./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 31d0c4253184c01eb9f9573658b07bed7aa94585 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 04:57:13,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:57:13,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:57:13,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:57:13,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:57:13,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:57:13,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:57:13,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:57:13,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:57:13,549 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:57:13,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:57:13,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:57:13,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:57:13,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:57:13,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:57:13,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:57:13,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:57:13,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:57:13,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:57:13,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:57:13,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:57:13,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:57:13,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:57:13,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:57:13,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:57:13,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:57:13,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:57:13,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:57:13,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:57:13,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:57:13,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:57:13,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:57:13,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:57:13,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:57:13,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:57:13,581 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:57:13,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:57:13,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:57:13,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:57:13,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:57:13,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:57:13,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 04:57:13,604 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:57:13,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:57:13,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:57:13,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:57:13,606 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:57:13,607 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 04:57:13,607 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 04:57:13,607 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 04:57:13,607 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 04:57:13,607 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 04:57:13,608 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 04:57:13,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:57:13,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 04:57:13,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:57:13,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:57:13,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 04:57:13,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 04:57:13,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 04:57:13,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:57:13,610 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 04:57:13,610 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:57:13,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 04:57:13,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:57:13,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:57:13,611 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 04:57:13,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:57:13,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:57:13,612 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 04:57:13,613 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 04:57:13,613 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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 -> 31d0c4253184c01eb9f9573658b07bed7aa94585 [2019-11-20 04:57:13,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:57:13,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:57:13,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:57:13,841 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:57:13,842 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:57:13,842 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2019-11-20 04:57:13,917 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/data/e506f4d15/faa65d35053f42f0941f3bb5dfd75186/FLAG9f9b298f6 [2019-11-20 04:57:14,381 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:57:14,382 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig2.c [2019-11-20 04:57:14,389 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/data/e506f4d15/faa65d35053f42f0941f3bb5dfd75186/FLAG9f9b298f6 [2019-11-20 04:57:14,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/data/e506f4d15/faa65d35053f42f0941f3bb5dfd75186 [2019-11-20 04:57:14,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:57:14,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:57:14,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:57:14,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:57:14,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:57:14,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:57:14" (1/1) ... [2019-11-20 04:57:14,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60b89ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:14, skipping insertion in model container [2019-11-20 04:57:14,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:57:14" (1/1) ... [2019-11-20 04:57:14,742 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:57:14,758 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:57:14,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:57:14,914 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:57:14,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:57:15,022 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:57:15,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15 WrapperNode [2019-11-20 04:57:15,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:57:15,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:57:15,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:57:15,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:57:15,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:57:15,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:57:15,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:57:15,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:57:15,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... [2019-11-20 04:57:15,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:57:15,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:57:15,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:57:15,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:57:15,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:15,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:57:15,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:57:15,312 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:57:15,312 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 04:57:15,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:57:15 BoogieIcfgContainer [2019-11-20 04:57:15,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:57:15,314 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 04:57:15,314 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 04:57:15,318 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 04:57:15,319 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:57:15,319 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 04:57:14" (1/3) ... [2019-11-20 04:57:15,320 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d46b4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:57:15, skipping insertion in model container [2019-11-20 04:57:15,320 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:57:15,321 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:57:15" (2/3) ... [2019-11-20 04:57:15,321 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5d46b4dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 04:57:15, skipping insertion in model container [2019-11-20 04:57:15,322 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 04:57:15,322 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:57:15" (3/3) ... [2019-11-20 04:57:15,324 INFO L371 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig2.c [2019-11-20 04:57:15,371 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 04:57:15,371 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 04:57:15,371 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 04:57:15,371 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:57:15,372 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:57:15,372 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 04:57:15,372 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:57:15,372 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 04:57:15,383 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 04:57:15,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 04:57:15,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:15,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:15,411 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:15,411 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 04:57:15,411 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 04:57:15,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2019-11-20 04:57:15,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 04:57:15,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:15,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:15,413 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:15,413 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 04:57:15,419 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L19-2true [2019-11-20 04:57:15,419 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 9#L21-2true assume !