 08:52:56,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:56,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:56,105 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 8, 2, 2, 1, 1] [2019-11-25 08:52:56,105 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 8, 2, 1, 1] [2019-11-25 08:52:56,106 INFO L794 eck$LassoCheckResult]: Stem: 3383#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3384#L18-1 assume !!(main_~i~0 > 0); 3405#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3404#L12-2 assume !(10 == main_~i~0); 3403#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3402#L18-1 assume !!(main_~i~0 > 0); 3399#L12 assume !(1 == main_~i~0); 3401#L12-2 assume !(10 == main_~i~0); 3400#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3398#L18-1 assume !!(main_~i~0 > 0); 3397#L12 assume !(1 == main_~i~0); 3396#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3390#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3391#L18-1 assume !!(main_~i~0 > 0); 3452#L12 assume !(1 == main_~i~0); 3451#L12-2 assume !(10 == main_~i~0); 3450#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3449#L18-1 assume !!(main_~i~0 > 0); 3448#L12 assume !(1 == main_~i~0); 3447#L12-2 assume !(10 == main_~i~0); 3446#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3445#L18-1 assume !!(main_~i~0 > 0); 3444#L12 assume !(1 == main_~i~0); 3443#L12-2 assume !(10 == main_~i~0); 3442#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3441#L18-1 assume !!(main_~i~0 > 0); 3440#L12 assume !(1 == main_~i~0); 3439#L12-2 assume !(10 == main_~i~0); 3438#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3437#L18-1 assume !!(main_~i~0 > 0); 3436#L12 assume !(1 == main_~i~0); 3435#L12-2 assume !(10 == main_~i~0); 3434#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3433#L18-1 assume !!(main_~i~0 > 0); 3432#L12 assume !(1 == main_~i~0); 3431#L12-2 assume !(10 == main_~i~0); 3430#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3429#L18-1 assume !!(main_~i~0 > 0); 3428#L12 assume !(1 == main_~i~0); 3414#L12-2 assume !(10 == main_~i~0); 3417#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3416#L18-1 assume !!(main_~i~0 > 0); 3413#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3411#L12-2 [2019-11-25 08:52:56,108 INFO L796 eck$LassoCheckResult]: Loop: 3411#L12-2 assume !(10 == main_~i~0); 3426#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3424#L18-1 assume !!(main_~i~0 > 0); 3415#L12 assume !(1 == main_~i~0); 3394#L12-2 assume !(10 == main_~i~0); 3395#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3481#L18-1 assume !!(main_~i~0 > 0); 3479#L12 assume !(1 == main_~i~0); 3477#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3379#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3393#L18-1 assume !!(main_~i~0 > 0); 3480#L12 assume !(1 == main_~i~0); 3478#L12-2 assume !(10 == main_~i~0); 3476#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3475#L18-1 assume !!(main_~i~0 > 0); 3474#L12 assume !(1 == main_~i~0); 3473#L12-2 assume !(10 == main_~i~0); 3472#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3471#L18-1 assume !!(main_~i~0 > 0); 3470#L12 assume !(1 == main_~i~0); 3469#L12-2 assume !(10 == main_~i~0); 3468#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3467#L18-1 assume !!(main_~i~0 > 0); 3466#L12 assume !(1 == main_~i~0); 3465#L12-2 assume !(10 == main_~i~0); 3464#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3463#L18-1 assume !!(main_~i~0 > 0); 3462#L12 assume !(1 == main_~i~0); 3461#L12-2 assume !(10 == main_~i~0); 3460#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3459#L18-1 assume !!(main_~i~0 > 0); 3458#L12 assume !(1 == main_~i~0); 3457#L12-2 assume !(10 == main_~i~0); 3456#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3455#L18-1 assume !!(main_~i~0 > 0); 3454#L12 assume !(1 == main_~i~0); 3412#L12-2 assume !(10 == main_~i~0); 3422#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3418#L18-1 assume !!(main_~i~0 > 0); 3410#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3411#L12-2 [2019-11-25 08:52:56,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:56,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1563122355, now seen corresponding path program 8 times [2019-11-25 08:52:56,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:56,108 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719187250] [2019-11-25 08:52:56,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 20 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:52:56,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719187250] [2019-11-25 08:52:56,247 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648459388] [2019-11-25 08:52:56,247 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:56,274 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:52:56,274 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:56,274 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:56,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 89 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2019-11-25 08:52:56,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:56,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5] total 14 [2019-11-25 08:52:56,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801980542] [2019-11-25 08:52:56,281 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:56,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:56,281 INFO L82 PathProgramCache]: Analyzing trace with hash 422622699, now seen corresponding path program 8 times [2019-11-25 08:52:56,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:56,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395339663] [2019-11-25 08:52:56,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:56,363 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395339663] [2019-11-25 08:52:56,363 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482179268] [2019-11-25 08:52:56,363 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:56,387 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:52:56,387 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:56,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:52:56,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 69 proven. 105 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:52:56,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:56,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-25 08:52:56,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695711312] [2019-11-25 08:52:56,397 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-25 08:52:56,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:56,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-25 08:52:56,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:52:56,398 INFO L87 Difference]: Start difference. First operand 128 states and 158 transitions. cyclomatic complexity: 36 Second operand 11 states. [2019-11-25 08:52:56,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:56,490 INFO L93 Difference]: Finished difference Result 148 states and 184 transitions. [2019-11-25 08:52:56,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:52:56,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 184 transitions. [2019-11-25 08:52:56,492 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 46 [2019-11-25 08:52:56,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 147 states and 183 transitions. [2019-11-25 08:52:56,493 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2019-11-25 08:52:56,493 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 61 [2019-11-25 08:52:56,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 147 states and 183 transitions. [2019-11-25 08:52:56,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:56,494 INFO L688 BuchiCegarLoop]: Abstraction has 147 states and 183 transitions. [2019-11-25 08:52:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states and 183 transitions. [2019-11-25 08:52:56,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 140. [2019-11-25 08:52:56,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-11-25 08:52:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 173 transitions. [2019-11-25 08:52:56,497 INFO L711 BuchiCegarLoop]: Abstraction has 140 states and 173 transitions. [2019-11-25 08:52:56,497 INFO L591 BuchiCegarLoop]: Abstraction has 140 states and 173 transitions. [2019-11-25 08:52:56,497 INFO L424 BuchiCegarLoop]: ======== Iteration 16============ [2019-11-25 08:52:56,497 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 140 states and 173 transitions. [2019-11-25 08:52:56,498 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2019-11-25 08:52:56,498 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:56,498 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:56,499 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [12, 10, 10, 9, 2, 2, 1, 1] [2019-11-25 08:52:56,499 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2019-11-25 08:52:56,499 INFO L794 eck$LassoCheckResult]: Stem: 3928#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3929#L18-1 assume !!(main_~i~0 > 0); 3952#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3951#L12-2 assume !(10 == main_~i~0); 3950#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3949#L18-1 assume !!(main_~i~0 > 0); 3946#L12 assume !(1 == main_~i~0); 3948#L12-2 assume !(10 == main_~i~0); 3947#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3945#L18-1 assume !!(main_~i~0 > 0); 3944#L12 assume !(1 == main_~i~0); 3943#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3937#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3938#L18-1 assume !!(main_~i~0 > 0); 4004#L12 assume !(1 == main_~i~0); 4003#L12-2 assume !(10 == main_~i~0); 4002#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4001#L18-1 assume !!(main_~i~0 > 0); 4000#L12 assume !(1 == main_~i~0); 3999#L12-2 assume !(10 == main_~i~0); 3998#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3997#L18-1 assume !!(main_~i~0 > 0); 3996#L12 assume !(1 == main_~i~0); 3995#L12-2 assume !(10 == main_~i~0); 3994#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3993#L18-1 assume !!(main_~i~0 > 0); 3992#L12 assume !(1 == main_~i~0); 3991#L12-2 assume !(10 == main_~i~0); 3990#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3989#L18-1 assume !!(main_~i~0 > 0); 3988#L12 assume !(1 == main_~i~0); 3987#L12-2 assume !(10 == main_~i~0); 3986#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3985#L18-1 assume !!(main_~i~0 > 0); 3984#L12 assume !(1 == main_~i~0); 3983#L12-2 assume !(10 == main_~i~0); 3982#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3981#L18-1 assume !!(main_~i~0 > 0); 3980#L12 assume !(1 == main_~i~0); 3979#L12-2 assume !(10 == main_~i~0); 3978#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3977#L18-1 assume !!(main_~i~0 > 0); 3976#L12 assume !(1 == main_~i~0); 3958#L12-2 assume !(10 == main_~i~0); 3964#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3963#L18-1 assume !!(main_~i~0 > 0); 3957#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3941#L12-2 [2019-11-25 08:52:56,499 INFO L796 eck$LassoCheckResult]: Loop: 3941#L12-2 assume !(10 == main_~i~0); 3942#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3971#L18-1 assume !!(main_~i~0 > 0); 3961#L12 assume !(1 == main_~i~0); 3962#L12-2 assume !(10 == main_~i~0); 3973#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 3974#L18-1 assume !!(main_~i~0 > 0); 4041#L12 assume !(1 == main_~i~0); 4039#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 3924#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3940#L18-1 assume !!(main_~i~0 > 0); 3934#L12 assume !(1 == main_~i~0); 3935#L12-2 assume !(10 == main_~i~0); 4032#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4031#L18-1 assume !!(main_~i~0 > 0); 4030#L12 assume !(1 == main_~i~0); 4029#L12-2 assume !(10 == main_~i~0); 4028#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4027#L18-1 assume !!(main_~i~0 > 0); 4026#L12 assume !(1 == main_~i~0); 4025#L12-2 assume !(10 == main_~i~0); 4024#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4023#L18-1 assume !!(main_~i~0 > 0); 4022#L12 assume !(1 == main_~i~0); 4021#L12-2 assume !(10 == main_~i~0); 4020#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4019#L18-1 assume !!(main_~i~0 > 0); 4018#L12 assume !(1 == main_~i~0); 4017#L12-2 assume !(10 == main_~i~0); 4016#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4015#L18-1 assume !!(main_~i~0 > 0); 4014#L12 assume !(1 == main_~i~0); 4013#L12-2 assume !(10 == main_~i~0); 4012#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4011#L18-1 assume !!(main_~i~0 > 0); 4010#L12 assume !(1 == main_~i~0); 4009#L12-2 assume !(10 == main_~i~0); 4008#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 4007#L18-1 assume !!(main_~i~0 > 0); 4006#L12 assume !(1 == main_~i~0); 3960#L12-2 assume !(10 == main_~i~0); 3970#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 3968#L18-1 assume !!(main_~i~0 > 0); 3959#L12 assume 1 == main_~i~0;main_~up~0 := 1; 3941#L12-2 [2019-11-25 08:52:56,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:56,500 INFO L82 PathProgramCache]: Analyzing trace with hash 844978232, now seen corresponding path program 9 times [2019-11-25 08:52:56,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:56,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985696978] [2019-11-25 08:52:56,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:56,528 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:56,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985696978] [2019-11-25 08:52:56,528 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277639907] [2019-11-25 08:52:56,528 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:56,563 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2019-11-25 08:52:56,563 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:56,564 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:52:56,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:56,569 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 6 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:56,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:56,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-25 08:52:56,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316992544] [2019-11-25 08:52:56,570 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:56,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:56,571 INFO L82 PathProgramCache]: Analyzing trace with hash 82045398, now seen corresponding path program 9 times [2019-11-25 08:52:56,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:56,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708565715] [2019-11-25 08:52:56,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:56,583 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:56,750 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 45 [2019-11-25 08:52:56,759 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:56,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:56,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:56,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:56,759 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:56,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:56,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:56,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:56,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration16_Loop [2019-11-25 08:52:56,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:56,760 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:56,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:56,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:56,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:56,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:56,823 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:56,823 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:56,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:56,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:56,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:56,830 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_10=0} Honda state: {v_rep~unnamed0~0~false_10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:56,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:56,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:56,837 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:56,837 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_10=1} Honda state: {v_rep~unnamed0~0~true_10=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:56,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:56,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:56,845 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:56,845 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:56,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:56,849 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:56,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:56,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:56,860 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:56,861 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:56,861 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:56,861 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:56,861 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:56,861 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:56,861 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:56,861 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:56,862 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:56,862 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration16_Loop [2019-11-25 08:52:56,862 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:56,862 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:56,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:56,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:56,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:56,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:56,919 