./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD3.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_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 aae625cda61f26fa063b78c3d3a58aff5ded8a89 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 23:07:34,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 23:07:34,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 23:07:34,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 23:07:34,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 23:07:34,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 23:07:34,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 23:07:34,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 23:07:34,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 23:07:34,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 23:07:34,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 23:07:34,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 23:07:34,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 23:07:34,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 23:07:34,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 23:07:34,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 23:07:34,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 23:07:34,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 23:07:34,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 23:07:34,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 23:07:34,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 23:07:34,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 23:07:34,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 23:07:34,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 23:07:34,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 23:07:34,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 23:07:34,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 23:07:34,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 23:07:34,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 23:07:34,683 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 23:07:34,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 23:07:34,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 23:07:34,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 23:07:34,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 23:07:34,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 23:07:34,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 23:07:34,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 23:07:34,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 23:07:34,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 23:07:34,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 23:07:34,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 23:07:34,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 23:07:34,717 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 23:07:34,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 23:07:34,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 23:07:34,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 23:07:34,728 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 23:07:34,728 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 23:07:34,729 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 23:07:34,729 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 23:07:34,729 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 23:07:34,729 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 23:07:34,729 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 23:07:34,730 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 23:07:34,730 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 23:07:34,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 23:07:34,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 23:07:34,731 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 23:07:34,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 23:07:34,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 23:07:34,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 23:07:34,732 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 23:07:34,733 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 23:07:34,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 23:07:34,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 23:07:34,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 23:07:34,733 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 23:07:34,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 23:07:34,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 23:07:34,734 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 23:07:34,735 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 23:07:34,736 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_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 -> aae625cda61f26fa063b78c3d3a58aff5ded8a89 [2019-11-19 23:07:34,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 23:07:34,911 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 23:07:34,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 23:07:34,915 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 23:07:34,915 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 23:07:34,915 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD3.c [2019-11-19 23:07:34,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/data/018d0f5bc/be4c4cf9afc0431ca9a81e1a167821eb/FLAG118315dc4 [2019-11-19 23:07:35,355 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 23:07:35,356 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/sv-benchmarks/c/termination-restricted-15/GCD3.c [2019-11-19 23:07:35,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/data/018d0f5bc/be4c4cf9afc0431ca9a81e1a167821eb/FLAG118315dc4 [2019-11-19 23:07:35,770 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/data/018d0f5bc/be4c4cf9afc0431ca9a81e1a167821eb [2019-11-19 23:07:35,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 23:07:35,774 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 23:07:35,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 23:07:35,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 23:07:35,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 23:07:35,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:35" (1/1) ... [2019-11-19 23:07:35,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d042b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:35, skipping insertion in model container [2019-11-19 23:07:35,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 11:07:35" (1/1) ... [2019-11-19 23:07:35,790 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 23:07:35,806 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 23:07:35,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:07:35,937 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 23:07:36,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 23:07:36,028 INFO L192 MainTranslator]: Completed translation [2019-11-19 23:07:36,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36 WrapperNode [2019-11-19 23:07:36,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 23:07:36,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 23:07:36,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 23:07:36,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 23:07:36,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,062 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 23:07:36,063 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 23:07:36,063 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 23:07:36,063 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 23:07:36,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... [2019-11-19 23:07:36,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 23:07:36,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 23:07:36,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 23:07:36,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 23:07:36,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 [2019-11-19 23:07:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 23:07:36,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 23:07:36,364 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 23:07:36,364 INFO L285 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-19 23:07:36,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:36 BoogieIcfgContainer [2019-11-19 23:07:36,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 23:07:36,366 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 23:07:36,366 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 23:07:36,370 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 23:07:36,370 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:07:36,371 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 11:07:35" (1/3) ... [2019-11-19 23:07:36,372 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@89830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:07:36, skipping insertion in model container [2019-11-19 23:07:36,372 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:07:36,372 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 11:07:36" (2/3) ... [2019-11-19 23:07:36,373 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@89830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 11:07:36, skipping insertion in model container [2019-11-19 23:07:36,373 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 23:07:36,373 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:36" (3/3) ... [2019-11-19 23:07:36,375 INFO L371 chiAutomizerObserver]: Analyzing ICFG GCD3.c [2019-11-19 23:07:36,426 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 23:07:36,426 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 23:07:36,426 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 23:07:36,427 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 23:07:36,427 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 23:07:36,428 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 23:07:36,428 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 23:07:36,428 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 23:07:36,445 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-19 23:07:36,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-19 23:07:36,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:07:36,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:07:36,475 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:07:36,475 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-19 23:07:36,475 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 23:07:36,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-11-19 23:07:36,478 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-19 23:07:36,478 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:07:36,478 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:07:36,478 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:07:36,479 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2019-11-19 23:07:36,486 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L13-2true [2019-11-19 23:07:36,487 INFO L796 eck$LassoCheckResult]: Loop: 11#L13-2true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 3#L17true assume 0 == main_~y~0;main_~y~0 := main_~y~0; 7#L21-2true assume !