./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 10:30:33,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:30:33,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:30:33,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:30:33,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:30:33,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:30:33,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:30:33,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:30:33,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:30:33,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:30:33,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:30:33,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:30:33,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:30:33,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:30:33,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:30:33,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:30:33,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:30:33,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:30:33,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:30:33,676 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:30:33,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:30:33,680 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:30:33,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:30:33,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:30:33,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:30:33,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:30:33,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:30:33,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:30:33,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:30:33,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:30:33,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:30:33,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:30:33,702 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:30:33,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:30:33,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:30:33,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:30:33,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:30:33,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:30:33,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:30:33,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:30:33,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:30:33,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 10:30:33,744 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:30:33,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:30:33,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:30:33,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:30:33,747 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:30:33,747 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 10:30:33,748 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 10:30:33,748 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 10:30:33,749 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 10:30:33,749 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 10:30:33,750 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 10:30:33,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:30:33,751 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:30:33,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:30:33,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:30:33,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 10:30:33,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 10:30:33,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 10:30:33,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:30:33,753 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 10:30:33,754 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:30:33,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 10:30:33,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:30:33,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:30:33,755 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 10:30:33,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:30:33,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:30:33,755 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 10:30:33,757 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 10:30:33,757 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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 -> 41d35d9d9785c70c81ceac96efa22b5a4097e6f4 [2019-11-20 10:30:33,949 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:30:33,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:30:33,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:30:33,972 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:30:33,973 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:30:33,974 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2019-11-20 10:30:34,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/data/9f3b0f72a/88c2d0cb2e294edaaee930b6e9e6273d/FLAG596042d4c [2019-11-20 10:30:34,502 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:30:34,503 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig7b.c [2019-11-20 10:30:34,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/data/9f3b0f72a/88c2d0cb2e294edaaee930b6e9e6273d/FLAG596042d4c [2019-11-20 10:30:34,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/data/9f3b0f72a/88c2d0cb2e294edaaee930b6e9e6273d [2019-11-20 10:30:34,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:30:34,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:30:34,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:30:34,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:30:34,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:30:34,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:34" (1/1) ... [2019-11-20 10:30:34,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7006881d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:34, skipping insertion in model container [2019-11-20 10:30:34,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:30:34" (1/1) ... [2019-11-20 10:30:34,883 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:30:34,899 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:30:35,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:30:35,088 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:30:35,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:30:35,197 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:30:35,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35 WrapperNode [2019-11-20 10:30:35,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:30:35,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:30:35,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:30:35,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:30:35,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:30:35,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:30:35,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:30:35,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:30:35,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... [2019-11-20 10:30:35,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:30:35,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:30:35,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:30:35,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:30:35,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:30:35,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:30:35,511 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:30:35,511 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 10:30:35,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:35 BoogieIcfgContainer [2019-11-20 10:30:35,513 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:30:35,513 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 10:30:35,513 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 10:30:35,516 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 10:30:35,517 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:30:35,517 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 10:30:34" (1/3) ... [2019-11-20 10:30:35,518 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60458a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:30:35, skipping insertion in model container [2019-11-20 10:30:35,518 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:30:35,518 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:30:35" (2/3) ... [2019-11-20 10:30:35,519 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60458a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 10:30:35, skipping insertion in model container [2019-11-20 10:30:35,519 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 10:30:35,519 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:35" (3/3) ... [2019-11-20 10:30:35,520 INFO L371 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig7b.c [2019-11-20 10:30:35,610 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 10:30:35,610 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 10:30:35,611 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 10:30:35,611 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:30:35,611 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:30:35,611 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 10:30:35,612 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:30:35,612 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 10:30:35,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 10:30:35,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 10:30:35,671 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:30:35,671 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:30:35,684 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:30:35,684 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:30:35,685 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 10:30:35,685 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 10:30:35,686 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 10:30:35,686 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:30:35,686 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:30:35,686 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 10:30:35,686 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:30:35,693 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L23-2true [2019-11-20 10:30:35,693 INFO L796 eck$LassoCheckResult]: Loop: 4#L23-2true assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 5#L21true assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 4#L23-2true [2019-11-20 10:30:35,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:35,699 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 10:30:35,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:35,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716616141] [2019-11-20 10:30:35,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:35,818 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:35,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2019-11-20 