./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.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_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 e09e2fe0d9f978fd259d1d805e514754ab2def67 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 17:22:54,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:22:54,413 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:22:54,420 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:22:54,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:22:54,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:22:54,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:22:54,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:22:54,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:22:54,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:22:54,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:22:54,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:22:54,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:22:54,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:22:54,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:22:54,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:22:54,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:22:54,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:22:54,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:22:54,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:22:54,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:22:54,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:22:54,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:22:54,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:22:54,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:22:54,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:22:54,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:22:54,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:22:54,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:22:54,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:22:54,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:22:54,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:22:54,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:22:54,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:22:54,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:22:54,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:22:54,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:22:54,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:22:54,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:22:54,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:22:54,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:22:54,444 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 17:22:54,455 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:22:54,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:22:54,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:22:54,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:22:54,456 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:22:54,457 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:22:54,457 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:22:54,457 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:22:54,457 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:22:54,457 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:22:54,457 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:22:54,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:22:54,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:22:54,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:22:54,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:22:54,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:22:54,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:22:54,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:22:54,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:22:54,458 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:22:54,458 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:22:54,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:22:54,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:22:54,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:22:54,459 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:22:54,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:22:54,459 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:22:54,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:22:54,459 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:22:54,460 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:22:54,460 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_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 -> e09e2fe0d9f978fd259d1d805e514754ab2def67 [2019-12-07 17:22:54,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:22:54,574 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:22:54,577 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:22:54,578 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:22:54,578 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:22:54,579 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2019-12-07 17:22:54,623 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/data/3ce058b66/f25fee2a31664b318af605290dcf0d01/FLAG483c16753 [2019-12-07 17:22:55,019 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:22:55,019 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig4.c [2019-12-07 17:22:55,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/data/3ce058b66/f25fee2a31664b318af605290dcf0d01/FLAG483c16753 [2019-12-07 17:22:55,032 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/bin/uautomizer/data/3ce058b66/f25fee2a31664b318af605290dcf0d01 [2019-12-07 17:22:55,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:22:55,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:22:55,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:22:55,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:22:55,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:22:55,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d1866f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55, skipping insertion in model container [2019-12-07 17:22:55,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:22:55,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:22:55,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:22:55,151 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:22:55,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:22:55,201 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:22:55,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55 WrapperNode [2019-12-07 17:22:55,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:22:55,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:22:55,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:22:55,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:22:55,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:22:55,221 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:22:55,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:22:55,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:22:55,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... [2019-12-07 17:22:55,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:22:55,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:22:55,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:22:55,233 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:22:55,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:22:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:22:55,356 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:22:55,357 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 17:22:55,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:22:55 BoogieIcfgContainer [2019-12-07 17:22:55,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:22:55,358 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:22:55,358 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:22:55,360 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:22:55,361 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:22:55,361 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:22:55" (1/3) ... [2019-12-07 17:22:55,361 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ad952d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:22:55, skipping insertion in model container [2019-12-07 17:22:55,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:22:55,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:22:55" (2/3) ... [2019-12-07 17:22:55,362 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@ad952d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:22:55, skipping insertion in model container [2019-12-07 17:22:55,362 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:22:55,362 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:22:55" (3/3) ... [2019-12-07 17:22:55,363 INFO L371 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig4.c [2019-12-07 17:22:55,391 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:22:55,392 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:22:55,392 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:22:55,392 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:22:55,392 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:22:55,392 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:22:55,392 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:22:55,392 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:22:55,400 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 17:22:55,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 17:22:55,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:55,413 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:55,417 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 17:22:55,417 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 17:22:55,417 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:22:55,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-12-07 17:22:55,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 17:22:55,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:55,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:55,418 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-12-07 17:22:55,419 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 17:22:55,423 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L18-2true [2019-12-07 17:22:55,423 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 7#L18true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 5#L18-2true [2019-12-07 17:22:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-12-07 17:22:55,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:55,433 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665574728] [2019-12-07 17:22:55,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,497 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:55,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:55,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-12-07 17:22:55,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:55,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976928752] [2019-12-07 17:22:55,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,507 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:55,508 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-12-07 17:22:55,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:55,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561395868] [2019-12-07 17:22:55,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,518 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:55,556 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:55,557 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:55,557 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:55,557 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:55,557 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:22:55,557 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:55,557 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:55,557 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:55,558 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2019-12-07 17:22:55,558 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:55,558 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:55,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:55,580 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 17:22:55,583 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 17:22:55,586 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 17:22:55,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:55,662 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:55,663 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:55,668 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:55,677 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:22:55,677 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_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,681 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:55,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:55,685 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:22:55,685 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_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:55,689 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:55,693 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:22:55,693 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:55,697 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:22:55,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:55,709 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:22:55,710 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:55,710 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:55,710 