./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005b.i -s /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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 32bit --witnessprinter.graph.data.programhash 7408fe5ba42f5c474832c90e26f3e7ef2342554c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:56:33,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:33,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:33,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:33,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:33,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:33,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:33,478 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:33,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:33,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:33,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:33,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:33,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:33,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:33,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:33,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:33,485 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:33,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:33,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:33,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:33,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:33,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:33,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:33,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:33,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:33,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:33,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:33,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:33,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:33,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:33,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:33,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:33,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:33,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:33,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:33,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:33,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:33,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:33,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:33,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:33,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:33,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:56:33,527 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:33,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:33,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:33,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:33,533 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:33,533 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:56:33,533 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:56:33,533 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:56:33,534 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:56:33,534 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:56:33,534 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:56:33,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:33,534 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:33,535 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:56:33,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:33,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:33,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:33,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:56:33,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:56:33,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:56:33,537 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:33,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:33,537 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:56:33,538 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:33,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:56:33,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:33,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:33,539 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:56:33,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:33,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:33,539 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:56:33,540 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:56:33,540 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/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7408fe5ba42f5c474832c90e26f3e7ef2342554c [2019-10-22 08:56:33,570 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:33,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:33,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:33,584 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:33,584 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:33,585 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/../../sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-10-22 08:56:33,637 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/data/d6ee58496/594a802f8c864cc6a38d6b014be52965/FLAGc391b4d94 [2019-10-22 08:56:34,033 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:34,036 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/sv-benchmarks/c/loop-lit/cggmp2005b.i [2019-10-22 08:56:34,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/data/d6ee58496/594a802f8c864cc6a38d6b014be52965/FLAGc391b4d94 [2019-10-22 08:56:34,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/data/d6ee58496/594a802f8c864cc6a38d6b014be52965 [2019-10-22 08:56:34,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:34,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:34,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:34,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:34,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:34,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65a8d0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34, skipping insertion in model container [2019-10-22 08:56:34,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,077 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:34,097 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:34,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:34,278 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:34,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:34,372 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:34,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34 WrapperNode [2019-10-22 08:56:34,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:34,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:34,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:34,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:34,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:34,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:34,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:34,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:34,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... [2019-10-22 08:56:34,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:34,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:34,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:34,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:34,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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 [2019-10-22 08:56:34,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:34,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:34,616 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:34,617 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 08:56:34,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:34 BoogieIcfgContainer [2019-10-22 08:56:34,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:34,619 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:56:34,619 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:56:34,622 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:56:34,623 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:34,623 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:56:34" (1/3) ... [2019-10-22 08:56:34,624 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60194ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:34, skipping insertion in model container [2019-10-22 08:56:34,624 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:34,624 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:34" (2/3) ... [2019-10-22 08:56:34,625 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60194ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:56:34, skipping insertion in model container [2019-10-22 08:56:34,625 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:56:34,625 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:34" (3/3) ... [2019-10-22 08:56:34,626 INFO L371 chiAutomizerObserver]: Analyzing ICFG cggmp2005b.i [2019-10-22 08:56:34,694 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:56:34,694 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:56:34,694 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:56:34,695 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:56:34,695 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:56:34,695 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:56:34,695 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:56:34,695 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:56:34,709 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-10-22 08:56:34,753 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:56:34,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:34,754 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:34,768 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:34,769 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:56:34,769 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:56:34,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-10-22 08:56:34,770 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:56:34,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:34,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:34,771 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:34,771 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:56:34,779 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 8#L21-3true [2019-10-22 08:56:34,780 INFO L793 eck$LassoCheckResult]: Loop: 8#L21-3true assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 3#L17-2true assume !