(main_~xtmp~0 > 0); 5#L31-2true assume !true; 4#L31-3true main_~y~0 := main_~xtmp~0; 15#L25-1true main_~x~0 := main_~tmp~0; 11#L13-2true [2019-11-19 23:07:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-19 23:07:36,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:36,501 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968320009] [2019-11-19 23:07:36,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:36,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,599 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1187012529, now seen corresponding path program 1 times [2019-11-19 23:07:36,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:36,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612511171] [2019-11-19 23:07:36,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:36,670 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612511171] [2019-11-19 23:07:36,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:07:36,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:07:36,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747902725] [2019-11-19 23:07:36,679 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-19 23:07:36,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:07:36,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:07:36,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:07:36,697 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2019-11-19 23:07:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:07:36,778 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2019-11-19 23:07:36,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:07:36,781 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2019-11-19 23:07:36,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-19 23:07:36,788 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2019-11-19 23:07:36,789 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-19 23:07:36,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-19 23:07:36,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2019-11-19 23:07:36,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:07:36,800 INFO L688 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-19 23:07:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2019-11-19 23:07:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-19 23:07:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-19 23:07:36,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2019-11-19 23:07:36,827 INFO L711 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-19 23:07:36,827 INFO L591 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2019-11-19 23:07:36,827 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 23:07:36,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2019-11-19 23:07:36,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-11-19 23:07:36,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:07:36,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:07:36,828 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:07:36,829 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:36,829 INFO L794 eck$LassoCheckResult]: Stem: 39#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 40#L13-2 [2019-11-19 23:07:36,829 INFO L796 eck$LassoCheckResult]: Loop: 40#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 41#L17 assume !(0 == main_~y~0); 37#L21 assume !(main_~y~0 < 0); 38#L21-2 assume !(main_~xtmp~0 > 0); 45#L31-2 assume !(main_~xtmp~0 < 0); 42#L31-3 main_~y~0 := main_~xtmp~0; 43#L25-1 main_~x~0 := main_~tmp~0; 40#L13-2 [2019-11-19 23:07:36,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:36,829 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2019-11-19 23:07:36,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:36,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361743487] [2019-11-19 23:07:36,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:36,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,836 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:36,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:36,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1817939337, now seen corresponding path program 1 times [2019-11-19 23:07:36,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:36,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795025599] [2019-11-19 23:07:36,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:36,857 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795025599] [2019-11-19 23:07:36,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 23:07:36,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 23:07:36,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189789753] [2019-11-19 23:07:36,858 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-11-19 23:07:36,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:07:36,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 23:07:36,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 23:07:36,859 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2019-11-19 23:07:36,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:07:36,878 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-11-19 23:07:36,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 23:07:36,879 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2019-11-19 23:07:36,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2019-11-19 23:07:36,880 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2019-11-19 23:07:36,880 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2019-11-19 23:07:36,880 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-19 23:07:36,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2019-11-19 23:07:36,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:07:36,881 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2019-11-19 23:07:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2019-11-19 23:07:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2019-11-19 23:07:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-19 23:07:36,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2019-11-19 23:07:36,883 INFO L711 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-19 23:07:36,883 INFO L591 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2019-11-19 23:07:36,883 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 23:07:36,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2019-11-19 23:07:36,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-19 23:07:36,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:07:36,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:07:36,884 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-19 23:07:36,884 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:36,884 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L13-2 [2019-11-19 23:07:36,885 INFO L796 eck$LassoCheckResult]: Loop: 68#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 69#L17 assume !(0 == main_~y~0); 65#L21 assume !(main_~y~0 < 0); 66#L21-2 assume main_~xtmp~0 > 0; 72#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 70#L26-3 main_~y~0 := main_~xtmp~0; 71#L25-1 main_~x~0 := main_~tmp~0; 68#L13-2 [2019-11-19 23:07:36,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:36,885 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2019-11-19 23:07:36,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:36,886 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738630966] [2019-11-19 23:07:36,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:36,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,891 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1818401082, now seen corresponding path program 1 times [2019-11-19 23:07:36,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:36,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223175597] [2019-11-19 23:07:36,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,909 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:36,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:36,909 INFO L82 PathProgramCache]: Analyzing trace with hash 669111751, now seen corresponding path program 1 times [2019-11-19 23:07:36,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:36,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297331909] [2019-11-19 23:07:36,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:36,923 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:37,018 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:37,018 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:37,019 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:37,019 