./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Log.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Log.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/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 2d80b45a01c32727728c3a89e06c1e9a4dc4868b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 13:46:09,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:46:09,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:46:09,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:46:09,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:46:09,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:46:09,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:46:09,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:46:09,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:46:09,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:46:09,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:46:09,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:46:09,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:46:09,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:46:09,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:46:09,650 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:46:09,651 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:46:09,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:46:09,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:46:09,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:46:09,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:46:09,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:46:09,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:46:09,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:46:09,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:46:09,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:46:09,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:46:09,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:46:09,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:46:09,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:46:09,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:46:09,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:46:09,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:46:09,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:46:09,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:46:09,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:46:09,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:46:09,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:46:09,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:46:09,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:46:09,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:46:09,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 13:46:09,682 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:46:09,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:46:09,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 13:46:09,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 13:46:09,684 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 13:46:09,684 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 13:46:09,684 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 13:46:09,684 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 13:46:09,684 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 13:46:09,684 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 13:46:09,684 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 13:46:09,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:46:09,685 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:46:09,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:46:09,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:46:09,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 13:46:09,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 13:46:09,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 13:46:09,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:46:09,686 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 13:46:09,686 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:46:09,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 13:46:09,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:46:09,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 13:46:09,686 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 13:46:09,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:46:09,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 13:46:09,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:46:09,687 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 13:46:09,687 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 13:46:09,687 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_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/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 -> 2d80b45a01c32727728c3a89e06c1e9a4dc4868b [2019-12-07 13:46:09,800 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:46:09,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:46:09,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:46:09,814 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:46:09,815 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:46:09,815 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Log.c [2019-12-07 13:46:09,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/data/1cb8664f5/6e413cda59264ce49f8df56c36ea0b6c/FLAGbb1fb8c2c [2019-12-07 13:46:10,188 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:46:10,189 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/sv-benchmarks/c/termination-restricted-15/Log.c [2019-12-07 13:46:10,192 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/data/1cb8664f5/6e413cda59264ce49f8df56c36ea0b6c/FLAGbb1fb8c2c [2019-12-07 13:46:10,201 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/data/1cb8664f5/6e413cda59264ce49f8df56c36ea0b6c [2019-12-07 13:46:10,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:46:10,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:46:10,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:46:10,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:46:10,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:46:10,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df81818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10, skipping insertion in model container [2019-12-07 13:46:10,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:46:10,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:46:10,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:46:10,330 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:46:10,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:46:10,381 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:46:10,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10 WrapperNode [2019-12-07 13:46:10,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:46:10,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:46:10,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:46:10,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:46:10,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,401 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:46:10,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:46:10,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:46:10,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:46:10,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... [2019-12-07 13:46:10,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:46:10,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:46:10,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:46:10,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:46:10,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:10,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:46:10,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:46:10,537 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:46:10,537 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 13:46:10,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:46:10 BoogieIcfgContainer [2019-12-07 13:46:10,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:46:10,538 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 13:46:10,539 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 13:46:10,541 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 13:46:10,541 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:46:10,541 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 01:46:10" (1/3) ... [2019-12-07 13:46:10,542 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34589a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:46:10, skipping insertion in model container [2019-12-07 13:46:10,542 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:46:10,542 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:46:10" (2/3) ... [2019-12-07 13:46:10,542 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34589a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 01:46:10, skipping insertion in model container [2019-12-07 13:46:10,542 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 13:46:10,542 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:46:10" (3/3) ... [2019-12-07 13:46:10,543 INFO L371 chiAutomizerObserver]: Analyzing ICFG Log.c [2019-12-07 13:46:10,571 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 13:46:10,572 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 13:46:10,572 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 13:46:10,572 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:46:10,572 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:46:10,572 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 13:46:10,572 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:46:10,572 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 13:46:10,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 13:46:10,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 13:46:10,593 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:46:10,593 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:46:10,597 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:46:10,597 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:46:10,597 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 13:46:10,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-12-07 13:46:10,598 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-12-07 13:46:10,598 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:46:10,598 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:46:10,598 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:46:10,598 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 13:46:10,603 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 6#L13-2true [2019-12-07 13:46:10,603 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 3#L17-2true assume !