(main_~j~0 < 20); 13#L17-3true main_~k~0 := 4; 11#L21-2true assume !true; 8#L21-3true [2019-10-22 08:56:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,785 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:56:34,791 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954041534] [2019-10-22 08:56:34,792 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,792 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,868 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:34,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1238515, now seen corresponding path program 1 times [2019-10-22 08:56:34,870 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579885451] [2019-10-22 08:56:34,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,870 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:34,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:34,904 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579885451] [2019-10-22 08:56:34,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:34,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:56:34,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151539650] [2019-10-22 08:56:34,910 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:56:34,911 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:34,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:56:34,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:56:34,929 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-10-22 08:56:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:34,936 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-10-22 08:56:34,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:56:34,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-10-22 08:56:34,940 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:56:34,944 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 5 states and 7 transitions. [2019-10-22 08:56:34,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:56:34,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:56:34,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 7 transitions. [2019-10-22 08:56:34,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:56:34,946 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-10-22 08:56:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 7 transitions. [2019-10-22 08:56:34,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-10-22 08:56:34,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-10-22 08:56:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2019-10-22 08:56:34,976 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-10-22 08:56:34,977 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2019-10-22 08:56:34,977 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:56:34,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2019-10-22 08:56:34,977 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:56:34,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:34,978 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:34,978 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:56:34,978 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:56:34,978 INFO L791 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 35#L21-3 [2019-10-22 08:56:34,978 INFO L793 eck$LassoCheckResult]: Loop: 35#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 32#L17-2 assume !(main_~j~0 < 20); 33#L17-3 main_~k~0 := 4; 36#L21-2 assume !(main_~k~0 <= 3); 35#L21-3 [2019-10-22 08:56:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,979 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-10-22 08:56:34,979 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,980 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985924261] [2019-10-22 08:56:34,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,980 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:34,987 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:34,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1238511, now seen corresponding path program 1 times [2019-10-22 08:56:34,988 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:34,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350912733] [2019-10-22 08:56:34,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,988 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:34,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,008 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,009 INFO L82 PathProgramCache]: Analyzing trace with hash 29867662, now seen corresponding path program 1 times [2019-10-22 08:56:35,009 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:35,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863530837] [2019-10-22 08:56:35,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,010 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:35,040 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863530837] [2019-10-22 08:56:35,040 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:56:35,041 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:56:35,041 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333277595] [2019-10-22 08:56:35,145 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:35,146 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:35,146 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:35,147 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:35,147 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:35,147 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,147 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:35,147 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:35,147 INFO L131 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration2_Loop [2019-10-22 08:56:35,147 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:35,148 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:35,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,259 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:35,260 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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 [2019-10-22 08:56:35,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:35,281 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=20} Honda state: {ULTIMATE.start_main_~j~0=20} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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 [2019-10-22 08:56:35,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,293 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:35,310 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,320 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:35,323 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:35,323 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:35,323 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:35,323 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:35,323 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:35,323 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,324 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:35,324 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:35,324 INFO L131 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration2_Loop [2019-10-22 08:56:35,324 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:35,324 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:35,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,385 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:35,390 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:35,392 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 [2019-10-22 08:56:35,394 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:35,394 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:35,395 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:35,395 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:35,395 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:35,398 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:35,398 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:35,401 