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:37,019 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:07:37,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:37,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:37,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:37,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration3_Loop [2019-11-19 23:07:37,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:37,020 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:37,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:37,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:37,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:37,236 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-11-19 23:07:37,283 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:37,284 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:37,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:37,302 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:07:37,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:07:37,312 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:07:37,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:37,329 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:37,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:07:37,334 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_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:37,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:37,342 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:07:37,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:07:37,366 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,022 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:07:41,024 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:41,025 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:41,025 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:41,025 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:41,025 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:07:41,025 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,025 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:41,026 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:41,026 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration3_Loop [2019-11-19 23:07:41,026 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:41,026 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:41,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,161 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:41,165 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,177 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 [2019-11-19 23:07:41,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:41,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:41,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:41,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:41,187 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:07:41,187 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:07:41,197 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,205 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 [2019-11-19 23:07:41,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:41,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:41,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:41,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:41,210 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:07:41,210 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:07:41,217 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,229 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 [2019-11-19 23:07:41,231 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:41,231 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:07:41,232 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:41,232 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:41,232 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:41,235 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:07:41,235 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:07:41,239 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:07:41,245 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:07:41,245 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:07:41,265 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:07:41,265 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:07:41,265 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:07:41,266 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,286 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:07:41,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:41,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:07:41,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:41,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:07:41,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:41,395 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-19 23:07:41,396 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 6 states. [2019-11-19 23:07:41,476 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 27 states and 32 transitions. Complement of second has 9 states. [2019-11-19 23:07:41,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-19 23:07:41,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-11-19 23:07:41,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2019-11-19 23:07:41,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 7 letters. [2019-11-19 23:07:41,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:41,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 8 letters. Loop has 7 letters. [2019-11-19 23:07:41,480 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:41,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 14 letters. [2019-11-19 23:07:41,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:41,481 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2019-11-19 23:07:41,483 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2019-11-19 23:07:41,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2019-11-19 23:07:41,484 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-19 23:07:41,484 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2019-11-19 23:07:41,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2019-11-19 23:07:41,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:07:41,484 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-19 23:07:41,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2019-11-19 23:07:41,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2019-11-19 23:07:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-19 23:07:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2019-11-19 23:07:41,487 INFO L711 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-19 23:07:41,487 INFO L591 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2019-11-19 23:07:41,487 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 23:07:41,487 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 24 transitions. [2019-11-19 23:07:41,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-19 23:07:41,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:07:41,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:07:41,489 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-19 23:07:41,489 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-19 23:07:41,489 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 159#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 161#L17 assume !(0 == main_~y~0); 174#L21 assume !(main_~y~0 < 0); 173#L21-2 assume main_~xtmp~0 > 0; 169#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2019-11-19 23:07:41,489 INFO L796 eck$LassoCheckResult]: Loop: 170#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2019-11-19 23:07:41,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:41,489 INFO L82 PathProgramCache]: Analyzing trace with hash 925834904, now seen corresponding path program 1 times [2019-11-19 23:07:41,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:41,490 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258816524] [2019-11-19 23:07:41,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:41,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:41,502 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:41,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:41,503 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2019-11-19 23:07:41,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:41,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778505822] [2019-11-19 23:07:41,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:41,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:41,508 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:41,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:41,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889015, now seen corresponding path program 2 times [2019-11-19 23:07:41,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:41,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879714744] [2019-11-19 23:07:41,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:41,523 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:41,609 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:41,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:41,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:41,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:41,609 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:07:41,610 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:41,610 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:41,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration4_Lasso [2019-11-19 23:07:41,610 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:41,610 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:41,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:41,762 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:41,762 