./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b98f7fd40026cd249d1c292b5307435abc3c32a2 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:54:11,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:11,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:11,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:11,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:11,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:11,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:11,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:11,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:11,324 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:11,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:11,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:11,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:11,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:11,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:11,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:11,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:11,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:11,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:11,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:11,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:11,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:11,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:11,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:11,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:11,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:11,349 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:11,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:11,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:11,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:11,351 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:11,352 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:11,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:11,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:11,353 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:11,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:11,354 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:11,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:11,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:11,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:11,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:11,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:54:11,374 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:11,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:11,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:11,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:11,376 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:11,376 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:54:11,376 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:54:11,376 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:54:11,376 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:54:11,377 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:54:11,377 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:54:11,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:11,377 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:11,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:11,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:11,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:54:11,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:54:11,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:54:11,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:11,387 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:54:11,387 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:11,387 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:54:11,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:11,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:11,388 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:54:11,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:11,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:11,388 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:54:11,389 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:54:11,389 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_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b98f7fd40026cd249d1c292b5307435abc3c32a2 [2019-10-22 08:54:11,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:11,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:11,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:11,438 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:11,439 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:11,439 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2019-10-22 08:54:11,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/data/31208dbe3/41771f705c7c4d5bad1323e5900a7ac2/FLAG631390db3 [2019-10-22 08:54:11,850 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:11,851 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2019-10-22 08:54:11,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/data/31208dbe3/41771f705c7c4d5bad1323e5900a7ac2/FLAG631390db3 [2019-10-22 08:54:11,866 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/data/31208dbe3/41771f705c7c4d5bad1323e5900a7ac2 [2019-10-22 08:54:11,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:11,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:11,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:11,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:11,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:11,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7464cab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11, skipping insertion in model container [2019-10-22 08:54:11,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,883 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:11,902 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:12,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:12,077 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:12,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:12,167 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:12,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12 WrapperNode [2019-10-22 08:54:12,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:12,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:12,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:12,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:12,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:12,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:12,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:12,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:12,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:12,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:12,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:12,211 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:12,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/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 08:54:12,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:12,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:12,404 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:12,404 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:54:12,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12 BoogieIcfgContainer [2019-10-22 08:54:12,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:12,406 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:54:12,406 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:54:12,410 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:54:12,411 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:12,411 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:54:11" (1/3) ... [2019-10-22 08:54:12,412 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6708a4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:12, skipping insertion in model container [2019-10-22 08:54:12,412 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:12,412 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (2/3) ... [2019-10-22 08:54:12,412 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6708a4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:12, skipping insertion in model container [2019-10-22 08:54:12,412 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:12,412 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12" (3/3) ... [2019-10-22 08:54:12,415 INFO L371 chiAutomizerObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2019-10-22 08:54:12,457 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:54:12,457 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:54:12,457 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:54:12,457 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:12,458 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:12,458 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:54:12,458 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:12,458 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:54:12,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-10-22 08:54:12,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:54:12,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:12,489 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:12,495 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:54:12,495 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:54:12,495 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:54:12,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-10-22 08:54:12,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:54:12,496 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:12,496 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:12,497 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:54:12,497 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:54:12,504 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 10#L20true assume main_~k~0 >= 1;main_~i~0 := 0; 11#L22-2true [2019-10-22 08:54:12,504 INFO L793 eck$LassoCheckResult]: Loop: 11#L22-2true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 5#L24-2true assume !