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:35,402 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 [2019-10-22 08:56:35,403 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:35,403 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:35,403 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:35,403 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:35,403 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:35,405 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:35,406 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:35,414 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:35,420 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:56:35,420 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:56:35,422 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:35,422 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:35,422 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:35,423 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 201 Supporting invariants [] [2019-10-22 08:56:35,425 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:35,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:35,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:35,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:35,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:35,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:35,514 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 [2019-10-22 08:56:35,515 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2019-10-22 08:56:35,554 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 4 states. [2019-10-22 08:56:35,555 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 [2019-10-22 08:56:35,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:56:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-10-22 08:56:35,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2019-10-22 08:56:35,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:35,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2019-10-22 08:56:35,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:35,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 1 letters. Loop has 8 letters. [2019-10-22 08:56:35,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:35,563 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 20 transitions. [2019-10-22 08:56:35,565 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-10-22 08:56:35,566 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 19 transitions. [2019-10-22 08:56:35,566 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:56:35,566 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:56:35,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 19 transitions. [2019-10-22 08:56:35,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:35,567 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 19 transitions. [2019-10-22 08:56:35,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 19 transitions. [2019-10-22 08:56:35,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2019-10-22 08:56:35,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 08:56:35,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2019-10-22 08:56:35,571 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 16 transitions. [2019-10-22 08:56:35,571 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:35,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:56:35,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:56:35,572 INFO L87 Difference]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2019-10-22 08:56:35,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:35,582 INFO L93 Difference]: Finished difference Result 11 states and 18 transitions. [2019-10-22 08:56:35,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:56:35,583 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 18 transitions. [2019-10-22 08:56:35,584 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-10-22 08:56:35,585 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 18 transitions. [2019-10-22 08:56:35,585 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:56:35,585 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:56:35,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 18 transitions. [2019-10-22 08:56:35,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:35,585 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 18 transitions. [2019-10-22 08:56:35,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 18 transitions. [2019-10-22 08:56:35,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-10-22 08:56:35,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-10-22 08:56:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 18 transitions. [2019-10-22 08:56:35,587 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 18 transitions. [2019-10-22 08:56:35,587 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 18 transitions. [2019-10-22 08:56:35,587 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:56:35,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 18 transitions. [2019-10-22 08:56:35,590 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2019-10-22 08:56:35,591 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:35,591 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:35,591 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:56:35,591 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:56:35,591 INFO L791 eck$LassoCheckResult]: Stem: 111#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 112#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 113#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 107#L17-2 [2019-10-22 08:56:35,592 INFO L793 eck$LassoCheckResult]: Loop: 107#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 107#L17-2 [2019-10-22 08:56:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,592 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-10-22 08:56:35,592 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:35,592 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764349806] [2019-10-22 08:56:35,592 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,593 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,613 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:35,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,614 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-10-22 08:56:35,614 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:35,614 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68517796] [2019-10-22 08:56:35,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,614 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,626 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:35,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:35,627 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2019-10-22 08:56:35,627 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:35,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679065531] [2019-10-22 08:56:35,627 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,627 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:35,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:35,642 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:35,721 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:35,721 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:35,721 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:35,721 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:35,721 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:35,721 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,722 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:35,722 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:35,722 INFO L131 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration3_Lasso [2019-10-22 08:56:35,722 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:35,722 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:35,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:35,794 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:35,794 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:35,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,802 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:35,808 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:56:35,808 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~k~0=0} Honda state: {ULTIMATE.start_main_~k~0=9} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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 [2019-10-22 08:56:35,819 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:35,819 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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) [2019-10-22 08:56:35,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:35,845 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:37,754 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:37,756 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:37,757 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:37,757 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:37,757 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:37,757 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:37,757 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:37,757 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:37,757 