(main_~x2~0 > 1); 8#L21-3true main_~x1~0 := 1 + main_~x1~0; 6#L19-2true [2019-11-20 04:57:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:15,425 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 04:57:15,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:15,432 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345880723] [2019-11-20 04:57:15,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:15,517 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:15,518 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2019-11-20 04:57:15,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:15,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716065304] [2019-11-20 04:57:15,519 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:15,603 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 04:57:15,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716065304] [2019-11-20 04:57:15,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:57:15,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-20 04:57:15,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919010477] [2019-11-20 04:57:15,616 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:15,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:15,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:57:15,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:57:15,644 INFO L87 Difference]: Start difference. First operand 8 states. Second operand 3 states. [2019-11-20 04:57:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:15,662 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-20 04:57:15,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:57:15,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-20 04:57:15,666 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:57:15,670 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2019-11-20 04:57:15,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2019-11-20 04:57:15,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2019-11-20 04:57:15,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2019-11-20 04:57:15,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:15,673 INFO L688 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-11-20 04:57:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2019-11-20 04:57:15,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-11-20 04:57:15,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 04:57:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2019-11-20 04:57:15,703 INFO L711 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-11-20 04:57:15,703 INFO L591 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2019-11-20 04:57:15,703 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 04:57:15,704 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2019-11-20 04:57:15,704 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 04:57:15,704 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:15,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:15,705 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:15,705 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 04:57:15,706 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 27#L19-2 [2019-11-20 04:57:15,706 INFO L796 eck$LassoCheckResult]: Loop: 27#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 28#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 30#L21-2 assume !(main_~x2~0 > 1); 29#L21-3 main_~x1~0 := 1 + main_~x1~0; 27#L19-2 [2019-11-20 04:57:15,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:15,706 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-20 04:57:15,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:15,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784509800] [2019-11-20 04:57:15,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:15,715 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:15,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2019-11-20 04:57:15,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:15,717 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459027491] [2019-11-20 04:57:15,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:15,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459027491] [2019-11-20 04:57:15,753 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731853100] [2019-11-20 04:57:15,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:57:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:15,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:57:15,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:15,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:57:15,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2019-11-20 04:57:15,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791622615] [2019-11-20 04:57:15,819 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:15,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:15,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 04:57:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 04:57:15,820 INFO L87 Difference]: Start difference. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand 4 states. [2019-11-20 04:57:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:15,856 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2019-11-20 04:57:15,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 04:57:15,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2019-11-20 04:57:15,859 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 04:57:15,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 7 transitions. [2019-11-20 04:57:15,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-11-20 04:57:15,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-11-20 04:57:15,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2019-11-20 04:57:15,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:15,860 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 04:57:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2019-11-20 04:57:15,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-11-20 04:57:15,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-20 04:57:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2019-11-20 04:57:15,862 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 04:57:15,862 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2019-11-20 04:57:15,862 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 04:57:15,862 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2019-11-20 04:57:15,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 04:57:15,863 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:15,863 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:15,863 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:15,863 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2019-11-20 04:57:15,864 INFO L794 eck$LassoCheckResult]: Stem: 53#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 54#L19-2 [2019-11-20 04:57:15,864 INFO L796 eck$LassoCheckResult]: Loop: 54#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 55#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 57#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 58#L21-2 assume !(main_~x2~0 > 1); 56#L21-3 main_~x1~0 := 1 + main_~x1~0; 54#L19-2 [2019-11-20 04:57:15,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:15,864 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-11-20 04:57:15,864 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:15,865 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140677092] [2019-11-20 04:57:15,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:15,872 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:15,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:15,873 INFO L82 PathProgramCache]: Analyzing trace with hash 38449199, now seen corresponding path program 2 times [2019-11-20 04:57:15,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:15,873 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133215688] [2019-11-20 04:57:15,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:15,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133215688] [2019-11-20 04:57:15,933 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394200178] [2019-11-20 04:57:15,933 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:57:15,961 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:57:15,961 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:57:15,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:57:15,964 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:15,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:57:15,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-20 04:57:15,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751679504] [2019-11-20 04:57:15,971 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:15,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:15,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 04:57:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 