(main_~j~0 <= main_~i~0); 3#L24-3true main_~i~0 := 1 + main_~i~0; 11#L22-2true [2019-10-22 08:54:12,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,510 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-10-22 08:54:12,517 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,518 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811091392] [2019-10-22 08:54:12,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,518 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:12,609 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:12,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,610 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2019-10-22 08:54:12,610 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444023694] [2019-10-22 08:54:12,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:12,623 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:12,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2019-10-22 08:54:12,625 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194731614] [2019-10-22 08:54:12,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:12,679 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 08:54:12,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194731614] [2019-10-22 08:54:12,679 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:12,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:54:12,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513879841] [2019-10-22 08:54:12,777 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:12,777 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:12,778 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:12,778 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:12,779 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:12,779 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:12,779 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:12,779 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:12,779 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2019-10-22 08:54:12,779 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:12,780 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:12,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:12,806 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 08:54:12,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:12,906 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:12,907 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/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 08:54:12,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:12,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:12,925 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:12,925 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:12,931 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:12,931 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:12,935 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:12,935 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:12,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:12,941 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:12,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:12,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:13,075 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:13,077 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:13,077 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:13,077 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:13,077 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:13,077 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:13,078 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:13,078 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:13,078 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:13,078 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration1_Loop [2019-10-22 08:54:13,078 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:13,078 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:13,080 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 08:54:13,083 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 08:54:13,087 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 08:54:13,231 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:13,242 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:13,243 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 08:54:13,244 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:13,244 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:13,245 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:13,245 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:13,248 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:13,249 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:13,259 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:13,259 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 08:54:13,260 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:13,260 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:13,260 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:13,260 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:13,267 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:13,267 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:13,274 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:13,275 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 08:54:13,275 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:13,276 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:13,276 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:13,276 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:13,276 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:13,277 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:13,277 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:13,286 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:13,291 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:54:13,291 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:54:13,293 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:13,294 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:54:13,294 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:13,294 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:54:13,297 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:54:13,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:54:13,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,350 WARN L254 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:54:13,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:13,380 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 08:54:13,396 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 08:54:13,397 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2019-10-22 08:54:13,470 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 35 states and 53 transitions. Complement of second has 9 states. [2019-10-22 08:54:13,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:13,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:54:13,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 33 transitions. [2019-10-22 08:54:13,474 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 3 letters. [2019-10-22 08:54:13,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:13,475 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 5 letters. Loop has 3 letters. [2019-10-22 08:54:13,475 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:13,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 33 transitions. Stem has 2 letters. Loop has 6 letters. [2019-10-22 08:54:13,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:13,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 53 transitions. [2019-10-22 08:54:13,479 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:54:13,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 14 states and 19 transitions. [2019-10-22 08:54:13,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 08:54:13,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-10-22 08:54:13,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2019-10-22 08:54:13,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:13,485 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2019-10-22 08:54:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2019-10-22 08:54:13,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-10-22 08:54:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-22 08:54:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2019-10-22 08:54:13,510 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 18 transitions. [2019-10-22 08:54:13,511 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:13,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,514 INFO L87 Difference]: Start difference. First operand 13 states and 18 transitions. Second operand 4 states. [2019-10-22 08:54:13,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,537 INFO L93 Difference]: Finished difference Result 11 states and 14 transitions. [2019-10-22 08:54:13,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:13,538 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2019-10-22 08:54:13,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:54:13,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 7 states and 8 transitions. [2019-10-22 08:54:13,539 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-10-22 08:54:13,539 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-10-22 08:54:13,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-10-22 08:54:13,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:54:13,540 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-10-22 08:54:13,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-10-22 08:54:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2019-10-22 08:54:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-10-22 08:54:13,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-10-22 08:54:13,541 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 08:54:13,541 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-10-22 08:54:13,541 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:54:13,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-10-22 08:54:13,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-10-22 08:54:13,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:13,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:13,542 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-10-22 08:54:13,542 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:54:13,542 INFO L791 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 122#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 120#L22-2 [2019-10-22 08:54:13,543 INFO L793 eck$LassoCheckResult]: Loop: 120#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 123#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 124#L24-2 assume !