(main_~xtmp~0 > 1); 10#L17-3true main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 6#L13-2true [2019-12-07 13:46:10,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:10,607 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 13:46:10,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:10,613 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806218568] [2019-12-07 13:46:10,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:10,675 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:46:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:10,676 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-12-07 13:46:10,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:10,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133301808] [2019-12-07 13:46:10,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:46:10,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133301808] [2019-12-07 13:46:10,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:46:10,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:46:10,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478967518] [2019-12-07 13:46:10,718 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 13:46:10,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:46:10,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:46:10,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:46:10,730 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-12-07 13:46:10,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:46:10,743 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-12-07 13:46:10,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:46:10,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-12-07 13:46:10,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 13:46:10,747 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2019-12-07 13:46:10,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-12-07 13:46:10,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 13:46:10,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2019-12-07 13:46:10,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 13:46:10,748 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-12-07 13:46:10,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2019-12-07 13:46:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-12-07 13:46:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 13:46:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2019-12-07 13:46:10,767 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-12-07 13:46:10,767 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-12-07 13:46:10,767 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 13:46:10,767 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2019-12-07 13:46:10,767 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 13:46:10,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:46:10,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:46:10,768 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 13:46:10,768 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 13:46:10,768 INFO L794 eck$LassoCheckResult]: Stem: 28#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 29#L13-2 [2019-12-07 13:46:10,768 INFO L796 eck$LassoCheckResult]: Loop: 29#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 26#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 27#L17-2 assume !(main_~xtmp~0 > 1); 30#L17-3 main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 29#L13-2 [2019-12-07 13:46:10,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:10,768 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-12-07 13:46:10,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:10,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740826180] [2019-12-07 13:46:10,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:10,773 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:46:10,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:10,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2019-12-07 13:46:10,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:10,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66658961] [2019-12-07 13:46:10,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:10,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:10,786 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:46:10,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:10,786 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2019-12-07 13:46:10,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:10,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821680787] [2019-12-07 13:46:10,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:10,799 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:46:10,870 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:46:10,871 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:46:10,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:46:10,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:46:10,871 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:46:10,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:10,872 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:46:10,872 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:46:10,872 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2019-12-07 13:46:10,872 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:46:10,872 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:46:10,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:10,892 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:10,895 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:10,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:10,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:10,976 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:46:10,976 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:10,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:10,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:10,989 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:46:10,989 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_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:10,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:10,993 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:10,997 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:46:10,997 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_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:11,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:11,005 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:46:11,005 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=1} Honda state: {ULTIMATE.start_main_~restmp~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:11,009 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:46:11,015 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:11,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:46:11,028 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0=0} Honda state: {ULTIMATE.start_main_~res~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0=4}, {ULTIMATE.start_main_~res~0=-4}, {ULTIMATE.start_main_~res~0=1}] Lambdas: [2, 1, 1] Nus: [1, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:11,032 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:46:11,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:11,446 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:46:11,448 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:46:11,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:46:11,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:46:11,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:46:11,448 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:46:11,448 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,448 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:46:11,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:46:11,449 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration2_Loop [2019-12-07 13:46:11,449 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:46:11,449 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:46:11,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,455 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,508 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:46:11,511 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:11,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:11,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:11,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:11,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:11,520 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:46:11,520 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:46:11,524 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,528 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:11,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:11,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:11,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:11,530 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:11,532 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:46:11,532 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:46:11,535 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,539 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:11,540 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:11,540 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:46:11,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:11,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:11,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:11,541 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:46:11,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:46:11,543 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,547 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:11,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:11,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:46:11,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:11,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:11,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:11,549 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:46:11,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:46:11,552 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:46:11,558 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 13:46:11,559 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,566 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:46:11,567 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:46:11,567 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:46:11,567 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-12-07 13:46:11,570 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:46:11,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:11,589 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:46:11,590 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:11,597 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 13:46:11,597 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:46:11,618 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-12-07 13:46:11,619 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 4 states. [2019-12-07 13:46:11,660 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 6 transitions. cyclomatic complexity: 2. Second operand 4 states. Result 9 states and 12 transitions. Complement of second has 6 states. [2019-12-07 13:46:11,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 13:46:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 13:46:11,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2019-12-07 13:46:11,663 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 13:46:11,663 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:11,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 13:46:11,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:11,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 1 letters. Loop has 8 letters. [2019-12-07 13:46:11,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:11,664 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 12 transitions. [2019-12-07 13:46:11,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 13:46:11,666 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 11 transitions. [2019-12-07 13:46:11,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 13:46:11,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 13:46:11,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 13:46:11,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:46:11,666 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 13:46:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 13:46:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-12-07 13:46:11,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 13:46:11,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 13:46:11,668 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 13:46:11,668 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 