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:37,757 INFO L131 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration3_Lasso [2019-10-22 08:56:37,757 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:37,757 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:37,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:37,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:37,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:37,818 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:37,818 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:37,819 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 [2019-10-22 08:56:37,820 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:37,820 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:37,820 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:37,820 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:37,822 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:37,822 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:37,829 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:56:37,829 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 [2019-10-22 08:56:37,830 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:37,830 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:37,830 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:37,830 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:37,833 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:56:37,833 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:56:37,855 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:37,865 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:56:37,865 INFO L444 ModelExtractionUtils]: 5 out of 10 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:56:37,866 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:37,868 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-10-22 08:56:37,868 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:37,868 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 39 Supporting invariants [1*ULTIMATE.start_main_~i~0 - 1 >= 0] [2019-10-22 08:56:37,870 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-10-22 08:56:37,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:37,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:37,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:37,919 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:56:37,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:37,920 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.3 stem predicates 1 loop predicates [2019-10-22 08:56:37,920 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 18 transitions. cyclomatic complexity: 10 Second operand 4 states. [2019-10-22 08:56:37,956 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 18 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 20 states and 33 transitions. Complement of second has 6 states. [2019-10-22 08:56:37,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 3 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:56:37,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:56:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2019-10-22 08:56:37,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 1 letters. [2019-10-22 08:56:37,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:37,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 4 letters. Loop has 1 letters. [2019-10-22 08:56:37,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:37,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:56:37,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:37,958 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 33 transitions. [2019-10-22 08:56:37,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:56:37,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 17 states and 27 transitions. [2019-10-22 08:56:37,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:56:37,959 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-10-22 08:56:37,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 27 transitions. [2019-10-22 08:56:37,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:37,960 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 27 transitions. [2019-10-22 08:56:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 27 transitions. [2019-10-22 08:56:37,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2019-10-22 08:56:37,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 08:56:37,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 26 transitions. [2019-10-22 08:56:37,962 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 26 transitions. [2019-10-22 08:56:37,962 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 26 transitions. [2019-10-22 08:56:37,962 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:56:37,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 26 transitions. [2019-10-22 08:56:37,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:56:37,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:37,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:37,964 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-10-22 08:56:37,964 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:56:37,964 INFO L791 eck$LassoCheckResult]: Stem: 186#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 187#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 188#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 183#L17-2 assume !(main_~j~0 < 20); 184#L17-3 main_~k~0 := 4; 191#L21-2 [2019-10-22 08:56:37,965 INFO L793 eck$LassoCheckResult]: Loop: 191#L21-2 assume !!(main_~k~0 <= 3);main_~k~0 := 1 + main_~k~0; 191#L21-2 [2019-10-22 08:56:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash 29869391, now seen corresponding path program 1 times [2019-10-22 08:56:37,965 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:37,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105872614] [2019-10-22 08:56:37,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:37,966 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:37,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:37,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105872614] [2019-10-22 08:56:37,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483776267] [2019-10-22 08:56:37,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,070 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:38,071 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-10-22 08:56:38,071 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174977374] [2019-10-22 08:56:38,071 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:56:38,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,071 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 1 times [2019-10-22 08:56:38,072 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,074 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779517628] [2019-10-22 08:56:38,074 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,074 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:38,079 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:38,095 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:38,095 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:38,095 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:38,095 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:38,095 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:38,095 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:38,095 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:38,096 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:38,096 INFO L131 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration4_Loop [2019-10-22 08:56:38,096 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:38,096 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:38,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:38,119 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:38,120 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:38,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:38,125 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:56:38,137 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:38,137 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:38,145 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:38,148 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:38,148 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:38,148 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:38,148 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:38,148 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:38,149 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:38,149 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:38,149 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:38,149 INFO L131 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration4_Loop [2019-10-22 08:56:38,149 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:38,149 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:38,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:38,175 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:38,175 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:38,176 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 [2019-10-22 08:56:38,177 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:38,177 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:38,177 