04:57:15,972 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2019-11-20 04:57:16,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:16,000 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2019-11-20 04:57:16,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 04:57:16,001 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2019-11-20 04:57:16,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 04:57:16,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 8 transitions. [2019-11-20 04:57:16,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 04:57:16,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 04:57:16,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2019-11-20 04:57:16,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:16,003 INFO L688 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 04:57:16,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2019-11-20 04:57:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-20 04:57:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 04:57:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2019-11-20 04:57:16,004 INFO L711 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 04:57:16,004 INFO L591 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2019-11-20 04:57:16,004 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 04:57:16,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2019-11-20 04:57:16,004 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2019-11-20 04:57:16,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:16,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:16,005 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:16,005 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [3, 1, 1, 1] [2019-11-20 04:57:16,005 INFO L794 eck$LassoCheckResult]: Stem: 86#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 87#L19-2 [2019-11-20 04:57:16,005 INFO L796 eck$LassoCheckResult]: Loop: 87#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 88#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 90#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 92#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 91#L21-2 assume !(main_~x2~0 > 1); 89#L21-3 main_~x1~0 := 1 + main_~x1~0; 87#L19-2 [2019-11-20 04:57:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,006 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2019-11-20 04:57:16,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877090326] [2019-11-20 04:57:16,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,012 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1191926928, now seen corresponding path program 3 times [2019-11-20 04:57:16,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,013 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102809231] [2019-11-20 04:57:16,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,085 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102809231] [2019-11-20 04:57:16,086 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020810422] [2019-11-20 04:57:16,086 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:57:16,131 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-20 04:57:16,131 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:57:16,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 04:57:16,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:57:16,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-20 04:57:16,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29319590] [2019-11-20 04:57:16,143 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:16,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:16,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 04:57:16,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 04:57:16,146 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand 6 states. [2019-11-20 04:57:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:16,174 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-11-20 04:57:16,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 04:57:16,175 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-11-20 04:57:16,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 04:57:16,176 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2019-11-20 04:57:16,176 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 04:57:16,176 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-11-20 04:57:16,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2019-11-20 04:57:16,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:16,177 INFO L688 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 04:57:16,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2019-11-20 04:57:16,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 04:57:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 04:57:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-20 04:57:16,179 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 04:57:16,179 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-20 04:57:16,179 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 04:57:16,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2019-11-20 04:57:16,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-20 04:57:16,181 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:16,181 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:16,181 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:16,181 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2019-11-20 04:57:16,182 INFO L794 eck$LassoCheckResult]: Stem: 125#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 126#L19-2 [2019-11-20 04:57:16,182 INFO L796 eck$LassoCheckResult]: Loop: 126#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 127#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 129#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 132#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 131#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 130#L21-2 assume !(main_~x2~0 > 1); 128#L21-3 main_~x1~0 := 1 + main_~x1~0; 126#L19-2 [2019-11-20 04:57:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,182 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 5 times [2019-11-20 04:57:16,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,183 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929502673] [2019-11-20 04:57:16,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,190 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:16,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1704969137, now seen corresponding path program 4 times [2019-11-20 04:57:16,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54707196] [2019-11-20 04:57:16,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,300 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54707196] [2019-11-20 04:57:16,301 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025790735] [2019-11-20 04:57:16,301 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:57:16,354 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 04:57:16,355 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:57:16,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 04:57:16,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:57:16,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2019-11-20 04:57:16,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273091547] [2019-11-20 04:57:16,369 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:16,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:16,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 04:57:16,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-20 04:57:16,371 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 7 states. [2019-11-20 04:57:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:16,402 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2019-11-20 04:57:16,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 04:57:16,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2019-11-20 04:57:16,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 04:57:16,405 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2019-11-20 04:57:16,405 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2019-11-20 04:57:16,406 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-20 04:57:16,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2019-11-20 04:57:16,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:16,406 INFO L688 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-20 04:57:16,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2019-11-20 04:57:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-20 04:57:16,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-20 04:57:16,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2019-11-20 04:57:16,408 INFO L711 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-20 04:57:16,408 INFO L591 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2019-11-20 04:57:16,408 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 04:57:16,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2019-11-20 04:57:16,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 04:57:16,409 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:16,409 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:16,409 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:16,409 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [5, 1, 1, 1] [2019-11-20 04:57:16,409 INFO L794 eck$LassoCheckResult]: Stem: 170#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 171#L19-2 [2019-11-20 04:57:16,410 INFO L796 eck$LassoCheckResult]: Loop: 171#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 172#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 174#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 178#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 177#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 176#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 175#L21-2 assume !