13:46:11,668 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 13:46:11,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 13:46:11,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 13:46:11,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:46:11,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:46:11,669 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 13:46:11,669 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 13:46:11,669 INFO L794 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 85#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 81#L17-2 [2019-12-07 13:46:11,669 INFO L796 eck$LassoCheckResult]: Loop: 81#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 81#L17-2 [2019-12-07 13:46:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:11,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 13:46:11,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:11,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856682913] [2019-12-07 13:46:11,670 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:11,677 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:46:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:11,677 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-12-07 13:46:11,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:11,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274830266] [2019-12-07 13:46:11,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:11,684 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:46:11,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:11,684 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-12-07 13:46:11,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:11,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177071726] [2019-12-07 13:46:11,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:11,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:11,694 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:46:11,705 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:46:11,705 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:46:11,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:46:11,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:46:11,706 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:46:11,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:46:11,706 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:46:11,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2019-12-07 13:46:11,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:46:11,706 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:46:11,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,714 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,752 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:46:11,753 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,756 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:11,756 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:11,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:46:11,761 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_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:11,765 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:46:11,771 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:11,786 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:46:11,786 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~restmp~0=0} Honda state: {ULTIMATE.start_main_~restmp~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~restmp~0=4}, {ULTIMATE.start_main_~restmp~0=-3}, {ULTIMATE.start_main_~restmp~0=0}] Lambdas: [1, 1, 2] Nus: [0, 1] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:11,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:11,793 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:46:11,793 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_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:11,798 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:46:11,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:11,811 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:46:11,812 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:46:11,812 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:46:11,812 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:46:11,812 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:46:11,812 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:46:11,813 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,813 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:46:11,813 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:46:11,813 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration3_Loop [2019-12-07 13:46:11,813 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:46:11,813 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:46:11,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,857 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:46:11,857 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,860 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 [2019-12-07 13:46:11,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:11,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:11,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:11,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:11,864 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:46:11,865 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:46:11,868 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,872 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:11,873 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:11,873 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:46:11,873 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:11,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:11,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:11,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:46:11,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:46:11,876 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,880 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:11,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:11,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:11,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:11,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:11,884 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:46:11,884 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:46:11,888 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,892 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:11,893 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:11,893 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:46:11,893 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:11,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:11,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:11,895 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:46:11,895 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:46:11,897 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:46:11,900 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 13:46:11,900 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_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,909 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:46:11,909 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:46:11,909 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:46:11,909 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-12-07 13:46:11,910 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:46:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:11,923 INFO L264 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:46:11,923 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:11,926 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:46:11,926 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:11,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:46:11,927 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 13:46:11,927 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-12-07 13:46:11,936 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 15 states and 20 transitions. Complement of second has 5 states. [2019-12-07 13:46:11,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 13:46:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 13:46:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 13:46:11,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-12-07 13:46:11,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:11,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-12-07 13:46:11,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:11,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 13:46:11,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:11,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2019-12-07 13:46:11,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 13:46:11,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 15 transitions. [2019-12-07 13:46:11,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-12-07 13:46:11,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-12-07 13:46:11,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2019-12-07 13:46:11,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 13:46:11,940 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-12-07 13:46:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2019-12-07 13:46:11,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 7. [2019-12-07 13:46:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 13:46:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-12-07 13:46:11,942 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 13:46:11,942 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 13:46:11,942 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 13:46:11,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-12-07 13:46:11,942 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 13:46:11,942 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 13:46:11,942 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 13:46:11,943 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-12-07 13:46:11,943 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 13:46:11,943 INFO L794 eck$LassoCheckResult]: Stem: 135#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~x~0, main_~xtmp~0, main_~res~0, main_~restmp~0;havoc main_~x~0;havoc main_~xtmp~0;havoc main_~res~0;havoc main_~restmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~res~0 := 0; 136#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 133#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 134#L17-2 assume !(main_~xtmp~0 > 1); 138#L17-3 main_~x~0 := main_~xtmp~0;main_~res~0 := 1 + main_~res~0; 137#L13-2 assume !!(main_~x~0 > 1);main_~xtmp~0 := main_~x~0;main_~restmp~0 := 0; 132#L17-2 [2019-12-07 13:46:11,943 INFO L796 eck$LassoCheckResult]: Loop: 132#L17-2 assume !!