10:30:35,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:35,822 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603327387] [2019-11-20 10:30:35,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:35,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:35,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:35,857 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2019-11-20 10:30:35,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:35,861 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304100724] [2019-11-20 10:30:35,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:35,885 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:35,970 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:35,971 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:35,971 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:35,971 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:35,971 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:30:35,972 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:35,972 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:35,972 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:35,972 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration1_Loop [2019-11-20 10:30:35,972 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:35,973 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:36,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,186 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:36,187 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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 [2019-11-20 10:30:36,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:36,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:36,208 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:36,209 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:36,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:36,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:36,245 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:36,245 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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 [2019-11-20 10:30:36,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:36,261 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:36,282 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:30:36,282 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:36,293 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:30:36,295 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:36,295 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:36,295 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:36,295 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:36,295 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:30:36,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:36,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:36,296 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:36,296 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration1_Loop [2019-11-20 10:30:36,296 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:36,296 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:36,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,426 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:36,432 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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) [2019-11-20 10:30:36,442 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:36,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:36,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:36,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:36,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:36,458 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:30:36,458 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:36,469 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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) [2019-11-20 10:30:36,481 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:36,483 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:36,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:36,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:36,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:36,491 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:30:36,491 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:36,504 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:36,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:36,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:36,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:36,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:36,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:36,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:36,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:36,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:36,535 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:30:36,541 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:30:36,542 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:36,557 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:30:36,558 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:30:36,558 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:30:36,558 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:30:36,564 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:36,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:36,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:36,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:36,621 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:36,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:36,657 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 10:30:36,659 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2019-11-20 10:30:36,730 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 37 states and 48 transitions. Complement of second has 8 states. [2019-11-20 10:30:36,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:30:36,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-20 10:30:36,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 2 letters. [2019-11-20 10:30:36,736 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:36,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 3 letters. Loop has 2 letters. [2019-11-20 10:30:36,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:36,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 1 letters. Loop has 4 letters. [2019-11-20 10:30:36,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:36,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 48 transitions. [2019-11-20 10:30:36,742 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 10:30:36,747 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 13 states and 19 transitions. [2019-11-20 10:30:36,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 10:30:36,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-20 10:30:36,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2019-11-20 10:30:36,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:30:36,750 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2019-11-20 10:30:36,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2019-11-20 10:30:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2019-11-20 10:30:36,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 10:30:36,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-11-20 10:30:36,779 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-20 10:30:36,779 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-11-20 10:30:36,779 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 10:30:36,779 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-11-20 10:30:36,780 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-20 10:30:36,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:30:36,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:30:36,781 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 10:30:36,781 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:30:36,781 INFO L794 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 90#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 82#L21 [2019-11-20 10:30:36,782 INFO L796 eck$LassoCheckResult]: Loop: 82#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 83#L23 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 87#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 82#L21 [2019-11-20 10:30:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:36,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-20 10:30:36,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:36,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037720412] [2019-11-20 10:30:36,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:36,794 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash 44774, now seen corresponding path program 1 times [2019-11-20 10:30:36,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:36,795 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364292995] [2019-11-20 10:30:36,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:36,823 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:36,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:36,826 INFO L82 PathProgramCache]: Analyzing trace with hash 29865565, now seen corresponding path program 1 times [2019-11-20 10:30:36,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:36,827 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80620312] [2019-11-20 10:30:36,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:36,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:36,856 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:36,904 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:36,904 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:36,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:36,905 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:36,905 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:30:36,905 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:36,905 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:36,905 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:36,905 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration2_Loop [2019-11-20 10:30:36,906 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:36,906 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:36,908 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,949 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:36,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,094 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:37,094 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:37,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:37,111 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 [2019-11-20 10:30:37,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:37,117 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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) [2019-11-20 