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:07:41,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:41,775 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,782 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:07:41,782 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_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:07:41,797 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:41,797 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:07:41,801 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:41,810 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:41,832 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:07:41,832 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:07:42,044 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:07:42,047 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:42,048 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:42,048 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:42,048 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:42,048 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:07:42,048 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:42,048 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:42,049 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:42,049 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration4_Lasso [2019-11-19 23:07:42,049 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:42,049 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:42,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,173 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:42,173 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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) [2019-11-19 23:07:42,190 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 [2019-11-19 23:07:42,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:42,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:42,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:42,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:42,197 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:07:42,197 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:42,202 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 [2019-11-19 23:07:42,221 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 [2019-11-19 23:07:42,223 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:42,223 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:42,223 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:42,223 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:42,235 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:07:42,235 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:07:42,243 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:07:42,252 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-19 23:07:42,252 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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) [2019-11-19 23:07:42,270 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:42,274 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-11-19 23:07:42,274 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:07:42,274 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0, 1*ULTIMATE.start_main_~xtmp~0 >= 0] [2019-11-19 23:07:42,282 INFO L297 tatePredicateManager]: 1 out of 2 supporting invariants were superfluous and have been removed [2019-11-19 23:07:42,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:42,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 23:07:42,334 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:42,346 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:07:42,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:42,347 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-19 23:07:42,348 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5 Second operand 3 states. [2019-11-19 23:07:42,388 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 31 transitions. Complement of second has 6 states. [2019-11-19 23:07:42,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:07:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:07:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2019-11-19 23:07:42,389 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 1 letters. [2019-11-19 23:07:42,389 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:42,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 1 letters. [2019-11-19 23:07:42,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:42,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2019-11-19 23:07:42,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:42,390 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 31 transitions. [2019-11-19 23:07:42,391 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-19 23:07:42,392 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2019-11-19 23:07:42,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2019-11-19 23:07:42,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-19 23:07:42,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2019-11-19 23:07:42,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:07:42,393 INFO L688 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-19 23:07:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2019-11-19 23:07:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-11-19 23:07:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-19 23:07:42,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-11-19 23:07:42,395 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-11-19 23:07:42,395 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-11-19 23:07:42,395 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 23:07:42,395 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2019-11-19 23:07:42,396 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-11-19 23:07:42,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:07:42,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:07:42,397 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:42,397 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:42,397 INFO L794 eck$LassoCheckResult]: Stem: 260#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 261#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 275#L17 assume !(0 == main_~y~0); 278#L21 assume !(main_~y~0 < 0); 277#L21-2 assume main_~xtmp~0 > 0; 276#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 274#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 266#L26-3 [2019-11-19 23:07:42,397 INFO L796 eck$LassoCheckResult]: Loop: 266#L26-3 main_~y~0 := main_~xtmp~0; 267#L25-1 main_~x~0 := main_~tmp~0; 262#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 263#L17 assume !(0 == main_~y~0); 256#L21 assume !(main_~y~0 < 0); 257#L21-2 assume main_~xtmp~0 > 0; 270#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 266#L26-3 [2019-11-19 23:07:42,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:42,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 1 times [2019-11-19 23:07:42,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:42,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016341848] [2019-11-19 23:07:42,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:42,410 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:42,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:42,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1776384388, now seen corresponding path program 2 times [2019-11-19 23:07:42,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:42,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905113311] [2019-11-19 23:07:42,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:42,419 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190014, now seen corresponding path program 1 times [2019-11-19 23:07:42,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:42,420 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434763253] [2019-11-19 23:07:42,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:42,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434763253] [2019-11-19 23:07:42,495 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416152302] [2019-11-19 23:07:42,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 23:07:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:42,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:07:42,524 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:42,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:42,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 23:07:42,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2019-11-19 23:07:42,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683496110] [2019-11-19 23:07:42,586 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:42,586 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:42,586 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:42,586 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:42,586 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:07:42,587 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:42,587 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:42,587 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:42,587 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration5_Loop [2019-11-19 23:07:42,587 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:42,587 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:42,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,591 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:42,680 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:42,680 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 [2019-11-19 23:07:42,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:42,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:07:42,704 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:07:42,704 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_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:07:42,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:42,729 