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:56,919 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:56,922 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:56,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:56,924 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:56,924 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:56,924 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:56,926 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:56,926 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:52:56,928 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:56,932 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:56,933 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:56,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:56,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:56,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:56,935 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:56,935 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:52:56,938 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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 [2019-11-25 08:52:56,942 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:56,943 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:56,943 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:56,943 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:56,943 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:56,943 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:56,944 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:56,944 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:56,946 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:56,950 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:56,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:56,951 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:56,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:56,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:56,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:56,952 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:56,952 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:56,954 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:56,956 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:56,956 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:56,959 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:56,959 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:56,959 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:56,959 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:52:56,961 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:56,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:56,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:56,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:56,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:52:56,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:57,040 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:57,040 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 [2019-11-25 08:52:57,040 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 140 states and 173 transitions. cyclomatic complexity: 39 Second operand 8 states. [2019-11-25 08:52:57,394 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 140 states and 173 transitions. cyclomatic complexity: 39. Second operand 8 states. Result 378 states and 460 transitions. Complement of second has 27 states. [2019-11-25 08:52:57,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:52:57,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 38 transitions. [2019-11-25 08:52:57,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 38 transitions. Stem has 47 letters. Loop has 44 letters. [2019-11-25 08:52:57,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:57,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 38 transitions. Stem has 91 letters. Loop has 44 letters. [2019-11-25 08:52:57,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:57,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 38 transitions. Stem has 47 letters. Loop has 88 letters. [2019-11-25 08:52:57,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:57,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 378 states and 460 transitions. [2019-11-25 08:52:57,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2019-11-25 08:52:57,412 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 378 states to 289 states and 350 transitions. [2019-11-25 08:52:57,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 67 [2019-11-25 08:52:57,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 71 [2019-11-25 08:52:57,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 289 states and 350 transitions. [2019-11-25 08:52:57,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:57,413 INFO L688 BuchiCegarLoop]: Abstraction has 289 states and 350 transitions. [2019-11-25 08:52:57,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states and 350 transitions. [2019-11-25 08:52:57,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 197. [2019-11-25 08:52:57,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2019-11-25 08:52:57,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 242 transitions. [2019-11-25 08:52:57,418 INFO L711 BuchiCegarLoop]: Abstraction has 197 states and 242 transitions. [2019-11-25 08:52:57,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:57,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:52:57,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:52:57,419 INFO L87 Difference]: Start difference. First operand 197 states and 242 transitions. Second operand 5 states. [2019-11-25 08:52:57,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:57,446 INFO L93 Difference]: Finished difference Result 167 states and 201 transitions. [2019-11-25 08:52:57,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:52:57,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 167 states and 201 transitions. [2019-11-25 08:52:57,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2019-11-25 08:52:57,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 167 states to 159 states and 192 transitions. [2019-11-25 08:52:57,454 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2019-11-25 08:52:57,454 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2019-11-25 08:52:57,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 192 transitions. [2019-11-25 08:52:57,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:57,455 INFO L688 BuchiCegarLoop]: Abstraction has 159 states and 192 transitions. [2019-11-25 08:52:57,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 192 transitions. [2019-11-25 08:52:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2019-11-25 08:52:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-11-25 08:52:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 185 transitions. [2019-11-25 08:52:57,458 INFO L711 BuchiCegarLoop]: Abstraction has 152 states and 185 transitions. [2019-11-25 08:52:57,459 INFO L591 BuchiCegarLoop]: Abstraction has 152 states and 185 transitions. [2019-11-25 08:52:57,459 INFO L424 BuchiCegarLoop]: ======== Iteration 17============ [2019-11-25 08:52:57,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 185 transitions. [2019-11-25 08:52:57,460 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 48 [2019-11-25 08:52:57,460 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:57,460 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:57,462 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [13, 11, 11, 9, 3, 2, 1, 1] [2019-11-25 08:52:57,462 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 9, 3, 1, 1] [2019-11-25 08:52:57,462 INFO L794 eck$LassoCheckResult]: Stem: 5288#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5289#L18-1 assume !!(main_~i~0 > 0); 5316#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5315#L12-2 assume !(10 == main_~i~0); 5314#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5313#L18-1 assume !!(main_~i~0 > 0); 5312#L12 assume !(1 == main_~i~0); 5311#L12-2 assume !(10 == main_~i~0); 5310#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5309#L18-1 assume !!(main_~i~0 > 0); 5306#L12 assume !(1 == main_~i~0); 5308#L12-2 assume !(10 == main_~i~0); 5307#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5305#L18-1 assume !!(main_~i~0 > 0); 5304#L12 assume !(1 == main_~i~0); 5303#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5296#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5297#L18-1 assume !!(main_~i~0 > 0); 5359#L12 assume !(1 == main_~i~0); 5358#L12-2 assume !(10 == main_~i~0); 5357#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5356#L18-1 assume !!(main_~i~0 > 0); 5355#L12 assume !(1 == main_~i~0); 5354#L12-2 assume !(10 == main_~i~0); 5353#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5352#L18-1 assume !!(main_~i~0 > 0); 5351#L12 assume !(1 == main_~i~0); 5350#L12-2 assume !(10 == main_~i~0); 5349#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5348#L18-1 assume !!(main_~i~0 > 0); 5347#L12 assume !(1 == main_~i~0); 5346#L12-2 assume !(10 == main_~i~0); 5345#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5344#L18-1 assume !!(main_~i~0 > 0); 5343#L12 assume !(1 == main_~i~0); 5342#L12-2 assume !(10 == main_~i~0); 5341#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5340#L18-1 assume !!(main_~i~0 > 0); 5339#L12 assume !(1 == main_~i~0); 5338#L12-2 assume !(10 == main_~i~0); 5337#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5336#L18-1 assume !!(main_~i~0 > 0); 5335#L12 assume !(1 == main_~i~0); 5334#L12-2 assume !(10 == main_~i~0); 5333#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5332#L18-1 assume !!(main_~i~0 > 0); 5331#L12 assume !(1 == main_~i~0); 5326#L12-2 assume !(10 == main_~i~0); 5329#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5328#L18-1 assume !!(main_~i~0 > 0); 5324#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5325#L12-2 [2019-11-25 08:52:57,463 INFO L796 eck$LassoCheckResult]: Loop: 5325#L12-2 assume !(10 == main_~i~0); 5299#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5290#L18-1 assume !!(main_~i~0 > 0); 5291#L12 assume !(1 == main_~i~0); 5433#L12-2 assume !(10 == main_~i~0); 5435#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5434#L18-1 assume !!(main_~i~0 > 0); 5327#L12 assume !(1 == main_~i~0); 5301#L12-2 assume !(10 == main_~i~0); 5302#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 5431#L18-1 assume !!(main_~i~0 > 0); 5429#L12 assume !(1 == main_~i~0); 5427#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 5285#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5300#L18-1 assume !!(main_~i~0 > 0); 5294#L12 assume !(1 == main_~i~0); 5295#L12-2 assume !(10 == main_~i~0); 5420#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5418#L18-1 assume !!(main_~i~0 > 0); 5416#L12 assume !(1 == main_~i~0); 5414#L12-2 assume !(10 == main_~i~0); 5412#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5410#L18-1 assume !!(main_~i~0 > 0); 5408#L12 assume !(1 == main_~i~0); 5406#L12-2 assume !(10 == main_~i~0); 5404#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5402#L18-1 assume !!(main_~i~0 > 0); 5400#L12 assume !(1 == main_~i~0); 5398#L12-2 assume !(10 == main_~i~0); 5396#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5394#L18-1 assume !!(main_~i~0 > 0); 5392#L12 assume !(1 == main_~i~0); 5390#L12-2 assume !(10 == main_~i~0); 5388#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5386#L18-1 assume !!(main_~i~0 > 0); 5384#L12 assume !(1 == main_~i~0); 5382#L12-2 assume !(10 == main_~i~0); 5380#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5378#L18-1 assume !!(main_~i~0 > 0); 5376#L12 assume !(1 == main_~i~0); 5374#L12-2 assume !(10 == main_~i~0); 5372#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5370#L18-1 assume !!(main_~i~0 > 0); 5368#L12 assume !(1 == main_~i~0); 5366#L12-2 assume !(10 == main_~i~0); 5364#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 5360#L18-1 assume !!(main_~i~0 > 0); 5361#L12 assume 1 == main_~i~0;main_~up~0 := 1; 5325#L12-2 [2019-11-25 08:52:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:57,463 INFO L82 PathProgramCache]: Analyzing trace with hash -890757087, now seen corresponding path program 10 times [2019-11-25 08:52:57,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:57,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599487539] [2019-11-25 08:52:57,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:57,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599487539] [2019-11-25 08:52:57,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133932617] [2019-11-25 08:52:57,503 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:57,539 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-25 08:52:57,540 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:57,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:52:57,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 137 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:57,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:57,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-25 08:52:57,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861508299] [2019-11-25 08:52:57,552 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:57,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:57,552 INFO L82 PathProgramCache]: Analyzing trace with hash -294604097, now seen corresponding path program 10 times [2019-11-25 08:52:57,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:57,553 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617178395] [2019-11-25 08:52:57,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:57,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:57,574 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:57,792 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2019-11-25 08:52:57,803 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:57,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:57,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:57,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:57,803 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:57,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:57,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:57,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:57,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2019-11-25 08:52:57,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:57,804 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:57,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:57,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:57,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:57,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:57,911 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:57,911 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/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) [2019-11-25 08:52:57,923 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:57,923 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:57,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:57,928 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_12=1} Honda state: {v_rep~unnamed0~0~true_12=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:57,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:57,938 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:57,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:57,954 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:57,959 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:57,961 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:57,961 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:57,961 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:57,961 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:57,961 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:57,962 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:57,962 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:57,962 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:57,962 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration17_Loop [2019-11-25 08:52:57,962 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:57,962 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:57,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:57,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:57,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:57,976 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,030 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:58,030 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:58,038 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:58,040 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:58,040 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:58,040 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:58,040 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:58,042 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:58,042 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,046 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:58,051 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:58,053 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:58,053 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:58,053 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:58,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:58,056 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:58,056 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,060 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:58,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:58,067 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:58,067 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:58,067 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:58,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:58,068 