10:30:37,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:37,138 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 [2019-11-20 10:30:37,156 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:37,157 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/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:37,181 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:37,186 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:37,187 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:37,194 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,204 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:30:37,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:37,265 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:30:37,267 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:37,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:37,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:37,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:37,267 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:30:37,267 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:37,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:37,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration2_Loop [2019-11-20 10:30:37,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:37,268 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:37,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,318 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,431 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:37,431 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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) [2019-11-20 10:30:37,446 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:37,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:37,448 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:37,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:37,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:37,456 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:30:37,456 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,463 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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) [2019-11-20 10:30:37,482 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:37,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:37,484 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:37,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:37,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:37,485 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:37,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:37,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,488 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:37,511 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:37,513 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:37,513 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:37,513 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:37,513 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:37,525 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:30:37,525 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,532 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:37,550 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:37,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:37,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:37,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:37,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:37,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:37,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:37,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,559 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:30:37,563 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:30:37,563 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/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) [2019-11-20 10:30:37,579 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:30:37,579 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:30:37,580 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:30:37,580 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 10:30:37,583 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:37,621 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:37,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:37,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:37,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:37,666 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 10:30:37,666 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-11-20 10:30:37,704 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 31 states and 49 transitions. Complement of second has 6 states. [2019-11-20 10:30:37,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:30:37,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2019-11-20 10:30:37,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 3 letters. [2019-11-20 10:30:37,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:37,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 3 letters. [2019-11-20 10:30:37,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:37,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 6 letters. [2019-11-20 10:30:37,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:37,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 49 transitions. [2019-11-20 10:30:37,711 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 10:30:37,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 42 transitions. [2019-11-20 10:30:37,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-20 10:30:37,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 10:30:37,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 42 transitions. [2019-11-20 10:30:37,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:30:37,713 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 42 transitions. [2019-11-20 10:30:37,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 42 transitions. [2019-11-20 10:30:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-20 10:30:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-20 10:30:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 38 transitions. [2019-11-20 10:30:37,725 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 38 transitions. [2019-11-20 10:30:37,725 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 38 transitions. [2019-11-20 10:30:37,726 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 10:30:37,726 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 38 transitions. [2019-11-20 10:30:37,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 10:30:37,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:30:37,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:30:37,730 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 10:30:37,730 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:30:37,730 INFO L794 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 167#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 168#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 164#L23 [2019-11-20 10:30:37,731 INFO L796 eck$LassoCheckResult]: Loop: 164#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 174#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 180#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 164#L23 [2019-11-20 10:30:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:37,731 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2019-11-20 10:30:37,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:37,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079580579] [2019-11-20 10:30:37,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:37,755 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:37,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:37,755 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 1 times [2019-11-20 10:30:37,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:37,756 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44324950] [2019-11-20 10:30:37,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:37,770 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:37,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:37,770 INFO L82 PathProgramCache]: Analyzing trace with hash 925834452, now seen corresponding path program 1 times [2019-11-20 10:30:37,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:37,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405549039] [2019-11-20 10:30:37,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:37,804 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:37,857 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:37,857 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:37,857 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:37,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:37,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:30:37,858 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:37,858 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:37,858 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:37,858 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration3_Loop [2019-11-20 10:30:37,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:37,859 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:37,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,896 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:37,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,021 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:38,021 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:38,048 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:38,048 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,067 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,072 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:38,072 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/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,089 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,094 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:38,095 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,113 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,121 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:38,121 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,149 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:30:38,173 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,252 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:30:38,255 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:38,255 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:38,256 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:38,256 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:38,256 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:30:38,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:38,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:38,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration3_Loop [2019-11-20 