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:55,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:55,710 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:22:55,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:55,711 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:55,711 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:55,711 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration1_Loop [2019-12-07 17:22:55,711 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:55,711 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:55,712 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 17:22:55,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:55,718 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 17:22:55,720 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 17:22:55,724 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 17:22:55,771 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:55,774 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,778 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 17:22:55,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:55,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:55,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:55,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:55,784 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:55,784 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:55,788 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,792 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 17:22:55,793 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:55,793 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:55,793 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:55,793 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:55,795 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:55,795 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:55,799 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,802 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 17:22:55,803 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:55,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:55,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:55,804 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-12-07 17:22:55,804 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:55,805 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-12-07 17:22:55,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:55,807 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,811 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 17:22:55,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:55,812 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:55,812 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:55,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:55,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:55,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:55,814 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:55,816 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:22:55,820 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:22:55,820 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_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:55,823 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:22:55,824 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:22:55,824 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:22:55,824 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 17:22:55,827 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:22:55,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:55,850 INFO L264 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:22:55,851 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:55,858 INFO L264 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:22:55,858 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:55,869 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 17:22:55,880 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:22:55,880 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2019-12-07 17:22:55,915 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 7 states. [2019-12-07 17:22:55,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 17:22:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:55,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-12-07 17:22:55,918 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2019-12-07 17:22:55,918 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:55,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2019-12-07 17:22:55,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:55,919 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2019-12-07 17:22:55,919 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:55,920 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2019-12-07 17:22:55,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 17:22:55,925 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2019-12-07 17:22:55,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 17:22:55,926 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-12-07 17:22:55,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2019-12-07 17:22:55,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:22:55,927 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-12-07 17:22:55,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2019-12-07 17:22:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2019-12-07 17:22:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 17:22:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2019-12-07 17:22:55,944 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 17:22:55,944 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2019-12-07 17:22:55,945 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:22:55,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2019-12-07 17:22:55,945 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 17:22:55,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:55,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:55,946 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 17:22:55,946 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 17:22:55,946 INFO L794 eck$LassoCheckResult]: Stem: 71#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 72#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2019-12-07 17:22:55,946 INFO L796 eck$LassoCheckResult]: Loop: 74#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 73#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 74#L18 [2019-12-07 17:22:55,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:55,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-12-07 17:22:55,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:55,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198216514] [2019-12-07 17:22:55,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,954 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:55,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:55,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2019-12-07 17:22:55,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:55,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945590796] [2019-12-07 17:22:55,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,962 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:55,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:55,962 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2019-12-07 17:22:55,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:55,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286509542] [2019-12-07 17:22:55,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:55,971 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:55,984 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:55,984 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:55,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:55,985 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:55,985 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:22:55,985 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:55,985 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:55,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:55,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2019-12-07 17:22:55,985 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:55,985 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:55,986 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 17:22:55,988 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 17:22:55,990 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 17:22:55,992 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 17:22:55,996 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 17:22:56,037 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:56,037 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:56,040 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:56,043 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:22:56,044 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_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:56,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:56,050 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:22:56,051 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_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,054 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:56,054 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:56,057 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:22:56,058 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=1} Honda state: {ULTIMATE.start_main_~x~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:56,062 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:22:56,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:56,116 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:22:56,117 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:56,117 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:56,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:56,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:56,118 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:22:56,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:56,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:56,118 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:56,118 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration2_Loop [2019-12-07 17:22:56,118 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:56,119 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:56,120 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 17:22:56,123 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 17:22:56,125 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 17:22:56,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:56,131 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:56,167 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:56,167 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,171 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 17:22:56,172 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:56,172 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:56,172 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:56,172 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:56,174 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:56,174 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:56,178 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,182 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 17:22:56,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:56,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:56,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:56,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:56,186 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 17:22:56,186 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 17:22:56,190 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,193 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 17:22:56,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:56,194 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:56,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:56,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:56,195 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:56,195 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:56,195 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:56,196 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,200 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 17:22:56,201 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:56,201 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:56,202 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:56,202 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:56,202 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:56,202 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:56,202 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:56,204 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:22:56,207 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-12-07 17:22:56,207 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,209 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:22:56,209 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:22:56,210 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:22:56,210 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 17:22:56,211 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:22:56,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:56,223 INFO L264 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:22:56,223 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:56,227 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:22:56,227 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:56,240 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 