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:58,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:58,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,072 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:58,074 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:52:58,074 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:58,079 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:58,079 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:58,079 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:58,079 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:52:58,081 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:58,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:58,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:58,128 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:52:58,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:58,173 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:58,173 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 [2019-11-25 08:52:58,173 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 152 states and 185 transitions. cyclomatic complexity: 39 Second operand 7 states. [2019-11-25 08:52:58,356 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 152 states and 185 transitions. cyclomatic complexity: 39. Second operand 7 states. Result 486 states and 584 transitions. Complement of second has 19 states. [2019-11-25 08:52:58,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-25 08:52:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 44 transitions. [2019-11-25 08:52:58,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 51 letters. Loop has 48 letters. [2019-11-25 08:52:58,358 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:58,358 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 99 letters. Loop has 48 letters. [2019-11-25 08:52:58,359 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:58,359 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 44 transitions. Stem has 51 letters. Loop has 96 letters. [2019-11-25 08:52:58,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:58,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 486 states and 584 transitions. [2019-11-25 08:52:58,366 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2019-11-25 08:52:58,369 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 486 states to 419 states and 494 transitions. [2019-11-25 08:52:58,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2019-11-25 08:52:58,370 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2019-11-25 08:52:58,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 419 states and 494 transitions. [2019-11-25 08:52:58,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:58,375 INFO L688 BuchiCegarLoop]: Abstraction has 419 states and 494 transitions. [2019-11-25 08:52:58,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states and 494 transitions. [2019-11-25 08:52:58,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 385. [2019-11-25 08:52:58,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2019-11-25 08:52:58,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 460 transitions. [2019-11-25 08:52:58,383 INFO L711 BuchiCegarLoop]: Abstraction has 385 states and 460 transitions. [2019-11-25 08:52:58,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:58,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:52:58,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:52:58,384 INFO L87 Difference]: Start difference. First operand 385 states and 460 transitions. Second operand 6 states. [2019-11-25 08:52:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:58,417 INFO L93 Difference]: Finished difference Result 195 states and 228 transitions. [2019-11-25 08:52:58,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:52:58,418 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 228 transitions. [2019-11-25 08:52:58,419 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 53 [2019-11-25 08:52:58,420 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 171 states and 204 transitions. [2019-11-25 08:52:58,421 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 68 [2019-11-25 08:52:58,421 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 68 [2019-11-25 08:52:58,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 171 states and 204 transitions. [2019-11-25 08:52:58,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:58,421 INFO L688 BuchiCegarLoop]: Abstraction has 171 states and 204 transitions. [2019-11-25 08:52:58,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states and 204 transitions. [2019-11-25 08:52:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 164. [2019-11-25 08:52:58,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-11-25 08:52:58,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 197 transitions. [2019-11-25 08:52:58,424 INFO L711 BuchiCegarLoop]: Abstraction has 164 states and 197 transitions. [2019-11-25 08:52:58,424 INFO L591 BuchiCegarLoop]: Abstraction has 164 states and 197 transitions. [2019-11-25 08:52:58,425 INFO L424 BuchiCegarLoop]: ======== Iteration 18============ [2019-11-25 08:52:58,425 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 164 states and 197 transitions. [2019-11-25 08:52:58,426 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 52 [2019-11-25 08:52:58,426 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:58,426 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:58,427 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [14, 12, 12, 9, 4, 2, 1, 1] [2019-11-25 08:52:58,427 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 9, 4, 1, 1] [2019-11-25 08:52:58,427 INFO L794 eck$LassoCheckResult]: Stem: 7004#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 7005#L18-1 assume !!(main_~i~0 > 0); 7033#L12 assume 1 == main_~i~0;main_~up~0 := 1; 7032#L12-2 assume !(10 == main_~i~0); 7031#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7030#L18-1 assume !!(main_~i~0 > 0); 7029#L12 assume !(1 == main_~i~0); 7028#L12-2 assume !(10 == main_~i~0); 7027#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7026#L18-1 assume !!(main_~i~0 > 0); 7025#L12 assume !(1 == main_~i~0); 7024#L12-2 assume !(10 == main_~i~0); 7023#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7022#L18-1 assume !!(main_~i~0 > 0); 7019#L12 assume !(1 == main_~i~0); 7021#L12-2 assume !(10 == main_~i~0); 7020#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7018#L18-1 assume !!(main_~i~0 > 0); 7017#L12 assume !(1 == main_~i~0); 7016#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 7011#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7012#L18-1 assume !!(main_~i~0 > 0); 7076#L12 assume !(1 == main_~i~0); 7075#L12-2 assume !(10 == main_~i~0); 7074#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7073#L18-1 assume !!(main_~i~0 > 0); 7072#L12 assume !(1 == main_~i~0); 7071#L12-2 assume !(10 == main_~i~0); 7070#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7069#L18-1 assume !!(main_~i~0 > 0); 7068#L12 assume !(1 == main_~i~0); 7067#L12-2 assume !(10 == main_~i~0); 7066#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7065#L18-1 assume !!(main_~i~0 > 0); 7064#L12 assume !(1 == main_~i~0); 7063#L12-2 assume !(10 == main_~i~0); 7062#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7061#L18-1 assume !!(main_~i~0 > 0); 7060#L12 assume !(1 == main_~i~0); 7059#L12-2 assume !(10 == main_~i~0); 7058#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7057#L18-1 assume !!(main_~i~0 > 0); 7056#L12 assume !(1 == main_~i~0); 7055#L12-2 assume !(10 == main_~i~0); 7054#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7053#L18-1 assume !!(main_~i~0 > 0); 7052#L12 assume !(1 == main_~i~0); 7051#L12-2 assume !(10 == main_~i~0); 7050#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7049#L18-1 assume !!(main_~i~0 > 0); 7048#L12 assume !(1 == main_~i~0); 7042#L12-2 assume !(10 == main_~i~0); 7046#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7045#L18-1 assume !!(main_~i~0 > 0); 7040#L12 assume 1 == main_~i~0;main_~up~0 := 1; 7041#L12-2 [2019-11-25 08:52:58,428 INFO L796 eck$LassoCheckResult]: Loop: 7041#L12-2 assume !(10 == main_~i~0); 7163#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7162#L18-1 assume !!(main_~i~0 > 0); 7043#L12 assume !(1 == main_~i~0); 7044#L12-2 assume !(10 == main_~i~0); 7161#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7160#L18-1 assume !!(main_~i~0 > 0); 7159#L12 assume !(1 == main_~i~0); 7158#L12-2 assume !(10 == main_~i~0); 7156#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7154#L18-1 assume !!(main_~i~0 > 0); 7152#L12 assume !(1 == main_~i~0); 7151#L12-2 assume !(10 == main_~i~0); 7146#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 7149#L18-1 assume !!(main_~i~0 > 0); 7148#L12 assume !(1 == main_~i~0); 7145#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 7001#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7014#L18-1 assume !!(main_~i~0 > 0); 7141#L12 assume !(1 == main_~i~0); 7139#L12-2 assume !(10 == main_~i~0); 7137#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7135#L18-1 assume !!(main_~i~0 > 0); 7133#L12 assume !(1 == main_~i~0); 7131#L12-2 assume !(10 == main_~i~0); 7129#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7127#L18-1 assume !!(main_~i~0 > 0); 7125#L12 assume !(1 == main_~i~0); 7123#L12-2 assume !(10 == main_~i~0); 7121#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7119#L18-1 assume !!(main_~i~0 > 0); 7117#L12 assume !(1 == main_~i~0); 7115#L12-2 assume !(10 == main_~i~0); 7113#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7111#L18-1 assume !!(main_~i~0 > 0); 7109#L12 assume !(1 == main_~i~0); 7107#L12-2 assume !(10 == main_~i~0); 7105#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7103#L18-1 assume !!(main_~i~0 > 0); 7101#L12 assume !(1 == main_~i~0); 7099#L12-2 assume !(10 == main_~i~0); 7097#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7095#L18-1 assume !!(main_~i~0 > 0); 7093#L12 assume !(1 == main_~i~0); 7091#L12-2 assume !(10 == main_~i~0); 7089#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7087#L18-1 assume !!(main_~i~0 > 0); 7085#L12 assume !(1 == main_~i~0); 7084#L12-2 assume !(10 == main_~i~0); 7082#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 7079#L18-1 assume !!(main_~i~0 > 0); 7080#L12 assume 1 == main_~i~0;main_~up~0 := 1; 7041#L12-2 [2019-11-25 08:52:58,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash 260754314, now seen corresponding path program 11 times [2019-11-25 08:52:58,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:58,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680098098] [2019-11-25 08:52:58,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 174 proven. 28 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:58,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680098098] [2019-11-25 08:52:58,466 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18128165] [2019-11-25 08:52:58,467 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:58,500 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2019-11-25 08:52:58,501 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:58,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:52:58,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 174 proven. 28 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:58,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:58,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-25 08:52:58,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050480975] [2019-11-25 08:52:58,509 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1093459752, now seen corresponding path program 11 times [2019-11-25 08:52:58,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:58,510 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489615446] [2019-11-25 08:52:58,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:58,521 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:58,734 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 51 [2019-11-25 08:52:58,743 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:58,743 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:58,743 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:58,743 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:58,744 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:58,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,744 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:58,744 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:58,744 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2019-11-25 08:52:58,744 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:58,744 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:58,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,810 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:58,810 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:58,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:58,817 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:58,817 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_14=1} Honda state: {v_rep~unnamed0~0~true_14=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:58,827 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,835 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:58,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:58,838 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:58,839 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:58,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:58,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:58,840 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:58,840 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:58,840 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,840 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:58,840 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:58,840 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration18_Loop [2019-11-25 08:52:58,840 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:58,840 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:58,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:58,895 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:58,895 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,899 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:58,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:58,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:58,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:58,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:58,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:58,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:52:58,905 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,913 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:58,914 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:58,914 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:58,914 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:58,914 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:58,914 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:58,915 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:58,915 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:52:58,917 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:58,919 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:52:58,919 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:58,922 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:58,922 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:58,922 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:58,922 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:52:58,924 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:52:58,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:58,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:58,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:58,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:52:58,959 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:58,991 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 [2019-11-25 08:52:58,991 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 197 transitions. cyclomatic complexity: 39 Second operand 8 states. [2019-11-25 08:52:59,188 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 197 transitions. cyclomatic complexity: 39. Second operand 8 states. Result 586 states and 700 transitions. Complement of second has 23 states. [2019-11-25 08:52:59,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2019-11-25 08:52:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-25 08:52:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 53 transitions. [2019-11-25 08:52:59,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 55 letters. Loop has 52 letters. [2019-11-25 08:52:59,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:59,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 107 letters. Loop has 52 letters. [2019-11-25 08:52:59,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:59,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 53 transitions. Stem has 55 letters. Loop has 104 letters. [2019-11-25 08:52:59,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:52:59,191 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 586 states and 700 transitions. [2019-11-25 08:52:59,194 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2019-11-25 08:52:59,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 586 states to 485 states and 570 transitions. [2019-11-25 08:52:59,198 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 115 [2019-11-25 08:52:59,198 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2019-11-25 08:52:59,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 485 states and 570 transitions. [2019-11-25 08:52:59,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:59,198 INFO L688 BuchiCegarLoop]: Abstraction has 485 states and 570 transitions. [2019-11-25 