(main_~x2~0 > 1); 173#L21-3 main_~x1~0 := 1 + main_~x1~0; 171#L19-2 [2019-11-20 04:57:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,410 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 6 times [2019-11-20 04:57:16,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895027264] [2019-11-20 04:57:16,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,427 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:16,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1314433936, now seen corresponding path program 5 times [2019-11-20 04:57:16,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,428 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318710717] [2019-11-20 04:57:16,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318710717] [2019-11-20 04:57:16,515 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287463791] [2019-11-20 04:57:16,515 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:57:16,558 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2019-11-20 04:57:16,558 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:57:16,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 04:57:16,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:16,567 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:57:16,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-11-20 04:57:16,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170015570] [2019-11-20 04:57:16,569 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:16,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:16,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 04:57:16,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-11-20 04:57:16,570 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand 8 states. [2019-11-20 04:57:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:16,602 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2019-11-20 04:57:16,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 04:57:16,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2019-11-20 04:57:16,603 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-20 04:57:16,604 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2019-11-20 04:57:16,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 04:57:16,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 04:57:16,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2019-11-20 04:57:16,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:16,605 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-20 04:57:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2019-11-20 04:57:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-20 04:57:16,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 04:57:16,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-20 04:57:16,607 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-20 04:57:16,607 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-20 04:57:16,607 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 04:57:16,607 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2019-11-20 04:57:16,608 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-20 04:57:16,608 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:16,608 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:16,608 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:16,608 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2019-11-20 04:57:16,609 INFO L794 eck$LassoCheckResult]: Stem: 221#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 222#L19-2 [2019-11-20 04:57:16,609 INFO L796 eck$LassoCheckResult]: Loop: 222#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 223#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 225#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 230#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 229#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 228#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 227#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 226#L21-2 assume !(main_~x2~0 > 1); 224#L21-3 main_~x1~0 := 1 + main_~x1~0; 222#L19-2 [2019-11-20 04:57:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 7 times [2019-11-20 04:57:16,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,610 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387323058] [2019-11-20 04:57:16,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,615 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:16,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2092744593, now seen corresponding path program 6 times [2019-11-20 04:57:16,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777618860] [2019-11-20 04:57:16,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,731 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777618860] [2019-11-20 04:57:16,732 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085600860] [2019-11-20 04:57:16,732 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:57:16,765 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2019-11-20 04:57:16,765 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:57:16,767 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 04:57:16,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:57:16,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-11-20 04:57:16,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473432593] [2019-11-20 04:57:16,779 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:16,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:16,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 04:57:16,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-11-20 04:57:16,780 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand 9 states. [2019-11-20 04:57:16,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:16,808 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2019-11-20 04:57:16,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 04:57:16,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2019-11-20 04:57:16,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 04:57:16,810 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2019-11-20 04:57:16,810 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 04:57:16,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-11-20 04:57:16,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2019-11-20 04:57:16,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:16,811 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-20 04:57:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2019-11-20 04:57:16,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-20 04:57:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-20 04:57:16,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2019-11-20 04:57:16,813 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-20 04:57:16,813 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2019-11-20 04:57:16,813 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 04:57:16,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2019-11-20 04:57:16,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 04:57:16,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:16,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:16,815 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:16,815 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [7, 1, 1, 1] [2019-11-20 04:57:16,815 INFO L794 eck$LassoCheckResult]: Stem: 278#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 279#L19-2 [2019-11-20 04:57:16,815 INFO L796 eck$LassoCheckResult]: Loop: 279#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 280#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 282#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 288#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 287#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 286#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 285#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 284#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 283#L21-2 assume !(main_~x2~0 > 1); 281#L21-3 main_~x1~0 := 1 + main_~x1~0; 279#L19-2 [2019-11-20 04:57:16,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,816 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 8 times [2019-11-20 04:57:16,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026148809] [2019-11-20 04:57:16,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:16,836 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:16,837 INFO L82 PathProgramCache]: Analyzing trace with hash -450571184, now seen corresponding path program 7 times [2019-11-20 04:57:16,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:16,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364644809] [2019-11-20 04:57:16,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:16,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:16,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364644809] [2019-11-20 04:57:16,964 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304849569] [2019-11-20 04:57:16,964 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:57:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:16,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 04:57:17,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:17,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:57:17,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-11-20 04:57:17,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630657141] [2019-11-20 04:57:17,030 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:17,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:17,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 04:57:17,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-11-20 04:57:17,034 