(main_~j~0 <= main_~i~0); 119#L24-3 main_~i~0 := 1 + main_~i~0; 120#L22-2 [2019-10-22 08:54:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,543 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2019-10-22 08:54:13,543 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,543 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273729977] [2019-10-22 08:54:13,543 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,543 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:13,551 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:13,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1332592, now seen corresponding path program 1 times [2019-10-22 08:54:13,552 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,552 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044876765] [2019-10-22 08:54:13,552 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,552 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:13,566 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,567 INFO L82 PathProgramCache]: Analyzing trace with hash 920235987, now seen corresponding path program 1 times [2019-10-22 08:54:13,567 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,567 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705475423] [2019-10-22 08:54:13,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,567 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:13,587 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:13,617 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:13,618 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:13,618 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:13,618 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:13,618 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:13,618 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:13,618 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:13,618 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:13,618 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2019-10-22 08:54:13,619 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:13,619 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:13,620 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 08:54:13,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:13,627 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 08:54:13,699 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:13,699 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/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) [2019-10-22 08:54:13,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:13,704 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:13,715 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:13,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/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 08:54:13,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:13,727 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 08:54:13,739 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:13,739 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:13,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:13,743 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:13,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:13,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:14,222 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:14,224 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:14,225 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:14,225 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:14,225 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:14,225 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:14,225 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:14,225 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:14,225 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:14,225 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration2_Loop [2019-10-22 08:54:14,225 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:14,225 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:14,227 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 08:54:14,231 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 08:54:14,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:14,297 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:14,298 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:14,298 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 08:54:14,299 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:14,299 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:14,299 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:14,299 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:14,301 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:14,301 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:14,309 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:14,318 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 08:54:14,319 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:14,319 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:14,319 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:14,320 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:14,321 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:14,321 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:14,326 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:14,334 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 08:54:14,335 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:14,335 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:14,335 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:14,335 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:14,336 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:14,336 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:14,337 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:14,343 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:14,356 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:54:14,359 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:54:14,360 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:14,360 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:54:14,360 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:14,360 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2019-10-22 08:54:14,361 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:54:14,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:54:14,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:14,399 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 08:54:14,410 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 08:54:14,410 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-10-22 08:54:14,424 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2019-10-22 08:54:14,425 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 08:54:14,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:54:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-10-22 08:54:14,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 4 letters. [2019-10-22 08:54:14,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:14,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 4 letters. [2019-10-22 08:54:14,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:14,426 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 2 letters. Loop has 8 letters. [2019-10-22 08:54:14,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:14,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2019-10-22 08:54:14,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:54:14,427 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 9 states and 12 transitions. [2019-10-22 08:54:14,427 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-10-22 08:54:14,428 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-10-22 08:54:14,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2019-10-22 08:54:14,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:14,428 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2019-10-22 08:54:14,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2019-10-22 08:54:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2019-10-22 08:54:14,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 08:54:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2019-10-22 08:54:14,429 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 08:54:14,429 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2019-10-22 08:54:14,429 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:54:14,430 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2019-10-22 08:54:14,434 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:54:14,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:14,435 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:14,435 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:54:14,435 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:54:14,435 INFO L791 eck$LassoCheckResult]: Stem: 175#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 176#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 180#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 177#L24-2 [2019-10-22 08:54:14,436 INFO L793 eck$LassoCheckResult]: Loop: 177#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 177#L24-2 [2019-10-22 08:54:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:14,436 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2019-10-22 08:54:14,436 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:14,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772713307] [2019-10-22 08:54:14,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,437 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:14,457 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:14,459 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-10-22 08:54:14,459 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:14,459 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431670382] [2019-10-22 08:54:14,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:14,473 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:14,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:14,474 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2019-10-22 08:54:14,474 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:14,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284219076] [2019-10-22 08:54:14,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,475 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:14,484 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:14,519 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:14,519 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:14,519 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:14,519 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:14,519 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:14,520 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:14,520 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:14,520 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:14,520 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Lasso [2019-10-22 08:54:14,520 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:14,520 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:14,522 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 08:54:14,530 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:14,534 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 08:54:14,537 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 08:54:14,539 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 08:54:14,542 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 08:54:14,545 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 08:54:14,548 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 08:54:14,639 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:14,639 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/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 08:54:14,645 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:14,646 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 08:54:14,649 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:14,650 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:14,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:14,659 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:14,662 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:14,663 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:14,674 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:14,674 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:14,686 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:14,686 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:14,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:14,694 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:14,698 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:14,698 