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 [2019-11-19 23:07:42,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:07:42,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:07:45,218 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:07:45,220 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:45,220 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:45,220 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:45,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:45,221 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:07:45,221 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:45,221 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:45,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:45,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration5_Loop [2019-11-19 23:07:45,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:45,221 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:45,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:45,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:45,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:45,369 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:45,369 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 [2019-11-19 23:07:45,379 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 [2019-11-19 23:07:45,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:45,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:45,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:45,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:45,382 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:07:45,383 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:07:45,386 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 [2019-11-19 23:07:45,392 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-19 23:07:45,394 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:45,394 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:07:45,394 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:45,394 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:45,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:45,396 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:07:45,396 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:07:45,400 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:07:45,404 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:07:45,404 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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) [2019-11-19 23:07:45,408 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:07:45,408 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:07:45,408 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:07:45,408 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:45,418 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:07:45,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:45,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:07:45,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:45,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:07:45,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:45,471 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-19 23:07:45,471 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-11-19 23:07:45,518 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 58 states and 72 transitions. Complement of second has 8 states. [2019-11-19 23:07:45,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-11-19 23:07:45,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 23:07:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2019-11-19 23:07:45,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 7 letters. [2019-11-19 23:07:45,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:45,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 7 letters. [2019-11-19 23:07:45,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:45,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 14 letters. [2019-11-19 23:07:45,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:45,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 72 transitions. [2019-11-19 23:07:45,522 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-19 23:07:45,523 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 53 states and 67 transitions. [2019-11-19 23:07:45,523 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-11-19 23:07:45,523 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2019-11-19 23:07:45,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 67 transitions. [2019-11-19 23:07:45,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:07:45,523 INFO L688 BuchiCegarLoop]: Abstraction has 53 states and 67 transitions. [2019-11-19 23:07:45,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 67 transitions. [2019-11-19 23:07:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2019-11-19 23:07:45,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-11-19 23:07:45,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2019-11-19 23:07:45,528 INFO L711 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2019-11-19 23:07:45,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 23:07:45,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 23:07:45,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-19 23:07:45,528 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 8 states. [2019-11-19 23:07:45,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 23:07:45,668 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2019-11-19 23:07:45,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 23:07:45,669 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2019-11-19 23:07:45,670 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-19 23:07:45,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 31 states and 37 transitions. [2019-11-19 23:07:45,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2019-11-19 23:07:45,671 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2019-11-19 23:07:45,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2019-11-19 23:07:45,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:07:45,672 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2019-11-19 23:07:45,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2019-11-19 23:07:45,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-11-19 23:07:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-19 23:07:45,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-11-19 23:07:45,675 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-19 23:07:45,675 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-11-19 23:07:45,675 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-19 23:07:45,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2019-11-19 23:07:45,676 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-19 23:07:45,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:07:45,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:07:45,677 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:45,677 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 23:07:45,677 INFO L794 eck$LassoCheckResult]: Stem: 563#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 564#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 580#L17 assume !(0 == main_~y~0); 579#L21 assume !(main_~y~0 < 0); 578#L21-2 assume main_~xtmp~0 > 0; 577#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 576#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 567#L26-3 [2019-11-19 23:07:45,677 INFO L796 eck$LassoCheckResult]: Loop: 567#L26-3 main_~y~0 := main_~xtmp~0; 568#L25-1 main_~x~0 := main_~tmp~0; 565#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 566#L17 assume !(0 == main_~y~0); 561#L21 assume !(main_~y~0 < 0); 562#L21-2 assume main_~xtmp~0 > 0; 569#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 570#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 567#L26-3 [2019-11-19 23:07:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:45,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 2 times [2019-11-19 23:07:45,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:45,678 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331932809] [2019-11-19 23:07:45,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:45,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:45,688 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:45,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:45,689 INFO L82 PathProgramCache]: Analyzing trace with hash -766658727, now seen corresponding path program 1 times [2019-11-19 23:07:45,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:45,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532291395] [2019-11-19 23:07:45,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:45,698 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:45,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1189119455, now seen corresponding path program 2 times [2019-11-19 23:07:45,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:45,699 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907433550] [2019-11-19 23:07:45,699 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:45,719 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:45,757 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:45,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:45,757 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:45,757 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:45,758 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:07:45,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:45,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:45,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:45,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration6_Loop [2019-11-19 23:07:45,758 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:45,758 