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand 10 states. [2019-11-20 04:57:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:17,079 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-20 04:57:17,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 04:57:17,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2019-11-20 04:57:17,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-20 04:57:17,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2019-11-20 04:57:17,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-20 04:57:17,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 04:57:17,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2019-11-20 04:57:17,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:17,082 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-20 04:57:17,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2019-11-20 04:57:17,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-20 04:57:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-20 04:57:17,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-11-20 04:57:17,083 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-20 04:57:17,083 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-11-20 04:57:17,084 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-20 04:57:17,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2019-11-20 04:57:17,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-20 04:57:17,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:17,084 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:17,085 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:17,085 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [8, 1, 1, 1] [2019-11-20 04:57:17,087 INFO L794 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 342#L19-2 [2019-11-20 04:57:17,088 INFO L796 eck$LassoCheckResult]: Loop: 342#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 343#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 345#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 352#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 351#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 350#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 349#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 348#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 347#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 346#L21-2 assume !(main_~x2~0 > 1); 344#L21-3 main_~x1~0 := 1 + main_~x1~0; 342#L19-2 [2019-11-20 04:57:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:17,090 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 9 times [2019-11-20 04:57:17,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:17,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983611728] [2019-11-20 04:57:17,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:17,096 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:17,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:17,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1082803057, now seen corresponding path program 8 times [2019-11-20 04:57:17,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:17,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596489180] [2019-11-20 04:57:17,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:17,199 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596489180] [2019-11-20 04:57:17,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636077636] [2019-11-20 04:57:17,200 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 04:57:17,233 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 04:57:17,234 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 04:57:17,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 04:57:17,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:17,244 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:57:17,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 04:57:17,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-11-20 04:57:17,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16945447] [2019-11-20 04:57:17,249 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-20 04:57:17,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 04:57:17,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 04:57:17,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-11-20 04:57:17,252 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand 11 states. [2019-11-20 04:57:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:57:17,306 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-11-20 04:57:17,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 04:57:17,309 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2019-11-20 04:57:17,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-20 04:57:17,311 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2019-11-20 04:57:17,311 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 04:57:17,311 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-11-20 04:57:17,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2019-11-20 04:57:17,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:17,311 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-20 04:57:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2019-11-20 04:57:17,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-20 04:57:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 04:57:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-11-20 04:57:17,313 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-20 04:57:17,314 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-11-20 04:57:17,314 INFO L424 BuchiCegarLoop]: ======== Iteration 10============ [2019-11-20 04:57:17,314 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2019-11-20 04:57:17,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-20 04:57:17,315 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:17,315 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:17,315 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 04:57:17,315 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2019-11-20 04:57:17,315 INFO L794 eck$LassoCheckResult]: Stem: 410#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 411#L19-2 [2019-11-20 04:57:17,316 INFO L796 eck$LassoCheckResult]: Loop: 411#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 412#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 414#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 422#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 421#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 420#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 419#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 418#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 417#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 416#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 415#L21-2 assume !(main_~x2~0 > 1); 413#L21-3 main_~x1~0 := 1 + main_~x1~0; 411#L19-2 [2019-11-20 04:57:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 10 times [2019-11-20 04:57:17,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:17,316 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098434194] [2019-11-20 04:57:17,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:17,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:17,329 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:17,336 INFO L82 PathProgramCache]: Analyzing trace with hash 792845360, now seen corresponding path program 9 times [2019-11-20 04:57:17,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:17,336 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230029606] [2019-11-20 04:57:17,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:17,372 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:17,375 INFO L82 PathProgramCache]: Analyzing trace with hash 287286735, now seen corresponding path program 1 times [2019-11-20 04:57:17,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:17,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119776767] [2019-11-20 04:57:17,376 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:17,424 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:17,548 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2019-11-20 04:57:17,592 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:57:17,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:57:17,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:57:17,594 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:57:17,594 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:57:17,594 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:17,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:57:17,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:57:17,595 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration10_Loop [2019-11-20 04:57:17,595 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:57:17,595 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:57:17,609 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 04:57:17,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:57:17,623 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 04:57:17,629 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 04:57:17,716 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:57:17,716 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:17,726 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:57:17,727 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:57:17,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:57:17,735 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: [] [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Exception during sending of exit command (exit): Broken pipe No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:17,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:57:17,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:57:17,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:57:17,758 