08:52:59,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states and 570 transitions. [2019-11-25 08:52:59,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 441. [2019-11-25 08:52:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-11-25 08:52:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 526 transitions. [2019-11-25 08:52:59,207 INFO L711 BuchiCegarLoop]: Abstraction has 441 states and 526 transitions. [2019-11-25 08:52:59,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:52:59,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:52:59,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:52:59,208 INFO L87 Difference]: Start difference. First operand 441 states and 526 transitions. Second operand 7 states. [2019-11-25 08:52:59,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:52:59,258 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2019-11-25 08:52:59,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-25 08:52:59,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 215 states and 248 transitions. [2019-11-25 08:52:59,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 57 [2019-11-25 08:52:59,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 215 states to 183 states and 216 transitions. [2019-11-25 08:52:59,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 72 [2019-11-25 08:52:59,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 72 [2019-11-25 08:52:59,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 183 states and 216 transitions. [2019-11-25 08:52:59,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:52:59,262 INFO L688 BuchiCegarLoop]: Abstraction has 183 states and 216 transitions. [2019-11-25 08:52:59,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states and 216 transitions. [2019-11-25 08:52:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2019-11-25 08:52:59,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2019-11-25 08:52:59,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 209 transitions. [2019-11-25 08:52:59,266 INFO L711 BuchiCegarLoop]: Abstraction has 176 states and 209 transitions. [2019-11-25 08:52:59,266 INFO L591 BuchiCegarLoop]: Abstraction has 176 states and 209 transitions. [2019-11-25 08:52:59,266 INFO L424 BuchiCegarLoop]: ======== Iteration 19============ [2019-11-25 08:52:59,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 176 states and 209 transitions. [2019-11-25 08:52:59,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 56 [2019-11-25 08:52:59,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:52:59,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:52:59,268 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [15, 13, 13, 9, 5, 2, 1, 1] [2019-11-25 08:52:59,268 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 9, 5, 1, 1] [2019-11-25 08:52:59,269 INFO L794 eck$LassoCheckResult]: Stem: 8953#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 8954#L18-1 assume !!(main_~i~0 > 0); 8986#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8985#L12-2 assume !(10 == main_~i~0); 8984#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8983#L18-1 assume !!(main_~i~0 > 0); 8982#L12 assume !(1 == main_~i~0); 8981#L12-2 assume !(10 == main_~i~0); 8980#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8979#L18-1 assume !!(main_~i~0 > 0); 8978#L12 assume !(1 == main_~i~0); 8977#L12-2 assume !(10 == main_~i~0); 8976#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8975#L18-1 assume !!(main_~i~0 > 0); 8974#L12 assume !(1 == main_~i~0); 8973#L12-2 assume !(10 == main_~i~0); 8972#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8971#L18-1 assume !!(main_~i~0 > 0); 8968#L12 assume !(1 == main_~i~0); 8970#L12-2 assume !(10 == main_~i~0); 8969#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 8967#L18-1 assume !!(main_~i~0 > 0); 8966#L12 assume !(1 == main_~i~0); 8965#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 8960#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8961#L18-1 assume !!(main_~i~0 > 0); 9029#L12 assume !(1 == main_~i~0); 9028#L12-2 assume !(10 == main_~i~0); 9027#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9026#L18-1 assume !!(main_~i~0 > 0); 9025#L12 assume !(1 == main_~i~0); 9024#L12-2 assume !(10 == main_~i~0); 9023#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9022#L18-1 assume !!(main_~i~0 > 0); 9021#L12 assume !(1 == main_~i~0); 9020#L12-2 assume !(10 == main_~i~0); 9019#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9018#L18-1 assume !!(main_~i~0 > 0); 9017#L12 assume !(1 == main_~i~0); 9016#L12-2 assume !(10 == main_~i~0); 9015#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9014#L18-1 assume !!(main_~i~0 > 0); 9013#L12 assume !(1 == main_~i~0); 9012#L12-2 assume !(10 == main_~i~0); 9011#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9010#L18-1 assume !!(main_~i~0 > 0); 9009#L12 assume !(1 == main_~i~0); 9008#L12-2 assume !(10 == main_~i~0); 9007#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9006#L18-1 assume !!(main_~i~0 > 0); 9005#L12 assume !(1 == main_~i~0); 9004#L12-2 assume !(10 == main_~i~0); 9003#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9002#L18-1 assume !!(main_~i~0 > 0); 9001#L12 assume !(1 == main_~i~0); 8995#L12-2 assume !(10 == main_~i~0); 8999#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8998#L18-1 assume !!(main_~i~0 > 0); 8993#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8994#L12-2 [2019-11-25 08:52:59,269 INFO L796 eck$LassoCheckResult]: Loop: 8994#L12-2 assume !(10 == main_~i~0); 9124#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9121#L18-1 assume !!(main_~i~0 > 0); 8996#L12 assume !(1 == main_~i~0); 8997#L12-2 assume !(10 == main_~i~0); 9123#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9122#L18-1 assume !!(main_~i~0 > 0); 9120#L12 assume !(1 == main_~i~0); 9119#L12-2 assume !(10 == main_~i~0); 9118#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9117#L18-1 assume !!(main_~i~0 > 0); 9115#L12 assume !(1 == main_~i~0); 9113#L12-2 assume !(10 == main_~i~0); 9111#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9109#L18-1 assume !!(main_~i~0 > 0); 9107#L12 assume !(1 == main_~i~0); 9105#L12-2 assume !(10 == main_~i~0); 9100#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 9103#L18-1 assume !!(main_~i~0 > 0); 9101#L12 assume !(1 == main_~i~0); 9099#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 8950#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 8963#L18-1 assume !!(main_~i~0 > 0); 9093#L12 assume !(1 == main_~i~0); 9091#L12-2 assume !(10 == main_~i~0); 9089#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9087#L18-1 assume !!(main_~i~0 > 0); 9085#L12 assume !(1 == main_~i~0); 9083#L12-2 assume !(10 == main_~i~0); 9081#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9079#L18-1 assume !!(main_~i~0 > 0); 9077#L12 assume !(1 == main_~i~0); 9075#L12-2 assume !(10 == main_~i~0); 9073#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9071#L18-1 assume !!(main_~i~0 > 0); 9069#L12 assume !(1 == main_~i~0); 9067#L12-2 assume !(10 == main_~i~0); 9065#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9063#L18-1 assume !!(main_~i~0 > 0); 9061#L12 assume !(1 == main_~i~0); 9059#L12-2 assume !(10 == main_~i~0); 9057#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9055#L18-1 assume !!(main_~i~0 > 0); 9053#L12 assume !(1 == main_~i~0); 9051#L12-2 assume !(10 == main_~i~0); 9049#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9047#L18-1 assume !!(main_~i~0 > 0); 9045#L12 assume !(1 == main_~i~0); 9043#L12-2 assume !(10 == main_~i~0); 9041#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9039#L18-1 assume !!(main_~i~0 > 0); 9038#L12 assume !(1 == main_~i~0); 9036#L12-2 assume !(10 == main_~i~0); 9034#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 9030#L18-1 assume !!(main_~i~0 > 0); 9031#L12 assume 1 == main_~i~0;main_~up~0 := 1; 8994#L12-2 [2019-11-25 08:52:59,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:59,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1566074253, now seen corresponding path program 12 times [2019-11-25 08:52:59,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:59,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057915316] [2019-11-25 08:52:59,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 211 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:59,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057915316] [2019-11-25 08:52:59,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645457041] [2019-11-25 08:52:59,319 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:52:59,363 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2019-11-25 08:52:59,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:52:59,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:52:59,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 211 proven. 45 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:59,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:52:59,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-25 08:52:59,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263562351] [2019-11-25 08:52:59,373 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:52:59,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1203416849, now seen corresponding path program 12 times [2019-11-25 08:52:59,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:52:59,374 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291387966] [2019-11-25 08:52:59,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:52:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:52:59,385 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:52:59,619 WARN L192 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 54 [2019-11-25 08:52:59,632 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:59,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:59,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:59,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:59,632 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:52:59,632 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,633 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:59,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:59,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2019-11-25 08:52:59,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:59,633 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:59,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:59,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:59,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:59,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:59,690 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:59,690 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:59,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:59,697 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:59,697 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_16=1} Honda state: {v_rep~unnamed0~0~true_16=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:59,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:59,704 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:59,704 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,708 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:59,708 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:59,711 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:52:59,711 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_16=0} Honda state: {v_rep~unnamed0~0~false_16=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:52:59,716 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:52:59,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:52:59,729 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:52:59,731 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:52:59,731 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:52:59,731 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:52:59,731 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:52:59,731 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:52:59,731 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:52:59,732 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:52:59,732 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration19_Loop [2019-11-25 08:52:59,732 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:52:59,732 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:52:59,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:59,742 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:59,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:59,750 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:52:59,799 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:52:59,800 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:59,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:59,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:59,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:59,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:59,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:59,810 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:59,810 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 94 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,814 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:59,822 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:59,824 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:59,824 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:59,824 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:59,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:59,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:59,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:59,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 95 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,827 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:59,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:59,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:59,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:59,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:59,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:59,841 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:52:59,842 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 96 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,845 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:59,854 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:52:59,856 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:52:59,856 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:52:59,856 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:52:59,856 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:52:59,856 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:52:59,857 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:52:59,857 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 97 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,860 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:52:59,862 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:52:59,862 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:52:59,870 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:52:59,871 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:52:59,871 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:52:59,871 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:52:59,873 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 98 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:52:59,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:52:59,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:59,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:52:59,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:52:59,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:52:59,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:52:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 228 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:52:59,972 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 [2019-11-25 08:52:59,973 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 176 states and 209 transitions. cyclomatic complexity: 39 Second operand 9 states. [2019-11-25 08:53:00,235 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 176 states and 209 transitions. cyclomatic complexity: 39. Second operand 9 states. Result 702 states and 836 transitions. Complement of second has 27 states. [2019-11-25 08:53:00,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2019-11-25 08:53:00,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-25 08:53:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 62 transitions. [2019-11-25 08:53:00,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 59 letters. Loop has 56 letters. [2019-11-25 08:53:00,236 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:00,236 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 115 letters. Loop has 56 letters. [2019-11-25 08:53:00,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:00,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 62 transitions. Stem has 59 letters. Loop has 112 letters. [2019-11-25 08:53:00,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:00,237 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 702 states and 836 transitions. [2019-11-25 08:53:00,240 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2019-11-25 08:53:00,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 702 states to 559 states and 656 transitions. [2019-11-25 08:53:00,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 123 [2019-11-25 08:53:00,244 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 131 [2019-11-25 08:53:00,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 559 states and 656 transitions. [2019-11-25 08:53:00,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:53:00,245 INFO L688 BuchiCegarLoop]: Abstraction has 559 states and 656 transitions. [2019-11-25 08:53:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states