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:38,177 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:38,177 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:38,178 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:38,178 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:38,187 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:38,190 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:56:38,195 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:56:38,195 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:38,196 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:38,196 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:38,197 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = -2*ULTIMATE.start_main_~k~0 + 7 Supporting invariants [] [2019-10-22 08:56:38,197 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:38,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,229 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,230 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:56:38,230 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 26 transitions. cyclomatic complexity: 14 Second operand 2 states. [2019-10-22 08:56:38,248 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 26 transitions. cyclomatic complexity: 14. Second operand 2 states. Result 47 states and 75 transitions. Complement of second has 5 states. [2019-10-22 08:56:38,249 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 [2019-10-22 08:56:38,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:56:38,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-10-22 08:56:38,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 08:56:38,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:38,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 1 letters. [2019-10-22 08:56:38,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:38,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 5 letters. Loop has 2 letters. [2019-10-22 08:56:38,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:38,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 75 transitions. [2019-10-22 08:56:38,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:56:38,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 31 states and 51 transitions. [2019-10-22 08:56:38,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 08:56:38,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:56:38,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 51 transitions. [2019-10-22 08:56:38,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:38,254 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 51 transitions. [2019-10-22 08:56:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 51 transitions. [2019-10-22 08:56:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 16. [2019-10-22 08:56:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 08:56:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 25 transitions. [2019-10-22 08:56:38,256 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2019-10-22 08:56:38,258 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:56:38,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:56:38,258 INFO L87 Difference]: Start difference. First operand 16 states and 25 transitions. Second operand 8 states. [2019-10-22 08:56:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,298 INFO L93 Difference]: Finished difference Result 17 states and 26 transitions. [2019-10-22 08:56:38,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:56:38,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 26 transitions. [2019-10-22 08:56:38,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:56:38,300 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 26 transitions. [2019-10-22 08:56:38,300 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-10-22 08:56:38,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:56:38,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 26 transitions. [2019-10-22 08:56:38,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:56:38,301 INFO L688 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2019-10-22 08:56:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 26 transitions. [2019-10-22 08:56:38,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 08:56:38,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 08:56:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 26 transitions. [2019-10-22 08:56:38,302 INFO L711 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2019-10-22 08:56:38,302 INFO L591 BuchiCegarLoop]: Abstraction has 17 states and 26 transitions. [2019-10-22 08:56:38,303 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:56:38,303 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 26 transitions. [2019-10-22 08:56:38,303 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:56:38,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:56:38,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:56:38,304 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2019-10-22 08:56:38,304 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:56:38,307 INFO L791 eck$LassoCheckResult]: Stem: 342#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;main_~i~0 := 0;main_~k~0 := 9;main_~j~0 := -100; 343#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 340#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 341#L17-2 assume !!(main_~j~0 < 20);main_~j~0 := main_~i~0 + main_~j~0; 351#L17-2 assume !(main_~j~0 < 20); 348#L17-3 main_~k~0 := 4; 347#L21-2 assume !(main_~k~0 <= 3); 344#L21-3 assume !!(main_~i~0 <= 100);main_~i~0 := 1 + main_~i~0; 345#L17-2 assume !(main_~j~0 < 20); 338#L17-3 main_~k~0 := 4; 346#L21-2 [2019-10-22 08:56:38,307 INFO L793 eck$LassoCheckResult]: Loop: 346#L21-2 assume !!(main_~k~0 <= 3);main_~k~0 := 1 + main_~k~0; 346#L21-2 [2019-10-22 08:56:38,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,307 INFO L82 PathProgramCache]: Analyzing trace with hash 352026178, now seen corresponding path program 1 times [2019-10-22 08:56:38,307 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906757534] [2019-10-22 08:56:38,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,308 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:56:38,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906757534] [2019-10-22 08:56:38,342 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475705830] [2019-10-22 08:56:38,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 08:56:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:56:38,406 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-22 08:56:38,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-10-22 08:56:38,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316198019] [2019-10-22 08:56:38,407 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:56:38,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,407 INFO L82 PathProgramCache]: Analyzing trace with hash 63, now seen corresponding path program 2 times [2019-10-22 08:56:38,407 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:56:38,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504129803] [2019-10-22 08:56:38,407 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,408 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:56:38,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:56:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:56:38,412 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:56:38,420 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:38,420 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:38,420 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:38,421 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:38,421 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:56:38,421 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:38,421 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:38,421 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:38,421 INFO L131 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration5_Loop [2019-10-22 08:56:38,421 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:38,421 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:38,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:38,440 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:38,440 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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 [2019-10-22 08:56:38,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:56:38,447 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b36c7a4e-5119-4ecf-912a-1b8ad883553a/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 [2019-10-22 08:56:38,458 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:56:38,458 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:56:38,465 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:56:38,467 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:56:38,467 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:56:38,467 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:56:38,467 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:56:38,467 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:56:38,467 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:56:38,468 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:56:38,468 