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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:57:17,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:57:17,810 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:57:17,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:57:17,846 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:17,867 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:57:17,870 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:57:17,870 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:57:17,870 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:57:17,870 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:57:17,870 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:57:17,870 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:17,870 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:57:17,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:57:17,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration10_Loop [2019-11-20 04:57:17,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:57:17,871 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:57:17,872 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 04:57:17,898 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 04:57:17,919 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 04:57:17,927 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 04:57:17,997 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:57:18,003 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 04:57:18,014 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 04:57:18,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:57:18,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:57:18,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:57:18,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,024 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:57:18,024 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:57:18,029 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,042 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 04:57:18,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:57:18,051 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:57:18,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:57:18,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:57:18,057 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:57:18,057 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:57:18,063 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,082 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 04:57:18,084 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:57:18,084 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:57:18,085 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:57:18,085 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:57:18,085 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:57:18,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:57:18,087 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 04:57:18,101 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,109 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:57:18,109 INFO L444 ModelExtractionUtils]: 0 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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,122 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:57:18,122 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:57:18,122 INFO L510 LassoAnalysis]: Proved termination. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,123 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x1~0) = -2*ULTIMATE.start_main_~x1~0 + 21 Supporting invariants [] [2019-11-20 04:57:18,133 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 04:57:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:18,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:57:18,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:18,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:57:18,195 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-20 04:57:18,214 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 04:57:18,215 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand 3 states. [2019-11-20 04:57:18,247 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand 3 states. Result 25 states and 28 transitions. Complement of second has 4 states. [2019-11-20 04:57:18,247 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 04:57:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 04:57:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 04:57:18,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 12 letters. [2019-11-20 04:57:18,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:18,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 13 letters. Loop has 12 letters. [2019-11-20 04:57:18,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:18,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 24 letters. [2019-11-20 04:57:18,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:18,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2019-11-20 04:57:18,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:57:18,254 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 27 transitions. [2019-11-20 04:57:18,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 04:57:18,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 04:57:18,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2019-11-20 04:57:18,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:57:18,255 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-20 04:57:18,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2019-11-20 04:57:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2019-11-20 04:57:18,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 04:57:18,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-20 04:57:18,257 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-20 04:57:18,258 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-20 04:57:18,258 INFO L424 BuchiCegarLoop]: ======== Iteration 11============ [2019-11-20 04:57:18,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2019-11-20 04:57:18,258 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:57:18,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:18,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:18,259 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-20 04:57:18,259 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 04:57:18,260 INFO L794 eck$LassoCheckResult]: Stem: 507#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 508#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 510#L21-2 [2019-11-20 04:57:18,260 INFO L796 eck$LassoCheckResult]: Loop: 510#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 510#L21-2 [2019-11-20 04:57:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:18,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-11-20 04:57:18,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:18,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25668389] [2019-11-20 04:57:18,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,267 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:18,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:18,267 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2019-11-20 04:57:18,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:18,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077841698] [2019-11-20 04:57:18,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,273 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:18,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:18,273 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2019-11-20 04:57:18,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:18,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789762162] [2019-11-20 04:57:18,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,280 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:18,296 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:57:18,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:57:18,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:57:18,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:57:18,296 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:57:18,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:57:18,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:57:18,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration11_Loop [2019-11-20 04:57:18,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:57:18,297 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:57:18,298 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 04:57:18,303 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 04:57:18,306 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 04:57:18,359 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:57:18,359 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:57:18,364 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:57:18,368 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:57:18,368 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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:57:18,375 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:57:18,382 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:57:18,382 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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:57:18,390 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:57:18,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:57:18,421 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 04:57:18,423 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:57:18,423 