and 656 transitions. [2019-11-25 08:53:00,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 505. [2019-11-25 08:53:00,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-11-25 08:53:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 602 transitions. [2019-11-25 08:53:00,274 INFO L711 BuchiCegarLoop]: Abstraction has 505 states and 602 transitions. [2019-11-25 08:53:00,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:00,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:53:00,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:53:00,275 INFO L87 Difference]: Start difference. First operand 505 states and 602 transitions. Second operand 8 states. [2019-11-25 08:53:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:00,326 INFO L93 Difference]: Finished difference Result 235 states and 268 transitions. [2019-11-25 08:53:00,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:53:00,330 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 235 states and 268 transitions. [2019-11-25 08:53:00,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2019-11-25 08:53:00,331 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 235 states to 195 states and 228 transitions. [2019-11-25 08:53:00,331 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 76 [2019-11-25 08:53:00,332 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2019-11-25 08:53:00,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 195 states and 228 transitions. [2019-11-25 08:53:00,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:53:00,332 INFO L688 BuchiCegarLoop]: Abstraction has 195 states and 228 transitions. [2019-11-25 08:53:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states and 228 transitions. [2019-11-25 08:53:00,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 188. [2019-11-25 08:53:00,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2019-11-25 08:53:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 221 transitions. [2019-11-25 08:53:00,334 INFO L711 BuchiCegarLoop]: Abstraction has 188 states and 221 transitions. [2019-11-25 08:53:00,335 INFO L591 BuchiCegarLoop]: Abstraction has 188 states and 221 transitions. [2019-11-25 08:53:00,335 INFO L424 BuchiCegarLoop]: ======== Iteration 20============ [2019-11-25 08:53:00,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 188 states and 221 transitions. [2019-11-25 08:53:00,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 60 [2019-11-25 08:53:00,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:53:00,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:53:00,337 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [16, 14, 14, 9, 6, 2, 1, 1] [2019-11-25 08:53:00,337 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 9, 6, 1, 1] [2019-11-25 08:53:00,337 INFO L794 eck$LassoCheckResult]: Stem: 11159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 11160#L18-1 assume !!(main_~i~0 > 0); 11198#L12 assume 1 == main_~i~0;main_~up~0 := 1; 11197#L12-2 assume !(10 == main_~i~0); 11196#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11195#L18-1 assume !!(main_~i~0 > 0); 11194#L12 assume !(1 == main_~i~0); 11193#L12-2 assume !(10 == main_~i~0); 11192#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11191#L18-1 assume !!(main_~i~0 > 0); 11190#L12 assume !(1 == main_~i~0); 11189#L12-2 assume !(10 == main_~i~0); 11188#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11187#L18-1 assume !!(main_~i~0 > 0); 11186#L12 assume !(1 == main_~i~0); 11185#L12-2 assume !(10 == main_~i~0); 11184#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11183#L18-1 assume !!(main_~i~0 > 0); 11182#L12 assume !(1 == main_~i~0); 11181#L12-2 assume !(10 == main_~i~0); 11180#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11179#L18-1 assume !!(main_~i~0 > 0); 11176#L12 assume !(1 == main_~i~0); 11178#L12-2 assume !(10 == main_~i~0); 11177#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11175#L18-1 assume !!(main_~i~0 > 0); 11174#L12 assume !(1 == main_~i~0); 11173#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 11167#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11168#L18-1 assume !!(main_~i~0 > 0); 11241#L12 assume !(1 == main_~i~0); 11240#L12-2 assume !(10 == main_~i~0); 11239#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11238#L18-1 assume !!(main_~i~0 > 0); 11237#L12 assume !(1 == main_~i~0); 11236#L12-2 assume !(10 == main_~i~0); 11235#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11234#L18-1 assume !!(main_~i~0 > 0); 11233#L12 assume !(1 == main_~i~0); 11232#L12-2 assume !(10 == main_~i~0); 11231#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11230#L18-1 assume !!(main_~i~0 > 0); 11229#L12 assume !(1 == main_~i~0); 11228#L12-2 assume !(10 == main_~i~0); 11227#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11226#L18-1 assume !!(main_~i~0 > 0); 11225#L12 assume !(1 == main_~i~0); 11224#L12-2 assume !(10 == main_~i~0); 11223#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11222#L18-1 assume !!(main_~i~0 > 0); 11221#L12 assume !(1 == main_~i~0); 11220#L12-2 assume !(10 == main_~i~0); 11219#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11218#L18-1 assume !!(main_~i~0 > 0); 11217#L12 assume !(1 == main_~i~0); 11216#L12-2 assume !(10 == main_~i~0); 11215#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11214#L18-1 assume !!(main_~i~0 > 0); 11213#L12 assume !(1 == main_~i~0); 11206#L12-2 assume !(10 == main_~i~0); 11211#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11210#L18-1 assume !!(main_~i~0 > 0); 11204#L12 assume 1 == main_~i~0;main_~up~0 := 1; 11205#L12-2 [2019-11-25 08:53:00,337 INFO L796 eck$LassoCheckResult]: Loop: 11205#L12-2 assume !(10 == main_~i~0); 11336#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11334#L18-1 assume !!(main_~i~0 > 0); 11208#L12 assume !(1 == main_~i~0); 11209#L12-2 assume !(10 == main_~i~0); 11330#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11329#L18-1 assume !!(main_~i~0 > 0); 11328#L12 assume !(1 == main_~i~0); 11327#L12-2 assume !(10 == main_~i~0); 11326#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11325#L18-1 assume !!(main_~i~0 > 0); 11324#L12 assume !(1 == main_~i~0); 11323#L12-2 assume !(10 == main_~i~0); 11322#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11321#L18-1 assume !!(main_~i~0 > 0); 11320#L12 assume !(1 == main_~i~0); 11319#L12-2 assume !(10 == main_~i~0); 11318#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11317#L18-1 assume !!(main_~i~0 > 0); 11316#L12 assume !(1 == main_~i~0); 11315#L12-2 assume !(10 == main_~i~0); 11311#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 11313#L18-1 assume !!(main_~i~0 > 0); 11312#L12 assume !(1 == main_~i~0); 11310#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 11156#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11171#L18-1 assume !!(main_~i~0 > 0); 11165#L12 assume !(1 == main_~i~0); 11166#L12-2 assume !(10 == main_~i~0); 11302#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11300#L18-1 assume !!(main_~i~0 > 0); 11298#L12 assume !(1 == main_~i~0); 11296#L12-2 assume !(10 == main_~i~0); 11294#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11292#L18-1 assume !!(main_~i~0 > 0); 11290#L12 assume !(1 == main_~i~0); 11288#L12-2 assume !(10 == main_~i~0); 11286#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11284#L18-1 assume !!(main_~i~0 > 0); 11282#L12 assume !(1 == main_~i~0); 11280#L12-2 assume !(10 == main_~i~0); 11278#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11276#L18-1 assume !!(main_~i~0 > 0); 11274#L12 assume !(1 == main_~i~0); 11272#L12-2 assume !(10 == main_~i~0); 11270#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11268#L18-1 assume !!(main_~i~0 > 0); 11266#L12 assume !(1 == main_~i~0); 11264#L12-2 assume !(10 == main_~i~0); 11262#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11260#L18-1 assume !!(main_~i~0 > 0); 11258#L12 assume !(1 == main_~i~0); 11256#L12-2 assume !(10 == main_~i~0); 11254#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11252#L18-1 assume !!(main_~i~0 > 0); 11250#L12 assume !(1 == main_~i~0); 11248#L12-2 assume !(10 == main_~i~0); 11246#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 11242#L18-1 assume !!(main_~i~0 > 0); 11243#L12 assume 1 == main_~i~0;main_~up~0 := 1; 11205#L12-2 [2019-11-25 08:53:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:00,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1417622308, now seen corresponding path program 13 times [2019-11-25 08:53:00,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:00,338 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396444770] [2019-11-25 08:53:00,338 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:53:00,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396444770] [2019-11-25 08:53:00,399 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472689118] [2019-11-25 08:53:00,399 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:00,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:53:00,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 248 proven. 66 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:53:00,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:00,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-25 08:53:00,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270867461] [2019-11-25 08:53:00,448 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:53:00,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:00,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1315151238, now seen corresponding path program 13 times [2019-11-25 08:53:00,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:00,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85555396] [2019-11-25 08:53:00,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:00,467 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:00,722 WARN L192 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 57 [2019-11-25 08:53:00,741 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:53:00,742 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:53:00,742 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:53:00,742 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:53:00,742 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:53:00,742 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,742 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:53:00,742 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:53:00,742 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2019-11-25 08:53:00,742 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:53:00,743 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:53:00,743 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:00,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:00,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:00,763 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:00,803 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:53:00,803 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:00,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:00,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:00,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_18=1} Honda state: {v_rep~unnamed0~0~true_18=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 101 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:00,816 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:00,818 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:00,818 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,822 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:00,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:00,825 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:00,825 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_18=0} Honda state: {v_rep~unnamed0~0~false_18=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:00,830 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:53:00,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:00,839 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:53:00,841 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:53:00,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:53:00,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:53:00,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:53:00,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:53:00,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:53:00,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:53:00,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration20_Loop [2019-11-25 08:53:00,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:53:00,841 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:53:00,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:00,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:00,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:00,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:00,918 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:53:00,918 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 105 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:53:00,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:00,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:00,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:53:00,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:00,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:00,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:00,929 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:53:00,929 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 105 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,932 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-25 08:53:00,937 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:00,939 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:00,939 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:00,939 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:00,939 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:00,941 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:53:00,941 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 106 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,944 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,949 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:00,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:00,950 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:00,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:00,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:00,953 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:53:00,953 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:53:00,957 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,964 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:00,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:00,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:53:00,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:00,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:00,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:00,966 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:53:00,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:53:00,968 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:53:00,970 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:53:00,970 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:00,973 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:53:00,973 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:53:00,973 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:53:00,973 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:53:00,975 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:53:00,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:00,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:53:00,998 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:01,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-25 08:53:01,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 284 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:53:01,082 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2019-11-25 08:53:01,082 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 188 states and 221 transitions. cyclomatic complexity: 39 Second operand 10 states. [2019-11-25 08:53:01,379 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 188 states and 221 transitions. cyclomatic complexity: 39. Second operand 10 states. Result 834 states and 992 transitions. Complement of second has 31 states. [2019-11-25 08:53:01,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2019-11-25 08:53:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-25 08:53:01,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 71 transitions. [2019-11-25 08:53:01,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 63 letters. Loop has 60 letters. [2019-11-25 08:53:01,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:01,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 123 letters. Loop has 60 letters. [2019-11-25 08:53:01,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:01,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 71 transitions. Stem has 63 letters. Loop has 120 letters. [2019-11-25 08:53:01,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:01,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 834 states and 992 transitions. [2019-11-25 08:53:01,385 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2019-11-25 08:53:01,389 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 834 states to 641 states and 752 transitions. [2019-11-25 08:53:01,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 131 [2019-11-25 08:53:01,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 140 [2019-11-25 08:53:01,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 641 states and 752 transitions. [2019-11-25 08:53:01,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:53:01,390 INFO L688 BuchiCegarLoop]: Abstraction has 641 states and 