10:30:38,257 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:38,257 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:38,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,402 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:38,402 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,407 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:38,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:38,409 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:38,409 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:38,409 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:38,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:38,410 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:38,410 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,416 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,423 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:38,425 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:38,425 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:38,426 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:38,426 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:38,426 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:38,427 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:38,427 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,429 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,436 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:38,438 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:38,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:38,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:38,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:38,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:38,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:38,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,444 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,454 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:38,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:38,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:38,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:38,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:38,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:38,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:38,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,461 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:30:38,470 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:30:38,470 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,475 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:30:38,475 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:30:38,475 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:30:38,475 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,480 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:30:38,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:38,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:38,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:38,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:38,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:38,552 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 10:30:38,552 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 38 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-11-20 10:30:38,592 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 38 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 54 states and 85 transitions. Complement of second has 7 states. [2019-11-20 10:30:38,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:38,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:30:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-20 10:30:38,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-20 10:30:38,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:38,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 10:30:38,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:38,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-20 10:30:38,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:38,596 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 85 transitions. [2019-11-20 10:30:38,599 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 10:30:38,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 49 states and 78 transitions. [2019-11-20 10:30:38,600 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 10:30:38,600 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-20 10:30:38,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 78 transitions. [2019-11-20 10:30:38,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:30:38,601 INFO L688 BuchiCegarLoop]: Abstraction has 49 states and 78 transitions. [2019-11-20 10:30:38,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 78 transitions. [2019-11-20 10:30:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2019-11-20 10:30:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-20 10:30:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 76 transitions. [2019-11-20 10:30:38,607 INFO L711 BuchiCegarLoop]: Abstraction has 47 states and 76 transitions. [2019-11-20 10:30:38,607 INFO L591 BuchiCegarLoop]: Abstraction has 47 states and 76 transitions. [2019-11-20 10:30:38,607 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 10:30:38,607 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 47 states and 76 transitions. [2019-11-20 10:30:38,609 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2019-11-20 10:30:38,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:30:38,610 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:30:38,610 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2019-11-20 10:30:38,610 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 10:30:38,610 INFO L794 eck$LassoCheckResult]: Stem: 292#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 283#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 284#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 289#L23 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~z~0 := main_#t~nondet5;havoc main_#t~nondet5; 318#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 299#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 293#L23 [2019-11-20 10:30:38,611 INFO L796 eck$LassoCheckResult]: Loop: 293#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 294#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 314#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 293#L23 [2019-11-20 10:30:38,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:38,611 INFO L82 PathProgramCache]: Analyzing trace with hash 925832530, now seen corresponding path program 2 times [2019-11-20 10:30:38,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:38,611 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943475930] [2019-11-20 10:30:38,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:38,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:38,625 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:38,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:38,625 INFO L82 PathProgramCache]: Analyzing trace with hash 49336, now seen corresponding path program 2 times [2019-11-20 10:30:38,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:38,626 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828781127] [2019-11-20 10:30:38,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:38,633 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:38,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:38,633 INFO L82 PathProgramCache]: Analyzing trace with hash -803054137, now seen corresponding path program 1 times [2019-11-20 10:30:38,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:38,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287250988] [2019-11-20 10:30:38,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:38,649 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:38,692 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:38,692 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:38,693 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:38,693 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:38,693 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:30:38,693 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,693 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:38,693 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:38,693 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration4_Loop [2019-11-20 10:30:38,693 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:38,693 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:38,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,831 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:38,832 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,837 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,837 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,845 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:38,845 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=0} Honda state: {ULTIMATE.start_main_#t~nondet4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,852 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,861 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:38,861 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=4, ULTIMATE.start_main_#t~nondet6=4} Honda state: {ULTIMATE.start_main_~x~0=4, ULTIMATE.start_main_#t~nondet6=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,868 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,868 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:38,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:38,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:38,889 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:38,889 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:38,900 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,900 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:30:38,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:38,975 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:30:38,976 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:38,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:38,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:38,977 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:38,977 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:30:38,977 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:38,977 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:38,977 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:38,977 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration4_Loop [2019-11-20 10:30:38,977 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:38,977 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:38,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:38,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,095 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:39,096 