(main_~xtmp~0 > 1);main_~xtmp~0 := main_~xtmp~0 - 2;main_~restmp~0 := 1 + main_~restmp~0; 132#L17-2 [2019-12-07 13:46:11,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:11,943 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 2 times [2019-12-07 13:46:11,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:11,943 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167706043] [2019-12-07 13:46:11,943 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 13:46:11,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167706043] [2019-12-07 13:46:11,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:46:11,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:46:11,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327447265] [2019-12-07 13:46:11,963 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 13:46:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:11,963 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-12-07 13:46:11,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 13:46:11,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687147857] [2019-12-07 13:46:11,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:46:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:46:11,968 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 13:46:11,978 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:46:11,978 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:46:11,978 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:46:11,978 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:46:11,978 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 13:46:11,978 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:11,978 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:46:11,978 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:46:11,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2019-12-07 13:46:11,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:46:11,979 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:46:11,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,988 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:11,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:12,040 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:46:12,040 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:12,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:12,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:12,047 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 13:46:12,047 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_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:12,051 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 13:46:12,051 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:12,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 13:46:12,058 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 13:46:12,062 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 13:46:12,064 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 13:46:12,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 13:46:12,064 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 13:46:12,064 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 13:46:12,064 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 13:46:12,064 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:12,064 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 13:46:12,064 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 13:46:12,064 INFO L133 ssoRankerPreferences]: Filename of dumped script: Log.c_Iteration4_Loop [2019-12-07 13:46:12,064 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 13:46:12,065 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 13:46:12,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:12,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:12,071 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:12,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 13:46:12,101 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 13:46:12,101 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:12,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:12,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:12,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:12,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:12,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:12,106 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 13:46:12,107 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 13:46:12,109 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:12,119 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 13:46:12,120 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 13:46:12,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 13:46:12,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 13:46:12,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 13:46:12,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 13:46:12,121 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 13:46:12,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 13:46:12,123 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 13:46:12,125 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 13:46:12,125 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_9ec4729d-3b60-4ed7-83c4-a3e4eb14c785/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 13:46:12,128 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 13:46:12,128 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 13:46:12,128 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 13:46:12,128 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-12-07 13:46:12,130 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 13:46:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:12,143 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:46:12,143 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:12,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:12,146 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:46:12,146 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:46:12,146 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 13:46:12,146 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 13:46:12,153 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2019-12-07 13:46:12,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 13:46:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 13:46:12,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 13:46:12,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2019-12-07 13:46:12,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:12,154 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 13:46:12,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:12,165 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:46:12,165 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:12,168 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:46:12,168 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:12,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:46:12,168 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 13:46:12,168 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 13:46:12,174 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2019-12-07 13:46:12,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 13:46:12,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 13:46:12,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-12-07 13:46:12,174 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2019-12-07 13:46:12,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:12,174 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 13:46:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:46:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:12,185 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 13:46:12,186 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:46:12,188 WARN L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 13:46:12,188 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:46:12,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:46:12,188 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-12-07 13:46:12,189 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-12-07 13:46:12,196 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 10 states and 12 transitions. Complement of second has 4 states. [2019-12-07 13:46:12,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-12-07 13:46:12,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-12-07 13:46:12,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-12-07 13:46:12,197 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2019-12-07 13:46:12,197 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:12,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2019-12-07 13:46:12,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:12,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 13:46:12,198 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 13:46:12,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-12-07 13:46:12,199 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 13:46:12,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2019-12-07 13:46:12,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 13:46:12,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 13:46:12,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 13:46:12,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 13:46:12,199 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:46:12,199 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:46:12,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 13:46:12,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:46:12,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:46:12,199 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2019-12-07 13:46:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:46:12,199 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-12-07 13:46:12,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 13:46:12,200 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-12-07 13:46:12,200 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 13:46:12,200 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 13:46:12,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 13:46:12,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 13:46:12,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 13:46:12,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 13:46:12,200 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:46:12,200 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:46:12,200 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 13:46:12,200 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 13:46:12,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 13:46:12,200 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 13:46:12,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 13:46:12,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 01:46:12 BoogieIcfgContainer [2019-12-07 13:46:12,204 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 13:46:12,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:46:12,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:46:12,205 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:46:12,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:46:10" (3/4) ... [2019-12-07 13:46:12,207 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:46:12,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:46:12,208 INFO L168 Benchmark]: Toolchain (without parser) took 2004.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 943.3 MB in the beginning and 1.0 GB in the end (delta: -82.7 MB). Peak memory consumption was 8.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:46:12,209 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:46:12,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 13:46:12,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:46:12,210 INFO L168 Benchmark]: Boogie Preprocessor took 11.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 13:46:12,211 INFO L168 Benchmark]: RCFGBuilder took 124.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-12-07 13:46:12,211 INFO L168 Benchmark]: BuchiAutomizer took 1665.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:46:12,212 INFO L168 Benchmark]: Witness Printer took 2.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:46:12,214 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 959.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.51 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 90.7 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 124.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1665.87 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * Witness Printer took 2.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (2 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 6 SDs, 0 SdLazy, 35 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf93 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...