752 transitions. [2019-11-25 08:53:01,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states and 752 transitions. [2019-11-25 08:53:01,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 577. [2019-11-25 08:53:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2019-11-25 08:53:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 688 transitions. [2019-11-25 08:53:01,399 INFO L711 BuchiCegarLoop]: Abstraction has 577 states and 688 transitions. [2019-11-25 08:53:01,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:01,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:53:01,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:53:01,400 INFO L87 Difference]: Start difference. First operand 577 states and 688 transitions. Second operand 9 states. [2019-11-25 08:53:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:01,460 INFO L93 Difference]: Finished difference Result 255 states and 288 transitions. [2019-11-25 08:53:01,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:53:01,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 255 states and 288 transitions. [2019-11-25 08:53:01,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 65 [2019-11-25 08:53:01,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 255 states to 207 states and 240 transitions. [2019-11-25 08:53:01,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2019-11-25 08:53:01,463 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 80 [2019-11-25 08:53:01,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 207 states and 240 transitions. [2019-11-25 08:53:01,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:53:01,463 INFO L688 BuchiCegarLoop]: Abstraction has 207 states and 240 transitions. [2019-11-25 08:53:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states and 240 transitions. [2019-11-25 08:53:01,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 200. [2019-11-25 08:53:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2019-11-25 08:53:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 233 transitions. [2019-11-25 08:53:01,467 INFO L711 BuchiCegarLoop]: Abstraction has 200 states and 233 transitions. [2019-11-25 08:53:01,467 INFO L591 BuchiCegarLoop]: Abstraction has 200 states and 233 transitions. [2019-11-25 08:53:01,467 INFO L424 BuchiCegarLoop]: ======== Iteration 21============ [2019-11-25 08:53:01,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 200 states and 233 transitions. [2019-11-25 08:53:01,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 64 [2019-11-25 08:53:01,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:53:01,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:53:01,470 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [17, 15, 15, 9, 7, 2, 1, 1] [2019-11-25 08:53:01,470 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 9, 7, 1, 1] [2019-11-25 08:53:01,470 INFO L794 eck$LassoCheckResult]: Stem: 13646#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 13647#L18-1 assume !!(main_~i~0 > 0); 13688#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13687#L12-2 assume !(10 == main_~i~0); 13686#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13685#L18-1 assume !!(main_~i~0 > 0); 13684#L12 assume !(1 == main_~i~0); 13683#L12-2 assume !(10 == main_~i~0); 13682#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13681#L18-1 assume !!(main_~i~0 > 0); 13680#L12 assume !(1 == main_~i~0); 13679#L12-2 assume !(10 == main_~i~0); 13678#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13677#L18-1 assume !!(main_~i~0 > 0); 13676#L12 assume !(1 == main_~i~0); 13675#L12-2 assume !(10 == main_~i~0); 13674#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13673#L18-1 assume !!(main_~i~0 > 0); 13672#L12 assume !(1 == main_~i~0); 13671#L12-2 assume !(10 == main_~i~0); 13670#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13669#L18-1 assume !!(main_~i~0 > 0); 13668#L12 assume !(1 == main_~i~0); 13667#L12-2 assume !(10 == main_~i~0); 13666#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13665#L18-1 assume !!(main_~i~0 > 0); 13662#L12 assume !(1 == main_~i~0); 13664#L12-2 assume !(10 == main_~i~0); 13663#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13661#L18-1 assume !!(main_~i~0 > 0); 13660#L12 assume !(1 == main_~i~0); 13659#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 13654#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13655#L18-1 assume !!(main_~i~0 > 0); 13826#L12 assume !(1 == main_~i~0); 13825#L12-2 assume !(10 == main_~i~0); 13824#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13823#L18-1 assume !!(main_~i~0 > 0); 13815#L12 assume !(1 == main_~i~0); 13812#L12-2 assume !(10 == main_~i~0); 13809#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13806#L18-1 assume !!(main_~i~0 > 0); 13803#L12 assume !(1 == main_~i~0); 13800#L12-2 assume !(10 == main_~i~0); 13797#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13794#L18-1 assume !!(main_~i~0 > 0); 13791#L12 assume !(1 == main_~i~0); 13788#L12-2 assume !(10 == main_~i~0); 13785#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13782#L18-1 assume !!(main_~i~0 > 0); 13779#L12 assume !(1 == main_~i~0); 13776#L12-2 assume !(10 == main_~i~0); 13773#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13770#L18-1 assume !!(main_~i~0 > 0); 13767#L12 assume !(1 == main_~i~0); 13764#L12-2 assume !(10 == main_~i~0); 13761#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13758#L18-1 assume !!(main_~i~0 > 0); 13755#L12 assume !(1 == main_~i~0); 13752#L12-2 assume !(10 == main_~i~0); 13749#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13746#L18-1 assume !!(main_~i~0 > 0); 13743#L12 assume !(1 == main_~i~0); 13731#L12-2 assume !(10 == main_~i~0); 13739#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13736#L18-1 assume !!(main_~i~0 > 0); 13730#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13642#L12-2 [2019-11-25 08:53:01,470 INFO L796 eck$LassoCheckResult]: Loop: 13642#L12-2 assume !(10 == main_~i~0); 13643#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13727#L18-1 assume !!(main_~i~0 > 0); 13726#L12 assume !(1 == main_~i~0); 13725#L12-2 assume !(10 == main_~i~0); 13724#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13723#L18-1 assume !!(main_~i~0 > 0); 13722#L12 assume !(1 == main_~i~0); 13721#L12-2 assume !(10 == main_~i~0); 13720#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13719#L18-1 assume !!(main_~i~0 > 0); 13718#L12 assume !(1 == main_~i~0); 13717#L12-2 assume !(10 == main_~i~0); 13716#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13715#L18-1 assume !!(main_~i~0 > 0); 13714#L12 assume !(1 == main_~i~0); 13713#L12-2 assume !(10 == main_~i~0); 13712#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13711#L18-1 assume !!(main_~i~0 > 0); 13710#L12 assume !(1 == main_~i~0); 13709#L12-2 assume !(10 == main_~i~0); 13708#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13707#L18-1 assume !!(main_~i~0 > 0); 13706#L12 assume !(1 == main_~i~0); 13705#L12-2 assume !(10 == main_~i~0); 13697#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 13702#L18-1 assume !!(main_~i~0 > 0); 13699#L12 assume !(1 == main_~i~0); 13696#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 13657#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13658#L18-1 assume !!(main_~i~0 > 0); 13652#L12 assume !(1 == main_~i~0); 13653#L12-2 assume !(10 == main_~i~0); 13695#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13818#L18-1 assume !!(main_~i~0 > 0); 13816#L12 assume !(1 == main_~i~0); 13813#L12-2 assume !(10 == main_~i~0); 13810#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13807#L18-1 assume !!(main_~i~0 > 0); 13804#L12 assume !(1 == main_~i~0); 13801#L12-2 assume !(10 == main_~i~0); 13798#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13795#L18-1 assume !!(main_~i~0 > 0); 13792#L12 assume !(1 == main_~i~0); 13789#L12-2 assume !(10 == main_~i~0); 13786#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13783#L18-1 assume !!(main_~i~0 > 0); 13780#L12 assume !(1 == main_~i~0); 13777#L12-2 assume !(10 == main_~i~0); 13774#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13771#L18-1 assume !!(main_~i~0 > 0); 13768#L12 assume !(1 == main_~i~0); 13765#L12-2 assume !(10 == main_~i~0); 13762#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13759#L18-1 assume !!(main_~i~0 > 0); 13756#L12 assume !(1 == main_~i~0); 13753#L12-2 assume !(10 == main_~i~0); 13750#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13747#L18-1 assume !!(main_~i~0 > 0); 13744#L12 assume !(1 == main_~i~0); 13733#L12-2 assume !(10 == main_~i~0); 13740#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 13737#L18-1 assume !!(main_~i~0 > 0); 13732#L12 assume 1 == main_~i~0;main_~up~0 := 1; 13642#L12-2 [2019-11-25 08:53:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:01,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1714987717, now seen corresponding path program 14 times [2019-11-25 08:53:01,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:01,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028596333] [2019-11-25 08:53:01,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 285 proven. 91 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:53:01,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028596333] [2019-11-25 08:53:01,551 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497741860] [2019-11-25 08:53:01,551 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:01,592 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:53:01,592 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:53:01,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-25 08:53:01,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:01,606 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 285 proven. 91 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:53:01,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:01,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-25 08:53:01,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758682578] [2019-11-25 08:53:01,608 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:53:01,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:01,608 INFO L82 PathProgramCache]: Analyzing trace with hash 590625123, now seen corresponding path program 14 times [2019-11-25 08:53:01,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:01,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169602195] [2019-11-25 08:53:01,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:01,622 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:01,861 WARN L192 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 60 [2019-11-25 08:53:01,868 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:53:01,868 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:53:01,868 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:53:01,868 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:53:01,868 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:53:01,868 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:01,868 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:53:01,868 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:53:01,868 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2019-11-25 08:53:01,868 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:53:01,868 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:53:01,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:01,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:01,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:01,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:01,917 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:53:01,917 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:01,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:01,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:01,923 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:01,923 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 112 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:01,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:01,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:01,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:01,930 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_20=0} Honda state: {v_rep~unnamed0~0~false_20=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:01,933 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:01,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:01,936 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:01,936 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_20=1} Honda state: {v_rep~unnamed0~0~true_20=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:01,940 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:01,940 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:01,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:53:01,947 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:01,950 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:53:01,952 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:53:01,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:53:01,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:53:01,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:53:01,952 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:53:01,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:01,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:53:01,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:53:01,952 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration21_Loop [2019-11-25 08:53:01,952 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:53:01,952 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:53:01,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:01,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:01,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:01,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:02,005 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:53:02,005 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:02,009 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:02,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:02,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:53:02,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:02,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:02,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:02,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:53:02,011 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:53:02,013 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:02,016 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:02,018 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:02,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:02,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:02,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:02,019 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:53:02,019 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:53:02,021 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 118 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:02,025 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:02,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:02,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:02,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:02,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:02,027 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:53:02,028 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:53:02,030 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:02,034 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:02,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:02,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:53:02,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:02,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:02,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:02,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:53:02,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:53:02,038 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:53:02,039 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-25 08:53:02,039 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:02,042 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:53:02,042 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:53:02,042 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:53:02,042 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:53:02,043 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:53:02,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:02,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:53:02,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:02,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:53:02,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:02,189 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 344 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:53:02,190 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2019-11-25 08:53:02,190 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 200 states and 233 transitions. cyclomatic complexity: 39 Second operand 11 states. [2019-11-25 08:53:02,586 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 200 states and 233 transitions. cyclomatic complexity: 39. Second operand 11 states. Result 982 states and 1168 transitions. Complement of second has 35 states. [2019-11-25 08:53:02,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 1 stem states 16 non-accepting loop states 1 accepting loop states [2019-11-25 08:53:02,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-25 08:53:02,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 80 transitions. [2019-11-25 08:53:02,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 67 letters. Loop has 64 letters. [2019-11-25 08:53:02,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:02,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 131 