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:39,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:39,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:39,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:39,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:39,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:39,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:39,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:30:39,112 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:39,125 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:39,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:39,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:39,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:39,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:39,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:39,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:39,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,132 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:39,139 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:39,141 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:39,141 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:39,141 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:39,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:39,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:39,143 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:39,143 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,145 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:30:39,148 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 10:30:39,148 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,152 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:30:39,152 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:30:39,152 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:30:39,153 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] [2019-11-20 10:30:39,154 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:30:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:39,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:39,188 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:39,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:39,194 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:39,220 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 10:30:39,221 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand 4 states. [2019-11-20 10:30:39,244 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand 4 states. Result 65 states and 102 transitions. Complement of second has 7 states. [2019-11-20 10:30:39,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:30:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-20 10:30:39,246 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 10:30:39,246 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:39,246 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:30:39,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:39,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:39,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:39,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:39,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:39,301 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 10:30:39,301 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand 4 states. [2019-11-20 10:30:39,339 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand 4 states. Result 60 states and 95 transitions. Complement of second has 7 states. [2019-11-20 10:30:39,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:39,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:30:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2019-11-20 10:30:39,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 10:30:39,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:39,340 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:30:39,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:39,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:39,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:39,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:39,374 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:39,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:39,398 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 10:30:39,398 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40 Second operand 4 states. [2019-11-20 10:30:39,422 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 47 states and 76 transitions. cyclomatic complexity: 40. Second operand 4 states. Result 88 states and 137 transitions. Complement of second has 9 states. [2019-11-20 10:30:39,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:39,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 10:30:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 10:30:39,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 10:30:39,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:39,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 10:30:39,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:39,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-20 10:30:39,426 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:39,426 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 137 transitions. [2019-11-20 10:30:39,430 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 6 [2019-11-20 10:30:39,431 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 66 states and 103 transitions. [2019-11-20 10:30:39,432 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-20 10:30:39,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-20 10:30:39,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 103 transitions. [2019-11-20 10:30:39,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:30:39,432 INFO L688 BuchiCegarLoop]: Abstraction has 66 states and 103 transitions. [2019-11-20 10:30:39,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 103 transitions. [2019-11-20 10:30:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 38. [2019-11-20 10:30:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-20 10:30:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 61 transitions. [2019-11-20 10:30:39,438 INFO L711 BuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2019-11-20 10:30:39,438 INFO L591 BuchiCegarLoop]: Abstraction has 38 states and 61 transitions. [2019-11-20 10:30:39,438 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 10:30:39,438 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 61 transitions. [2019-11-20 10:30:39,439 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 10:30:39,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:30:39,440 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:30:39,440 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2019-11-20 10:30:39,440 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:30:39,440 INFO L794 eck$LassoCheckResult]: Stem: 681#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 676#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 677#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 682#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 683#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 706#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 672#L23-2 [2019-11-20 10:30:39,440 INFO L796 eck$LassoCheckResult]: Loop: 672#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 671#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 672#L23-2 [2019-11-20 10:30:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash 925834450, now seen corresponding path program 1 times [2019-11-20 10:30:39,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:39,441 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953155811] [2019-11-20 10:30:39,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,454 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2019-11-20 10:30:39,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:39,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323779513] [2019-11-20 10:30:39,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,460 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:39,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,461 INFO L82 PathProgramCache]: Analyzing trace with hash 668676501, now seen corresponding path program 2 times [2019-11-20 10:30:39,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:39,461 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113284281] [2019-11-20 10:30:39,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,475 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:39,506 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:39,506 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:39,506 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:39,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:39,507 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:30:39,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:39,507 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:39,507 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration5_Loop [2019-11-20 10:30:39,507 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:39,507 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:39,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,538 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,608 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:39,609 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:39,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:39,620 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:39,620 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:39,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:39,631 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:39,631 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:39,637 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:39,641 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:39,641 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,646 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:39,646 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:39,650 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:39,650 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=7} Honda state: {ULTIMATE.start_main_#t~nondet3=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:39,655 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:30:39,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:39,674 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:30:39,676 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:39,676 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:39,676 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:39,676 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:39,676 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:30:39,676 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,676 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:39,677 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:39,677 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration5_Loop [2019-11-20 