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:57:18,423 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:57:18,423 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:57:18,424 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:57:18,424 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,424 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:57:18,424 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:57:18,424 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration11_Loop [2019-11-20 04:57:18,424 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:57:18,424 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:57:18,425 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 04:57:18,433 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 04:57:18,436 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 04:57:18,499 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:57:18,499 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 04:57:18,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:57:18,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:57:18,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:57:18,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:57:18,527 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:57:18,528 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 04:57:18,533 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,550 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 04:57:18,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:57:18,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:57:18,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:57:18,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:57:18,565 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:57:18,565 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,571 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,592 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 04:57:18,594 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:57:18,594 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:57:18,594 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:57:18,594 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:57:18,594 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:57:18,596 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:57:18,596 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,599 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:57:18,603 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:57:18,603 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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,619 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:57:18,620 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:57:18,620 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:57:18,620 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0) = 1*ULTIMATE.start_main_~x2~0 Supporting invariants [] [2019-11-20 04:57:18,623 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:18,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:57:18,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:18,655 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:57:18,655 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:18,656 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 04:57:18,656 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 04:57:18,656 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 Second operand 2 states. [2019-11-20 04:57:18,669 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 31 states and 36 transitions. Complement of second has 5 states. [2019-11-20 04:57:18,670 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 04:57:18,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 04:57:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 04:57:18,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2019-11-20 04:57:18,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:18,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2019-11-20 04:57:18,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:18,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2019-11-20 04:57:18,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:18,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2019-11-20 04:57:18,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:57:18,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 31 transitions. [2019-11-20 04:57:18,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-20 04:57:18,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-20 04:57:18,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2019-11-20 04:57:18,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 04:57:18,674 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-11-20 04:57:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2019-11-20 04:57:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2019-11-20 04:57:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-20 04:57:18,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-20 04:57:18,676 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 04:57:18,676 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-20 04:57:18,677 INFO L424 BuchiCegarLoop]: ======== Iteration 12============ [2019-11-20 04:57:18,677 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2019-11-20 04:57:18,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-20 04:57:18,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 04:57:18,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 04:57:18,681 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1] [2019-11-20 04:57:18,681 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 04:57:18,681 INFO L794 eck$LassoCheckResult]: Stem: 582#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x1~0, main_~x2~0;havoc main_~x1~0;havoc main_~x2~0;main_~x1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x2~0 := main_#t~nondet1;havoc main_#t~nondet1; 583#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 584#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 588#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 596#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 595#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 594#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 593#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 592#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 591#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 590#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 589#L21-2 assume !(main_~x2~0 > 1); 587#L21-3 main_~x1~0 := 1 + main_~x1~0; 585#L19-2 assume !!(main_~x1~0 <= 10);main_~x2~0 := 10; 586#L21-2 [2019-11-20 04:57:18,681 INFO L796 eck$LassoCheckResult]: Loop: 586#L21-2 assume !!(main_~x2~0 > 1);main_~x2~0 := main_~x2~0 - 1; 586#L21-2 [2019-11-20 04:57:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:18,682 INFO L82 PathProgramCache]: Analyzing trace with hash 315954203, now seen corresponding path program 2 times [2019-11-20 04:57:18,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:18,682 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415821] [2019-11-20 04:57:18,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,700 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:18,700 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2019-11-20 04:57:18,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:18,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22995250] [2019-11-20 04:57:18,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:18,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,705 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:18,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1204645720, now seen corresponding path program 3 times [2019-11-20 04:57:18,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:57:18,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112579126] [2019-11-20 04:57:18,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:57:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:57:18,738 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:57:18,755 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:57:18,755 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:57:18,755 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:57:18,755 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:57:18,755 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 04:57:18,756 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,756 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:57:18,756 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:57:18,756 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration12_Loop [2019-11-20 04:57:18,756 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:57:18,756 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:57:18,757 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 04:57:18,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 04:57:18,772 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 04:57:18,828 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:57:18,828 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:57:18,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:57:18,838 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 04:57:18,838 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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 04:57:18,850 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 04:57:18,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 04:57:18,875 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,886 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 04:57:18,886 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 04:57:18,886 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 