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:56:38,468 INFO L131 ssoRankerPreferences]: Filename of dumped script: cggmp2005b.i_Iteration5_Loop [2019-10-22 08:56:38,468 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:56:38,468 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:56:38,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:56:38,490 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:56:38,490 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:56:38,490 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 [2019-10-22 08:56:38,491 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:56:38,491 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:56:38,491 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:56:38,491 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:56:38,491 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:56:38,492 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:56:38,492 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:56:38,495 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:56:38,497 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:56:38,497 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:56:38,497 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:56:38,497 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:56:38,497 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:56:38,497 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = -2*ULTIMATE.start_main_~k~0 + 7 Supporting invariants [] [2019-10-22 08:56:38,498 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:56:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,521 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,521 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:56:38,522 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:56:38,531 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 43 states and 68 transitions. Complement of second has 5 states. [2019-10-22 08:56:38,531 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 [2019-10-22 08:56:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:56:38,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-10-22 08:56:38,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 1 letters. [2019-10-22 08:56:38,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:38,532 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:56:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,553 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,554 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:56:38,554 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:56:38,562 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 43 states and 68 transitions. Complement of second has 5 states. [2019-10-22 08:56:38,563 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 [2019-10-22 08:56:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:56:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2019-10-22 08:56:38,563 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 1 letters. [2019-10-22 08:56:38,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:38,564 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:56:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:56:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:56:38,585 WARN L254 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:56:38,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:56:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:56:38,585 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-10-22 08:56:38,586 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2019-10-22 08:56:38,595 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 32 states and 48 transitions. Complement of second has 4 states. [2019-10-22 08:56:38,595 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 [2019-10-22 08:56:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:56:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2019-10-22 08:56:38,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 1 letters. [2019-10-22 08:56:38,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:38,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 11 letters. Loop has 1 letters. [2019-10-22 08:56:38,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:38,597 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 10 letters. Loop has 2 letters. [2019-10-22 08:56:38,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:56:38,597 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 48 transitions. [2019-10-22 08:56:38,598 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:38,598 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-10-22 08:56:38,598 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:56:38,598 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:56:38,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:56:38,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:56:38,598 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:38,599 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:38,599 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:56:38,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:56:38,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:56:38,599 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2019-10-22 08:56:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:56:38,599 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 08:56:38,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:56:38,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 08:56:38,600 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:38,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:56:38,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:56:38,601 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:56:38,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:56:38,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:56:38,601 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:38,601 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:38,601 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:56:38,601 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 08:56:38,601 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:56:38,602 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:56:38,602 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:56:38,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:56:38 BoogieIcfgContainer [2019-10-22 08:56:38,608 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:56:38,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:56:38,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:56:38,609 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:56:38,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:34" (3/4) ... [2019-10-22 08:56:38,612 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:56:38,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:56:38,614 INFO L168 Benchmark]: Toolchain (without parser) took 4553.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 944.5 MB in the beginning and 876.1 MB in the end (delta: 68.5 MB). Peak memory consumption was 232.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:38,614 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:38,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -210.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:38,615 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:38,615 INFO L168 Benchmark]: Boogie Preprocessor took 16.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:38,616 INFO L168 Benchmark]: RCFGBuilder took 196.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:38,616 INFO L168 Benchmark]: BuchiAutomizer took 3989.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 876.1 MB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:56:38,617 INFO L168 Benchmark]: Witness Printer took 3.70 ms. Allocated memory is still 1.2 GB. Free memory is still 876.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:56:38,619 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 311.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -210.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 196.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3989.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 876.1 MB in the end (delta: 261.8 MB). Peak memory consumption was 261.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.70 ms. Allocated memory is still 1.2 GB. Free memory is still 876.1 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 8 terminating modules (4 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * i + 201 and consists of 3 locations. One deterministic module has affine ranking function -2 * j + 39 and consists of 5 locations. One deterministic module has affine ranking function -2 * k + 7 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * k + 7 and consists of 3 locations. 4 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 17 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 72 SDtfs, 45 SDslu, 34 SDs, 0 SdLazy, 44 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso1 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax100 hnf98 lsp87 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf93 smp100 dnf100 smp100 tf109 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...