10:30:39,677 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:39,677 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:39,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:39,764 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:39,764 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,769 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:39,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:39,771 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:39,771 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:39,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:39,773 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:30:39,774 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 10:30:39,778 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:39,785 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:39,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:39,787 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:39,787 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:39,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:39,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:39,788 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:39,788 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,792 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:39,801 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:39,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:39,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:39,803 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:39,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:39,805 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:30:39,805 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,810 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 10:30:39,817 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:39,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:39,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:39,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:39,820 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 10:30:39,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:39,821 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 10:30:39,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,824 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,832 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:39,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:39,834 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:39,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:39,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:39,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:39,835 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:39,835 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:30:39,837 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:30:39,839 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 10:30:39,839 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:39,843 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:30:39,843 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:30:39,843 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:30:39,844 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:30:39,845 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:30:39,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:39,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:39,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:39,881 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:39,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:39,893 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 10:30:39,894 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 61 transitions. cyclomatic complexity: 30 Second operand 3 states. [2019-11-20 10:30:39,919 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 61 transitions. cyclomatic complexity: 30. Second operand 3 states. Result 100 states and 153 transitions. Complement of second has 5 states. [2019-11-20 10:30:39,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:30:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-20 10:30:39,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-20 10:30:39,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:39,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-20 10:30:39,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:39,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2019-11-20 10:30:39,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:39,921 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 100 states and 153 transitions. [2019-11-20 10:30:39,924 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 10:30:39,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 100 states to 82 states and 129 transitions. [2019-11-20 10:30:39,927 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 10:30:39,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-11-20 10:30:39,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 129 transitions. [2019-11-20 10:30:39,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 10:30:39,927 INFO L688 BuchiCegarLoop]: Abstraction has 82 states and 129 transitions. [2019-11-20 10:30:39,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states and 129 transitions. [2019-11-20 10:30:39,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 69. [2019-11-20 10:30:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2019-11-20 10:30:39,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 111 transitions. [2019-11-20 10:30:39,935 INFO L711 BuchiCegarLoop]: Abstraction has 69 states and 111 transitions. [2019-11-20 10:30:39,936 INFO L591 BuchiCegarLoop]: Abstraction has 69 states and 111 transitions. [2019-11-20 10:30:39,936 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 10:30:39,936 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states and 111 transitions. [2019-11-20 10:30:39,938 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 10:30:39,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 10:30:39,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 10:30:39,938 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2019-11-20 10:30:39,939 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2019-11-20 10:30:39,939 INFO L794 eck$LassoCheckResult]: Stem: 863#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~nondet6, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 864#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 898#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 910#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 860#L21 assume !(0 != main_#t~nondet3);havoc main_#t~nondet3; 870#L23 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~z~0 := main_~z~0 - 1;main_~x~0 := main_#t~nondet6;havoc main_#t~nondet6; 890#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 886#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 877#L23-2 [2019-11-20 10:30:39,939 INFO L796 eck$LassoCheckResult]: Loop: 877#L23-2 assume !!((main_~x~0 > 0 && main_~y~0 > 0) && main_~z~0 > 0); 876#L21 assume 0 != main_#t~nondet3;havoc main_#t~nondet3;main_~x~0 := main_~x~0 - 1; 877#L23-2 [2019-11-20 10:30:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,940 INFO L82 PathProgramCache]: Analyzing trace with hash 602338671, now seen corresponding path program 3 times [2019-11-20 10:30:39,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:39,940 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463434329] [2019-11-20 10:30:39,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,969 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:39,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2019-11-20 10:30:39,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:39,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567358330] [2019-11-20 10:30:39,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:39,981 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:39,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:39,982 INFO L82 PathProgramCache]: Analyzing trace with hash -973121806, now seen corresponding path program 4 times [2019-11-20 10:30:39,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:30:39,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694326400] [2019-11-20 10:30:39,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:30:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:30:40,011 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:30:40,033 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:40,033 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:40,033 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:40,033 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:40,033 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 10:30:40,034 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,034 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:40,034 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:40,034 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration6_Loop [2019-11-20 10:30:40,034 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:40,034 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:40,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,117 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:40,117 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,125 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:40,125 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:40,129 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:40,129 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,134 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:40,134 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:40,139 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:40,139 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:40,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:40,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:40,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:40,170 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:40,174 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 10:30:40,174 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet3=7} Honda state: {ULTIMATE.start_main_#t~nondet3=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 57 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 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 10:30:40,183 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,191 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 10:30:40,191 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 10:30:40,198 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 10:30:40,199 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 10:30:40,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 10:30:40,200 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 10:30:40,200 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 10:30:40,200 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 