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:14,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:14,706 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:14,709 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:14,709 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=0} Honda state: {ULTIMATE.start_main_#t~nondet3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:14,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:14,716 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:14,720 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:14,720 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:14,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:14,728 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:14,732 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:14,732 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:14,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:14,740 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:14,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:14,764 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:15,428 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:15,430 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:15,430 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:15,431 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:15,431 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:15,431 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:15,431 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:15,431 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:15,431 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:15,431 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration3_Lasso [2019-10-22 08:54:15,431 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:15,431 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:15,432 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 08:54:15,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:15,456 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 08:54:15,458 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 08:54:15,462 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 08:54:15,464 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:15,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:15,470 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 08:54:15,539 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:15,539 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:15,540 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 08:54:15,540 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:15,541 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:15,541 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:15,541 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:15,548 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:15,548 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:15,581 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:15,605 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:54:15,605 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:54:15,606 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:15,608 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-10-22 08:54:15,608 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:15,608 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0] [2019-10-22 08:54:15,612 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-10-22 08:54:15,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:54:15,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:15,660 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:54:15,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:15,660 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 08:54:15,661 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:54:15,661 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-10-22 08:54:15,692 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 18 transitions. Complement of second has 6 states. [2019-10-22 08:54:15,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:54:15,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2019-10-22 08:54:15,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-10-22 08:54:15,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:15,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 4 letters. Loop has 1 letters. [2019-10-22 08:54:15,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:15,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2019-10-22 08:54:15,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:15,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2019-10-22 08:54:15,694 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:54:15,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 11 states and 14 transitions. [2019-10-22 08:54:15,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2019-10-22 08:54:15,695 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2019-10-22 08:54:15,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 14 transitions. [2019-10-22 08:54:15,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:15,696 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-10-22 08:54:15,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 14 transitions. [2019-10-22 08:54:15,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 8. [2019-10-22 08:54:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-10-22 08:54:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2019-10-22 08:54:15,697 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-10-22 08:54:15,697 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2019-10-22 08:54:15,697 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:54:15,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2019-10-22 08:54:15,698 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-10-22 08:54:15,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:15,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:15,699 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2019-10-22 08:54:15,699 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:54:15,699 INFO L791 eck$LassoCheckResult]: Stem: 240#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~k~0, main_~i~0, main_~j~0, main_~n~0;havoc main_~k~0;havoc main_~i~0;havoc main_~j~0;havoc main_~n~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~j~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 241#L20 assume main_~k~0 >= 1;main_~i~0 := 0; 245#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 243#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 244#L24-2 assume !(main_~j~0 <= main_~i~0); 238#L24-3 main_~i~0 := 1 + main_~i~0; 239#L22-2 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 0; 242#L24-2 [2019-10-22 08:54:15,699 INFO L793 eck$LassoCheckResult]: Loop: 242#L24-2 assume !!(main_~j~0 <= main_~i~0);main_~j~0 := main_~j~0 + main_~k~0; 242#L24-2 [2019-10-22 08:54:15,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:15,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1537455462, now seen corresponding path program 2 times [2019-10-22 08:54:15,700 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:15,700 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002704050] [2019-10-22 08:54:15,700 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,700 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:15,711 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:15,711 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2019-10-22 08:54:15,711 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:15,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445674597] [2019-10-22 08:54:15,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,712 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:15,716 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:15,717 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 3 times [2019-10-22 08:54:15,717 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:15,717 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966524014] [2019-10-22 08:54:15,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,717 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:15,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:15,728 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:15,798 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:15,798 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:15,799 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:15,799 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:15,799 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:15,799 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:15,799 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:15,799 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:15,799 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2019-10-22 08:54:15,799 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:15,800 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:15,801 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 08:54:15,803 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 08:54:15,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:15,819 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 08:54:15,821 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 08:54:15,823 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 08:54:15,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:15,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:15,888 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:15,888 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:15,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:15,893 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:15,899 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:15,899 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:15,911 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:15,911 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0f8a1ba5-8ecb-45e2-ada4-08506e0d168d/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:15,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:15,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:16,602 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:16,604 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:16,604 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:16,604 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:16,604 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:16,604 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:16,604 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:16,604 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:16,605 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:16,605 INFO L131 ssoRankerPreferences]: Filename of dumped script: BrockschmidtCookFuhs-CAV2013-Fig9a.c_Iteration4_Lasso [2019-10-22 08:54:16,605 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:16,605 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:16,606 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 08:54:16,608 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 08:54:16,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:54:16,611 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 08:54:16,613 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 08:54:16,614 