letters. Loop has 64 letters. [2019-11-25 08:53:02,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:02,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 80 transitions. Stem has 67 letters. Loop has 128 letters. [2019-11-25 08:53:02,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:02,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 982 states and 1168 transitions. [2019-11-25 08:53:02,595 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 68 [2019-11-25 08:53:02,599 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 982 states to 731 states and 858 transitions. [2019-11-25 08:53:02,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2019-11-25 08:53:02,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 149 [2019-11-25 08:53:02,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 731 states and 858 transitions. [2019-11-25 08:53:02,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:53:02,602 INFO L688 BuchiCegarLoop]: Abstraction has 731 states and 858 transitions. [2019-11-25 08:53:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states and 858 transitions. [2019-11-25 08:53:02,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 657. [2019-11-25 08:53:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 657 states. [2019-11-25 08:53:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 784 transitions. [2019-11-25 08:53:02,614 INFO L711 BuchiCegarLoop]: Abstraction has 657 states and 784 transitions. [2019-11-25 08:53:02,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:02,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:53:02,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:53:02,615 INFO L87 Difference]: Start difference. First operand 657 states and 784 transitions. Second operand 10 states. [2019-11-25 08:53:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:02,686 INFO L93 Difference]: Finished difference Result 275 states and 308 transitions. [2019-11-25 08:53:02,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:53:02,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 275 states and 308 transitions. [2019-11-25 08:53:02,688 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2019-11-25 08:53:02,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 275 states to 219 states and 252 transitions. [2019-11-25 08:53:02,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 84 [2019-11-25 08:53:02,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 84 [2019-11-25 08:53:02,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 219 states and 252 transitions. [2019-11-25 08:53:02,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:53:02,690 INFO L688 BuchiCegarLoop]: Abstraction has 219 states and 252 transitions. [2019-11-25 08:53:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states and 252 transitions. [2019-11-25 08:53:02,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 212. [2019-11-25 08:53:02,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-11-25 08:53:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 245 transitions. [2019-11-25 08:53:02,696 INFO L711 BuchiCegarLoop]: Abstraction has 212 states and 245 transitions. [2019-11-25 08:53:02,696 INFO L591 BuchiCegarLoop]: Abstraction has 212 states and 245 transitions. [2019-11-25 08:53:02,696 INFO L424 BuchiCegarLoop]: ======== Iteration 22============ [2019-11-25 08:53:02,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 212 states and 245 transitions. [2019-11-25 08:53:02,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 68 [2019-11-25 08:53:02,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:53:02,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:53:02,698 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [18, 16, 16, 9, 8, 2, 1, 1] [2019-11-25 08:53:02,698 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 9, 8, 1, 1] [2019-11-25 08:53:02,698 INFO L794 eck$LassoCheckResult]: Stem: 16438#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 16439#L18-1 assume !!(main_~i~0 > 0); 16484#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16483#L12-2 assume !(10 == main_~i~0); 16482#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16481#L18-1 assume !!(main_~i~0 > 0); 16480#L12 assume !(1 == main_~i~0); 16479#L12-2 assume !(10 == main_~i~0); 16478#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16477#L18-1 assume !!(main_~i~0 > 0); 16476#L12 assume !(1 == main_~i~0); 16475#L12-2 assume !(10 == main_~i~0); 16474#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16473#L18-1 assume !!(main_~i~0 > 0); 16472#L12 assume !(1 == main_~i~0); 16471#L12-2 assume !(10 == main_~i~0); 16470#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16469#L18-1 assume !!(main_~i~0 > 0); 16468#L12 assume !(1 == main_~i~0); 16467#L12-2 assume !(10 == main_~i~0); 16466#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16465#L18-1 assume !!(main_~i~0 > 0); 16464#L12 assume !(1 == main_~i~0); 16463#L12-2 assume !(10 == main_~i~0); 16462#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16461#L18-1 assume !!(main_~i~0 > 0); 16460#L12 assume !(1 == main_~i~0); 16459#L12-2 assume !(10 == main_~i~0); 16458#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16457#L18-1 assume !!(main_~i~0 > 0); 16454#L12 assume !(1 == main_~i~0); 16456#L12-2 assume !(10 == main_~i~0); 16455#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16453#L18-1 assume !!(main_~i~0 > 0); 16452#L12 assume !(1 == main_~i~0); 16451#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 16446#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16447#L18-1 assume !!(main_~i~0 > 0); 16621#L12 assume !(1 == main_~i~0); 16620#L12-2 assume !(10 == main_~i~0); 16619#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16618#L18-1 assume !!(main_~i~0 > 0); 16616#L12 assume !(1 == main_~i~0); 16613#L12-2 assume !(10 == main_~i~0); 16610#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16607#L18-1 assume !!(main_~i~0 > 0); 16604#L12 assume !(1 == main_~i~0); 16601#L12-2 assume !(10 == main_~i~0); 16598#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16595#L18-1 assume !!(main_~i~0 > 0); 16592#L12 assume !(1 == main_~i~0); 16589#L12-2 assume !(10 == main_~i~0); 16586#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16583#L18-1 assume !!(main_~i~0 > 0); 16580#L12 assume !(1 == main_~i~0); 16577#L12-2 assume !(10 == main_~i~0); 16574#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16571#L18-1 assume !!(main_~i~0 > 0); 16568#L12 assume !(1 == main_~i~0); 16565#L12-2 assume !(10 == main_~i~0); 16562#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16559#L18-1 assume !!(main_~i~0 > 0); 16556#L12 assume !(1 == main_~i~0); 16553#L12-2 assume !(10 == main_~i~0); 16550#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16547#L18-1 assume !!(main_~i~0 > 0); 16544#L12 assume !(1 == main_~i~0); 16533#L12-2 assume !(10 == main_~i~0); 16540#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16537#L18-1 assume !!(main_~i~0 > 0); 16532#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16434#L12-2 [2019-11-25 08:53:02,699 INFO L796 eck$LassoCheckResult]: Loop: 16434#L12-2 assume !(10 == main_~i~0); 16435#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16527#L18-1 assume !!(main_~i~0 > 0); 16526#L12 assume !(1 == main_~i~0); 16525#L12-2 assume !(10 == main_~i~0); 16524#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16523#L18-1 assume !!(main_~i~0 > 0); 16522#L12 assume !(1 == main_~i~0); 16521#L12-2 assume !(10 == main_~i~0); 16520#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16519#L18-1 assume !!(main_~i~0 > 0); 16518#L12 assume !(1 == main_~i~0); 16517#L12-2 assume !(10 == main_~i~0); 16516#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16515#L18-1 assume !!(main_~i~0 > 0); 16514#L12 assume !(1 == main_~i~0); 16513#L12-2 assume !(10 == main_~i~0); 16512#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16511#L18-1 assume !!(main_~i~0 > 0); 16510#L12 assume !(1 == main_~i~0); 16509#L12-2 assume !(10 == main_~i~0); 16508#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16507#L18-1 assume !!(main_~i~0 > 0); 16506#L12 assume !(1 == main_~i~0); 16505#L12-2 assume !(10 == main_~i~0); 16504#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16503#L18-1 assume !!(main_~i~0 > 0); 16502#L12 assume !(1 == main_~i~0); 16501#L12-2 assume !(10 == main_~i~0); 16493#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 16498#L18-1 assume !!(main_~i~0 > 0); 16495#L12 assume !(1 == main_~i~0); 16492#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 16449#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16450#L18-1 assume !!(main_~i~0 > 0); 16444#L12 assume !(1 == main_~i~0); 16445#L12-2 assume !(10 == main_~i~0); 16491#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16617#L18-1 assume !!(main_~i~0 > 0); 16615#L12 assume !(1 == main_~i~0); 16612#L12-2 assume !(10 == main_~i~0); 16609#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16606#L18-1 assume !!(main_~i~0 > 0); 16603#L12 assume !(1 == main_~i~0); 16600#L12-2 assume !(10 == main_~i~0); 16597#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16594#L18-1 assume !!(main_~i~0 > 0); 16591#L12 assume !(1 == main_~i~0); 16588#L12-2 assume !(10 == main_~i~0); 16585#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16582#L18-1 assume !!(main_~i~0 > 0); 16579#L12 assume !(1 == main_~i~0); 16576#L12-2 assume !(10 == main_~i~0); 16573#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16570#L18-1 assume !!(main_~i~0 > 0); 16567#L12 assume !(1 == main_~i~0); 16564#L12-2 assume !(10 == main_~i~0); 16561#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16558#L18-1 assume !!(main_~i~0 > 0); 16555#L12 assume !(1 == main_~i~0); 16552#L12-2 assume !(10 == main_~i~0); 16549#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16546#L18-1 assume !!(main_~i~0 > 0); 16543#L12 assume !(1 == main_~i~0); 16531#L12-2 assume !(10 == main_~i~0); 16539#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 16536#L18-1 assume !!(main_~i~0 > 0); 16530#L12 assume 1 == main_~i~0;main_~up~0 := 1; 16434#L12-2 [2019-11-25 08:53:02,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:02,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1278125010, now seen corresponding path program 15 times [2019-11-25 08:53:02,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:02,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272362009] [2019-11-25 08:53:02,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 322 proven. 120 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:53:02,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272362009] [2019-11-25 08:53:02,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714535689] [2019-11-25 08:53:02,816 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:02,859 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2019-11-25 08:53:02,859 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:53:02,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-25 08:53:02,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:02,883 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 322 proven. 226 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-25 08:53:02,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:02,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2019-11-25 08:53:02,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982763139] [2019-11-25 08:53:02,884 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-25 08:53:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:02,884 INFO L82 PathProgramCache]: Analyzing trace with hash -976981044, now seen corresponding path program 15 times [2019-11-25 08:53:02,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:02,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114507503] [2019-11-25 08:53:02,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:02,896 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:03,213 WARN L192 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 63 [2019-11-25 08:53:03,227 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:53:03,227 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:53:03,227 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:53:03,227 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:53:03,227 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-25 08:53:03,228 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,228 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:53:03,228 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:53:03,228 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2019-11-25 08:53:03,228 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:53:03,228 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:53:03,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:03,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:03,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:03,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:03,274 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:53:03,274 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:03,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:03,280 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:03,280 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:03,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:03,287 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:03,287 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_22=0} Honda state: {v_rep~unnamed0~0~false_22=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:03,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:03,294 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-25 08:53:03,294 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_22=1} Honda state: {v_rep~unnamed0~0~true_22=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-25 08:53:03,299 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,306 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-25 08:53:03,306 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-25 08:53:03,309 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-25 08:53:03,311 INFO L210 LassoAnalysis]: Preferences: [2019-11-25 08:53:03,311 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-25 08:53:03,311 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-25 08:53:03,311 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-25 08:53:03,311 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-25 08:53:03,311 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,311 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-25 08:53:03,311 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-25 08:53:03,311 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex08.c_Iteration22_Loop [2019-11-25 08:53:03,311 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-25 08:53:03,311 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-25 08:53:03,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:03,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:03,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:03,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-25 08:53:03,369 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-25 08:53:03,369 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,374 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:03,375 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:03,375 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:53:03,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:03,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:03,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:03,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:53:03,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:53:03,381 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:03,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:03,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:03,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:03,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:03,389 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-25 08:53:03,389 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-25 08:53:03,391 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,395 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-25 08:53:03,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-25 08:53:03,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-25 08:53:03,397 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-25 08:53:03,397 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-25 08:53:03,397 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-25 08:53:03,397 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-25 08:53:03,397 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-25 08:53:03,399 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-25 08:53:03,401 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-25 08:53:03,401 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_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/z3 Starting monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-25 08:53:03,404 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-25 08:53:03,404 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-25 08:53:03,404 INFO L510 LassoAnalysis]: Proved termination. [2019-11-25 08:53:03,404 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-11-25 08:53:03,405 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-25 08:53:03,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:03,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:53:03,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:03,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:53:03,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2019-11-25 08:53:03,540 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 10 loop predicates [2019-11-25 08:53:03,540 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 212 states and 245 transitions. cyclomatic complexity: 39 Second