10:30:40,200 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,200 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 10:30:40,200 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 10:30:40,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig7b.c_Iteration6_Loop [2019-11-20 10:30:40,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 10:30:40,200 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 10:30:40,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,208 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 10:30:40,285 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 10:30:40,285 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 59 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 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,289 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:40,291 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:40,291 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:40,291 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:40,291 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:40,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:40,292 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:40,292 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:30:40,293 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 60 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 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,301 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:40,303 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:40,303 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:40,303 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:40,303 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:40,305 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 10:30:40,305 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 10:30:40,308 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 61 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 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,313 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:40,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:40,315 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:40,315 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:40,315 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 10:30:40,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:40,316 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 10:30:40,316 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:30:40,318 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 62 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 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,323 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 10:30:40,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 10:30:40,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 10:30:40,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 10:30:40,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 10:30:40,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 10:30:40,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 10:30:40,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 10:30:40,328 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 10:30:40,329 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-11-20 10:30:40,329 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a8266491-54a6-4d50-88f0-db7223221c0f/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 10:30:40,333 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 10:30:40,333 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 10:30:40,333 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 10:30:40,334 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 10:30:40,335 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 10:30:40,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:40,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:40,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:40,364 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:40,364 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:40,373 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 10:30:40,374 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand 3 states. [2019-11-20 10:30:40,395 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand 3 states. Result 109 states and 164 transitions. Complement of second has 5 states. [2019-11-20 10:30:40,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:30:40,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-20 10:30:40,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-20 10:30:40,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:40,397 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:30:40,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:40,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:40,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:40,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:40,427 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:40,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:40,438 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 10:30:40,438 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand 3 states. [2019-11-20 10:30:40,453 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand 3 states. Result 109 states and 164 transitions. Complement of second has 5 states. [2019-11-20 10:30:40,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:30:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-11-20 10:30:40,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-20 10:30:40,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:40,466 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 10:30:40,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:30:40,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:40,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 10:30:40,492 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:40,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:30:40,498 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:30:40,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:30:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:30:40,514 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 10:30:40,514 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56 Second operand 3 states. [2019-11-20 10:30:40,532 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states and 111 transitions. cyclomatic complexity: 56. Second operand 3 states. Result 125 states and 192 transitions. Complement of second has 4 states. [2019-11-20 10:30:40,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 10:30:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 10:30:40,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-20 10:30:40,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 2 letters. [2019-11-20 10:30:40,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:40,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 2 letters. [2019-11-20 10:30:40,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:40,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 8 letters. Loop has 4 letters. [2019-11-20 10:30:40,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 10:30:40,537 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 192 transitions. [2019-11-20 10:30:40,540 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:30:40,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 0 states and 0 transitions. [2019-11-20 10:30:40,541 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 10:30:40,541 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 10:30:40,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 10:30:40,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 10:30:40,541 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:30:40,542 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:30:40,542 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 10:30:40,542 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 10:30:40,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 10:30:40,542 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 10:30:40,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 10:30:40,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 10:30:40 BoogieIcfgContainer [2019-11-20 10:30:40,550 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 10:30:40,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:30:40,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:30:40,551 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:30:40,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:30:35" (3/4) ... [2019-11-20 10:30:40,555 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 10:30:40,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:30:40,558 INFO L168 Benchmark]: Toolchain (without parser) took 5693.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:30:40,558 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:30:40,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -199.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. [2019-11-20 10:30:40,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:30:40,560 INFO L168 Benchmark]: Boogie Preprocessor took 16.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:30:40,561 INFO L168 Benchmark]: RCFGBuilder took 246.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:30:40,561 INFO L168 Benchmark]: BuchiAutomizer took 5036.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -238.4 kB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. [2019-11-20 10:30:40,562 INFO L168 Benchmark]: Witness Printer took 5.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:30:40,564 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -199.1 MB). Peak memory consumption was 23.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 47.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.53 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 246.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5036.74 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 49.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -238.4 kB). Peak memory consumption was 49.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 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 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function z and consists of 4 locations. One deterministic module has affine ranking function x and consists of 3 locations. One nondeterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.9s and 7 iterations. TraceHistogramMax:3. Analysis of lassos took 3.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 69 states and ocurred in iteration 5. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 81 SDtfs, 75 SDslu, 35 SDs, 0 SdLazy, 76 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax153 hnf100 lsp29 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 21 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...