04:57:18,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 04:57:18,886 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 04:57:18,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:18,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 04:57:18,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 04:57:18,887 INFO L133 ssoRankerPreferences]: Filename of dumped script: Urban-WST2013-Fig2.c_Iteration12_Loop [2019-11-20 04:57:18,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 04:57:18,887 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 04:57:18,888 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 04:57:18,893 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 04:57:18,906 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 04:57:18,966 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 04:57:18,966 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,974 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 04:57:18,976 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:57:18,976 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:57:18,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:57:18,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:57:18,980 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 04:57:18,980 INFO L402 nArgumentSynthesizer]: A total of 2 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 04:57:18,985 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:18,994 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 04:57:18,996 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 04:57:18,996 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 04:57:18,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 04:57:18,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 04:57:18,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 04:57:18,998 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 04:57:18,999 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:19,002 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 04:57:19,005 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 04:57:19,005 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_a784b6fc-4a35-4f98-b374-49b9d38c18f6/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 04:57:19,014 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 04:57:19,014 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 04:57:19,015 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 04:57:19,015 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0) = 1*ULTIMATE.start_main_~x2~0 Supporting invariants [] [2019-11-20 04:57:19,026 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 04:57:19,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:19,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:19,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:57:19,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:19,065 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:57:19,065 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:19,065 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 04:57:19,066 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 04:57:19,066 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 04:57:19,079 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 29 states and 33 transitions. Complement of second has 5 states. [2019-11-20 04:57:19,081 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 04:57:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 04:57:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 04:57:19,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-20 04:57:19,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:19,082 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:57:19,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:19,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:57:19,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:19,116 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:57:19,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:19,117 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 04:57:19,117 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 04:57:19,118 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 04:57:19,126 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 29 states and 33 transitions. Complement of second has 5 states. [2019-11-20 04:57:19,126 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 04:57:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 04:57:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2019-11-20 04:57:19,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-20 04:57:19,127 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:19,127 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 04:57:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:57:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:19,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 04:57:19,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:57:19,163 WARN L253 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:57:19,163 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:57:19,163 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 04:57:19,164 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 04:57:19,164 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand 2 states. [2019-11-20 04:57:19,173 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 18 states and 20 transitions. Complement of second has 4 states. [2019-11-20 04:57:19,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 04:57:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 04:57:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2019-11-20 04:57:19,175 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-20 04:57:19,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:19,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 15 letters. Loop has 1 letters. [2019-11-20 04:57:19,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:19,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2019-11-20 04:57:19,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 04:57:19,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2019-11-20 04:57:19,178 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:57:19,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2019-11-20 04:57:19,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 04:57:19,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 04:57:19,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 04:57:19,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 04:57:19,178 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:57:19,178 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:57:19,178 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:57:19,178 INFO L424 BuchiCegarLoop]: ======== Iteration 13============ [2019-11-20 04:57:19,179 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:57:19,179 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 04:57:19,179 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 04:57:19,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 04:57:19 BoogieIcfgContainer [2019-11-20 04:57:19,187 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 04:57:19,187 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:57:19,187 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:57:19,187 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:57:19,188 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:57:15" (3/4) ... [2019-11-20 04:57:19,192 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:57:19,192 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:57:19,193 INFO L168 Benchmark]: Toolchain (without parser) took 4468.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -71.0 MB). Peak memory consumption was 72.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:57:19,194 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:57:19,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -195.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-11-20 04:57:19,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.96 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 04:57:19,195 INFO L168 Benchmark]: Boogie Preprocessor took 20.24 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 04:57:19,196 INFO L168 Benchmark]: RCFGBuilder took 233.24 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 04:57:19,196 INFO L168 Benchmark]: BuchiAutomizer took 3872.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:57:19,197 INFO L168 Benchmark]: Witness Printer took 4.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:57:19,199 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -195.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.96 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 20.24 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 233.24 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 3872.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 99.0 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.95 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (9 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -2 * x1 + 21 and consists of 3 locations. One deterministic module has affine ranking function x2 and consists of 3 locations. One nondeterministic module has affine ranking function x2 and consists of 3 locations. 9 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 2.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 10. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 10. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 62 SDtfs, 21 SDslu, 50 SDs, 0 SdLazy, 157 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI9 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...