17:22:56,240 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:22:56,240 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-12-07 17:22:56,253 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2019-12-07 17:22:56,254 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 17:22:56,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:56,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 17:22:56,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2019-12-07 17:22:56,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:56,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 17:22:56,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:56,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2019-12-07 17:22:56,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:56,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2019-12-07 17:22:56,257 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 17:22:56,257 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2019-12-07 17:22:56,257 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-12-07 17:22:56,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-12-07 17:22:56,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2019-12-07 17:22:56,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:22:56,258 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2019-12-07 17:22:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2019-12-07 17:22:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2019-12-07 17:22:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 17:22:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2019-12-07 17:22:56,259 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 17:22:56,259 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2019-12-07 17:22:56,259 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:22:56,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2019-12-07 17:22:56,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2019-12-07 17:22:56,260 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:22:56,260 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:22:56,260 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2019-12-07 17:22:56,261 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-12-07 17:22:56,261 INFO L794 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 125#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 126#L18 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 131#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2019-12-07 17:22:56,261 INFO L796 eck$LassoCheckResult]: Loop: 129#L18 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 130#L18-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L18 [2019-12-07 17:22:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2019-12-07 17:22:56,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:56,262 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888595119] [2019-12-07 17:22:56,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:56,271 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:56,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:56,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2019-12-07 17:22:56,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:56,272 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729538704] [2019-12-07 17:22:56,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:56,276 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:56,277 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2019-12-07 17:22:56,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:22:56,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869090628] [2019-12-07 17:22:56,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:22:56,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:56,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:22:56,286 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:22:56,298 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:56,298 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:56,298 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:56,298 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:56,298 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:22:56,298 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:56,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:56,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:56,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2019-12-07 17:22:56,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:56,299 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:56,300 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 17:22:56,305 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 17:22:56,307 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 17:22:56,309 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 17:22:56,311 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 17:22:56,341 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:56,341 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:22:56,344 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:22:56,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:22:56,397 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:22:56,398 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:22:56,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:22:56,398 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:22:56,398 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:22:56,398 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:22:56,398 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:22:56,398 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:22:56,398 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:22:56,398 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig4.c_Iteration3_Loop [2019-12-07 17:22:56,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:22:56,398 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:22:56,399 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 17:22:56,404 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 17:22:56,406 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 17:22:56,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:56,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:22:56,442 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:22:56,442 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,445 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 17:22:56,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:22:56,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:22:56,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:22:56,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:22:56,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:22:56,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:22:56,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:22:56,448 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:22:56,451 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:22:56,451 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_24d2cafe-638a-4d13-84a1-c0ae6863c678/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 17:22:56,454 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:22:56,454 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:22:56,454 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:22:56,455 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-12-07 17:22:56,456 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:22:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:56,475 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:22:56,476 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:56,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:56,480 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:22:56,480 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:22:56,486 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:22:56,487 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 17:22:56,498 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2019-12-07 17:22:56,499 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 17:22:56,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 17:22:56,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 17:22:56,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:56,499 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:22:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:56,514 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:22:56,515 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:56,518 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:22:56,518 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:56,523 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 17:22:56,523 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:22:56,523 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 17:22:56,533 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2019-12-07 17:22:56,533 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 17:22:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2019-12-07 17:22:56,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 17:22:56,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:56,534 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:22:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:22:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:56,546 INFO L264 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 17:22:56,546 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:22:56,549 WARN L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:22:56,549 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:22:56,555 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 17:22:56,555 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 17:22:56,555 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-12-07 17:22:56,566 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2019-12-07 17:22:56,566 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 17:22:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 17:22:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2019-12-07 17:22:56,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2019-12-07 17:22:56,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:56,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2019-12-07 17:22:56,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:56,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2019-12-07 17:22:56,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:22:56,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-12-07 17:22:56,568 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:22:56,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2019-12-07 17:22:56,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:22:56,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:22:56,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:22:56,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:22:56,569 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:22:56,569 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:22:56,569 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:22:56,569 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:22:56,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:22:56,569 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:22:56,569 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:22:56,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:22:56 BoogieIcfgContainer [2019-12-07 17:22:56,573 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:22:56,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:22:56,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:22:56,574 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:22:56,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:22:55" (3/4) ... [2019-12-07 17:22:56,576 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:22:56,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:22:56,578 INFO L168 Benchmark]: Toolchain (without parser) took 1542.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 943.3 MB in the beginning and 792.8 MB in the end (delta: 150.5 MB). Peak memory consumption was 273.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:56,579 INFO L168 Benchmark]: CDTParser took 0.20 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 17:22:56,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 165.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:56,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:56,580 INFO L168 Benchmark]: Boogie Preprocessor took 11.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:56,580 INFO L168 Benchmark]: RCFGBuilder took 124.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:56,581 INFO L168 Benchmark]: BuchiAutomizer took 1215.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 792.8 MB in the end (delta: 306.9 MB). Peak memory consumption was 306.9 MB. Max. memory is 11.5 GB. [2019-12-07 17:22:56,581 INFO L168 Benchmark]: Witness Printer took 3.13 ms. Allocated memory is still 1.2 GB. Free memory is still 792.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:22:56,583 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 165.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -176.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 124.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1215.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 792.8 MB in the end (delta: 306.9 MB). Peak memory consumption was 306.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.13 ms. Allocated memory is still 1.2 GB. Free memory is still 792.8 MB. 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 22 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 32 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...