operand 12 states. [2019-11-25 08:53:03,977 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 212 states and 245 transitions. cyclomatic complexity: 39. Second operand 12 states. Result 1146 states and 1366 transitions. Complement of second has 39 states. [2019-11-25 08:53:03,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 1 stem states 18 non-accepting loop states 1 accepting loop states [2019-11-25 08:53:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-25 08:53:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 89 transitions. [2019-11-25 08:53:03,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 71 letters. Loop has 68 letters. [2019-11-25 08:53:03,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:03,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 139 letters. Loop has 68 letters. [2019-11-25 08:53:03,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:03,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 89 transitions. Stem has 71 letters. Loop has 136 letters. [2019-11-25 08:53:03,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-25 08:53:03,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1146 states and 1366 transitions. [2019-11-25 08:53:03,985 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 72 [2019-11-25 08:53:03,990 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1146 states to 829 states and 976 transitions. [2019-11-25 08:53:03,991 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 147 [2019-11-25 08:53:03,991 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 158 [2019-11-25 08:53:03,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 829 states and 976 transitions. [2019-11-25 08:53:03,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:53:03,991 INFO L688 BuchiCegarLoop]: Abstraction has 829 states and 976 transitions. [2019-11-25 08:53:03,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states and 976 transitions. [2019-11-25 08:53:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 745. [2019-11-25 08:53:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 745 states. [2019-11-25 08:53:04,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 890 transitions. [2019-11-25 08:53:04,003 INFO L711 BuchiCegarLoop]: Abstraction has 745 states and 890 transitions. [2019-11-25 08:53:04,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:53:04,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:53:04,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:53:04,004 INFO L87 Difference]: Start difference. First operand 745 states and 890 transitions. Second operand 12 states. [2019-11-25 08:53:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:04,069 INFO L93 Difference]: Finished difference Result 295 states and 328 transitions. [2019-11-25 08:53:04,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-25 08:53:04,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 295 states and 328 transitions. [2019-11-25 08:53:04,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2019-11-25 08:53:04,072 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 295 states to 231 states and 264 transitions. [2019-11-25 08:53:04,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 88 [2019-11-25 08:53:04,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 88 [2019-11-25 08:53:04,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 231 states and 264 transitions. [2019-11-25 08:53:04,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-25 08:53:04,073 INFO L688 BuchiCegarLoop]: Abstraction has 231 states and 264 transitions. [2019-11-25 08:53:04,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states and 264 transitions. [2019-11-25 08:53:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2019-11-25 08:53:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-11-25 08:53:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 257 transitions. [2019-11-25 08:53:04,076 INFO L711 BuchiCegarLoop]: Abstraction has 224 states and 257 transitions. [2019-11-25 08:53:04,076 INFO L591 BuchiCegarLoop]: Abstraction has 224 states and 257 transitions. [2019-11-25 08:53:04,077 INFO L424 BuchiCegarLoop]: ======== Iteration 23============ [2019-11-25 08:53:04,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 224 states and 257 transitions. [2019-11-25 08:53:04,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 72 [2019-11-25 08:53:04,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:53:04,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:53:04,079 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [19, 17, 17, 9, 9, 2, 1, 1] [2019-11-25 08:53:04,079 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 9, 9, 1, 1] [2019-11-25 08:53:04,079 INFO L794 eck$LassoCheckResult]: Stem: 19560#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 19561#L18-1 assume !!(main_~i~0 > 0); 19610#L12 assume 1 == main_~i~0;main_~up~0 := 1; 19609#L12-2 assume !(10 == main_~i~0); 19608#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19607#L18-1 assume !!(main_~i~0 > 0); 19606#L12 assume !(1 == main_~i~0); 19605#L12-2 assume !(10 == main_~i~0); 19604#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19603#L18-1 assume !!(main_~i~0 > 0); 19602#L12 assume !(1 == main_~i~0); 19601#L12-2 assume !(10 == main_~i~0); 19600#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19599#L18-1 assume !!(main_~i~0 > 0); 19598#L12 assume !(1 == main_~i~0); 19597#L12-2 assume !(10 == main_~i~0); 19596#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19595#L18-1 assume !!(main_~i~0 > 0); 19594#L12 assume !(1 == main_~i~0); 19593#L12-2 assume !(10 == main_~i~0); 19592#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19591#L18-1 assume !!(main_~i~0 > 0); 19590#L12 assume !(1 == main_~i~0); 19589#L12-2 assume !(10 == main_~i~0); 19588#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19587#L18-1 assume !!(main_~i~0 > 0); 19586#L12 assume !(1 == main_~i~0); 19585#L12-2 assume !(10 == main_~i~0); 19584#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19583#L18-1 assume !!(main_~i~0 > 0); 19582#L12 assume !(1 == main_~i~0); 19581#L12-2 assume !(10 == main_~i~0); 19580#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19579#L18-1 assume !!(main_~i~0 > 0); 19576#L12 assume !(1 == main_~i~0); 19578#L12-2 assume !(10 == main_~i~0); 19577#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19575#L18-1 assume !!(main_~i~0 > 0); 19574#L12 assume !(1 == main_~i~0); 19573#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 19568#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19569#L18-1 assume !!(main_~i~0 > 0); 19751#L12 assume !(1 == main_~i~0); 19750#L12-2 assume !(10 == main_~i~0); 19749#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19748#L18-1 assume !!(main_~i~0 > 0); 19746#L12 assume !(1 == main_~i~0); 19743#L12-2 assume !(10 == main_~i~0); 19740#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19737#L18-1 assume !!(main_~i~0 > 0); 19734#L12 assume !(1 == main_~i~0); 19731#L12-2 assume !(10 == main_~i~0); 19728#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19725#L18-1 assume !!(main_~i~0 > 0); 19722#L12 assume !(1 == main_~i~0); 19719#L12-2 assume !(10 == main_~i~0); 19716#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19713#L18-1 assume !!(main_~i~0 > 0); 19710#L12 assume !(1 == main_~i~0); 19707#L12-2 assume !(10 == main_~i~0); 19704#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19701#L18-1 assume !!(main_~i~0 > 0); 19698#L12 assume !(1 == main_~i~0); 19695#L12-2 assume !(10 == main_~i~0); 19692#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19689#L18-1 assume !!(main_~i~0 > 0); 19686#L12 assume !(1 == main_~i~0); 19683#L12-2 assume !(10 == main_~i~0); 19680#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19677#L18-1 assume !!(main_~i~0 > 0); 19674#L12 assume !(1 == main_~i~0); 19663#L12-2 assume !(10 == main_~i~0); 19670#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19667#L18-1 assume !!(main_~i~0 > 0); 19662#L12 assume 1 == main_~i~0;main_~up~0 := 1; 19556#L12-2 [2019-11-25 08:53:04,080 INFO L796 eck$LassoCheckResult]: Loop: 19556#L12-2 assume !(10 == main_~i~0); 19557#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19657#L18-1 assume !!(main_~i~0 > 0); 19656#L12 assume !(1 == main_~i~0); 19655#L12-2 assume !(10 == main_~i~0); 19654#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19653#L18-1 assume !!(main_~i~0 > 0); 19652#L12 assume !(1 == main_~i~0); 19651#L12-2 assume !(10 == main_~i~0); 19650#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19649#L18-1 assume !!(main_~i~0 > 0); 19648#L12 assume !(1 == main_~i~0); 19647#L12-2 assume !(10 == main_~i~0); 19646#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19645#L18-1 assume !!(main_~i~0 > 0); 19644#L12 assume !(1 == main_~i~0); 19643#L12-2 assume !(10 == main_~i~0); 19642#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19641#L18-1 assume !!(main_~i~0 > 0); 19640#L12 assume !(1 == main_~i~0); 19639#L12-2 assume !(10 == main_~i~0); 19638#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19637#L18-1 assume !!(main_~i~0 > 0); 19636#L12 assume !(1 == main_~i~0); 19635#L12-2 assume !(10 == main_~i~0); 19634#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19633#L18-1 assume !!(main_~i~0 > 0); 19632#L12 assume !(1 == main_~i~0); 19631#L12-2 assume !(10 == main_~i~0); 19630#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19629#L18-1 assume !!(main_~i~0 > 0); 19628#L12 assume !(1 == main_~i~0); 19627#L12-2 assume !(10 == main_~i~0); 19625#L15-1 assume 1 == main_~up~0;main_~i~0 := 1 + main_~i~0; 19623#L18-1 assume !!(main_~i~0 > 0); 19618#L12 assume !(1 == main_~i~0); 19619#L12-2 assume 10 == main_~i~0;main_~up~0 := 0; 19571#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19572#L18-1 assume !!(main_~i~0 > 0); 19566#L12 assume !(1 == main_~i~0); 19567#L12-2 assume !(10 == main_~i~0); 19617#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19747#L18-1 assume !!(main_~i~0 > 0); 19745#L12 assume !(1 == main_~i~0); 19742#L12-2 assume !(10 == main_~i~0); 19739#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19736#L18-1 assume !!(main_~i~0 > 0); 19733#L12 assume !(1 == main_~i~0); 19730#L12-2 assume !(10 == main_~i~0); 19727#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19724#L18-1 assume !!(main_~i~0 > 0); 19721#L12 assume !(1 == main_~i~0); 19718#L12-2 assume !(10 == main_~i~0); 19715#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19712#L18-1 assume !!(main_~i~0 > 0); 19709#L12 assume !(1 == main_~i~0); 19706#L12-2 assume !(10 == main_~i~0); 19703#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19700#L18-1 assume !!(main_~i~0 > 0); 19697#L12 assume !(1 == main_~i~0); 19694#L12-2 assume !(10 == main_~i~0); 19691#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19688#L18-1 assume !!(main_~i~0 > 0); 19685#L12 assume !(1 == main_~i~0); 19682#L12-2 assume !(10 == main_~i~0); 19679#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19676#L18-1 assume !!(main_~i~0 > 0); 19673#L12 assume !(1 == main_~i~0); 19661#L12-2 assume !(10 == main_~i~0); 19669#L15-1 assume !(1 == main_~up~0);main_~i~0 := main_~i~0 - 1; 19666#L18-1 assume !!(main_~i~0 > 0); 19660#L12 assume 1 == main_~i~0;main_~up~0 := 1; 19556#L12-2 [2019-11-25 08:53:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:04,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1439876841, now seen corresponding path program 16 times [2019-11-25 08:53:04,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:04,080 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262532458] [2019-11-25 08:53:04,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:04,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:04,093 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:04,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:04,094 INFO L82 PathProgramCache]: Analyzing trace with hash -680570443, now seen corresponding path program 16 times [2019-11-25 08:53:04,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:04,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502569453] [2019-11-25 08:53:04,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:04,105 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:04,106 INFO L82 PathProgramCache]: Analyzing trace with hash -569285429, now seen corresponding path program 17 times [2019-11-25 08:53:04,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:53:04,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142622770] [2019-11-25 08:53:04,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:53:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:53:04,135 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:53:04,482 WARN L192 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 66 [2019-11-25 08:53:04,789 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 69 [2019-11-25 08:53:04,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:53:04 BoogieIcfgContainer [2019-11-25 08:53:04,818 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:53:04,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:53:04,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:53:04,819 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:53:04,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:52:50" (3/4) ... [2019-11-25 08:53:04,822 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-25 08:53:04,884 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d51e3c8f-4d31-4f7e-ae70-21c5a7fba748/bin/uautomizer/witness.graphml [2019-11-25 08:53:04,884 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:53:04,885 INFO L168 Benchmark]: Toolchain (without parser) took 14855.23 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 400.0 MB). Free memory was 948.8 MB in the beginning and 901.5 MB in the end (delta: 47.3 MB). Peak memory consumption was 447.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:04,885 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:53:04,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -203.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:04,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.13 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. [2019-11-25 08:53:04,886 INFO L168 Benchmark]: Boogie Preprocessor took 14.71 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. [2019-11-25 08:53:04,886 INFO L168 Benchmark]: RCFGBuilder took 201.59 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:04,886 INFO L168 Benchmark]: BuchiAutomizer took 14202.02 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 239.1 MB). Free memory was 1.1 GB in the beginning and 914.9 MB in the end (delta: 223.7 MB). Peak memory consumption was 462.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:04,887 INFO L168 Benchmark]: Witness Printer took 65.32 ms. Allocated memory is still 1.4 GB. Free memory was 914.9 MB in the beginning and 901.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:53:04,888 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 331.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 948.8 MB in the beginning and 1.2 GB in the end (delta: -203.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.13 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 14.71 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 201.59 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 14202.02 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 239.1 MB). Free memory was 1.1 GB in the beginning and 914.9 MB in the end (delta: 223.7 MB). Peak memory consumption was 462.7 MB. Max. memory is 11.5 GB. * Witness Printer took 65.32 ms. Allocated memory is still 1.4 GB. Free memory was 914.9 MB in the beginning and 901.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 31 terminating modules (20 trivial, 11 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 3 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 21 and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 10 locations. One deterministic module has affine ranking function i and consists of 12 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 16 locations. One deterministic module has affine ranking function i and consists of 18 locations. One deterministic module has affine ranking function i and consists of 20 locations. 20 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 224 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.1s and 23 iterations. TraceHistogramMax:19. Analysis of lassos took 9.2s. Construction of modules took 1.4s. Büchi inclusion checks took 2.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 29. Automata minimization 0.1s AutomataMinimizationTime, 31 MinimizatonAttempts, 585 StatesRemovedByMinimization, 28 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 224 states and ocurred in iteration 22. Nontrivial modules had stage [11, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 952/2604 HoareTripleCheckerStatistics: 204 SDtfs, 627 SDslu, 6 SDs, 0 SdLazy, 1859 SolverSat, 210 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT1 conc0 concLT1 SILN0 SILU0 SILI9 SILT8 lasso1 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf100 lsp35 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq198 hnf89 smp97 dnf110 smp98 tf111 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 78ms VariablesStem: 1 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 16 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 32 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 11 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {up=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2804fcf9=0, \result=0, i=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 Loop: [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND TRUE i == 10 [L16] up = 0 [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND FALSE !(i == 1) [L15] COND FALSE !(i == 10) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE i > 0 [L12] COND TRUE i == 1 [L13] up = 1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...