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 08:54:16,616 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 08:54:16,626 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 08:54:16,692 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:16,692 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:16,692 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 08:54:16,693 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:16,693 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:16,693 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:16,693 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:16,693 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:16,694 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:16,694 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:16,694 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:16,694 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 08:54:16,695 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:16,695 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:16,695 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:16,695 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:16,695 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:16,696 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:16,696 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:16,696 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:16,697 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 08:54:16,697 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:16,697 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:16,698 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:16,698 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:16,698 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:16,698 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:16,698 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:16,699 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:16,699 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 08:54:16,700 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:16,700 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:16,700 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:16,700 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:16,700 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:16,701 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:16,701 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:16,701 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:16,702 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 08:54:16,702 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:16,702 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:16,703 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:16,703 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:16,703 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:16,703 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:16,703 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:16,704 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:16,704 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 08:54:16,705 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:16,705 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:16,705 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:16,705 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:16,706 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:16,706 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:16,708 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:16,709 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 08:54:16,709 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:16,710 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:16,710 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:16,710 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:16,711 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:16,711 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:16,724 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:16,730 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:54:16,730 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:54:16,734 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:16,735 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2019-10-22 08:54:16,736 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:16,736 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 2*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~k~0 - 1 >= 0] [2019-10-22 08:54:16,744 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2019-10-22 08:54:16,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:54:16,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,791 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:54:16,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:16,791 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 08:54:16,791 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:54:16,792 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:54:16,812 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2019-10-22 08:54:16,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:54:16,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2019-10-22 08:54:16,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2019-10-22 08:54:16,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:16,814 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:54:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:54:16,839 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,852 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:54:16,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:16,853 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 08:54:16,853 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:54:16,853 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:54:16,874 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 12 states and 15 transitions. Complement of second has 6 states. [2019-10-22 08:54:16,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:54:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2019-10-22 08:54:16,876 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 7 letters. Loop has 1 letters. [2019-10-22 08:54:16,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:16,876 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:54:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,896 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:54:16,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:16,905 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:54:16,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:16,905 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 08:54:16,906 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-10-22 08:54:16,906 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-10-22 08:54:16,929 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 12 transitions. Complement of second has 5 states. [2019-10-22 08:54:16,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:54:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-10-22 08:54:16,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2019-10-22 08:54:16,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:16,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 1 letters. [2019-10-22 08:54:16,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:16,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2019-10-22 08:54:16,932 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:16,932 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2019-10-22 08:54:16,932 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:54:16,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2019-10-22 08:54:16,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:54:16,933 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:54:16,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:54:16,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:54:16,933 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:16,933 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:16,933 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:54:16,933 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:54:16,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:54:16,933 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:54:16,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:54:16,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:54:16 BoogieIcfgContainer [2019-10-22 08:54:16,938 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:54:16,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:16,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:16,938 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:16,939 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12" (3/4) ... [2019-10-22 08:54:16,942 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:54:16,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:16,944 INFO L168 Benchmark]: Toolchain (without parser) took 5074.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 949.8 MB in the beginning and 1.2 GB in the end (delta: -204.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:16,944 INFO L168 Benchmark]: CDTParser took 0.17 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 08:54:16,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 949.8 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:16,945 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:16,945 INFO L168 Benchmark]: Boogie Preprocessor took 14.58 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:16,946 INFO L168 Benchmark]: RCFGBuilder took 194.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:16,946 INFO L168 Benchmark]: BuchiAutomizer took 4531.84 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 102.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.3 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:16,947 INFO L168 Benchmark]: Witness Printer took 3.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:16,949 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 298.33 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 117.4 MB). Free memory was 949.8 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.36 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.58 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 194.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4531.84 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 102.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -63.3 MB). Peak memory consumption was 39.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (1 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * i and consists of 6 locations. One deterministic module has affine ranking function -1 * i + n and consists of 3 locations. One deterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * i + -2 * j + 1 and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 3.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 27 SDtfs, 34 SDslu, 9 SDs, 0 SdLazy, 63 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax157 hnf98 lsp63 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf92 smp100 dnf100 smp100 tf103 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...