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:45,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:45,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:45,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:45,842 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:45,842 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:45,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:45,847 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:45,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:07:45,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:07:47,938 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:07:47,940 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:47,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:47,941 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:47,941 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:47,941 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:07:47,941 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:47,941 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:47,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:47,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration6_Loop [2019-11-19 23:07:47,941 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:47,941 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:47,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:47,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:47,957 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,004 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:48,005 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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 [2019-11-19 23:07:48,008 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 [2019-11-19 23:07:48,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:48,010 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:07:48,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:48,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:48,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:48,012 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:07:48,012 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:07:48,014 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:07:48,017 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 23:07:48,017 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,020 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 23:07:48,021 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 23:07:48,021 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:07:48,021 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2019-11-19 23:07:48,022 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 23:07:48,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:48,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,045 INFO L255 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-19 23:07:48,061 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-19 23:07:48,061 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-19 23:07:48,095 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 54 transitions. Complement of second has 6 states. [2019-11-19 23:07:48,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-19 23:07:48,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 23:07:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-19 23:07:48,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2019-11-19 23:07:48,096 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:48,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 8 letters. [2019-11-19 23:07:48,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:48,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 16 letters. [2019-11-19 23:07:48,097 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:48,097 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2019-11-19 23:07:48,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-19 23:07:48,098 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 45 transitions. [2019-11-19 23:07:48,099 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-19 23:07:48,099 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-11-19 23:07:48,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2019-11-19 23:07:48,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 23:07:48,099 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-11-19 23:07:48,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2019-11-19 23:07:48,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2019-11-19 23:07:48,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-19 23:07:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-19 23:07:48,101 INFO L711 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-19 23:07:48,101 INFO L591 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-19 23:07:48,101 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-19 23:07:48,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2019-11-19 23:07:48,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-19 23:07:48,101 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 23:07:48,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 23:07:48,102 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-19 23:07:48,102 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-19 23:07:48,102 INFO L794 eck$LassoCheckResult]: Stem: 703#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 704#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 722#L17 assume !(0 == main_~y~0); 721#L21 assume !(main_~y~0 < 0); 720#L21-2 assume main_~xtmp~0 > 0; 719#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 718#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 716#L26-3 main_~y~0 := main_~xtmp~0; 712#L25-1 main_~x~0 := main_~tmp~0; 705#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 706#L17 assume !(0 == main_~y~0); 699#L21 assume !(main_~y~0 < 0); 700#L21-2 assume main_~xtmp~0 > 0; 713#L26-2 [2019-11-19 23:07:48,102 INFO L796 eck$LassoCheckResult]: Loop: 713#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 713#L26-2 [2019-11-19 23:07:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:48,102 INFO L82 PathProgramCache]: Analyzing trace with hash -521667071, now seen corresponding path program 3 times [2019-11-19 23:07:48,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:48,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570846749] [2019-11-19 23:07:48,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:48,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:48,118 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:48,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:48,118 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 2 times [2019-11-19 23:07:48,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:48,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909565826] [2019-11-19 23:07:48,118 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:48,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:48,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:48,122 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:48,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190016, now seen corresponding path program 4 times [2019-11-19 23:07:48,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 23:07:48,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323346834] [2019-11-19 23:07:48,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 23:07:48,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 23:07:48,139 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 23:07:48,220 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:48,220 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:48,220 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:48,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:48,220 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 23:07:48,221 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,221 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:48,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:48,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration7_Lasso [2019-11-19 23:07:48,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:48,221 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:48,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,309 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:48,309 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:48,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:07:48,321 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 23:07:48,321 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 23:07:48,327 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,336 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 23:07:48,336 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 23:07:48,449 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 23:07:48,450 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 23:07:48,450 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 23:07:48,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 23:07:48,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 23:07:48,451 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 23:07:48,451 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,451 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 23:07:48,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 23:07:48,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD3.c_Iteration7_Lasso [2019-11-19 23:07:48,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 23:07:48,451 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 23:07:48,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 23:07:48,527 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 23:07:48,527 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/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) [2019-11-19 23:07:48,537 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 [2019-11-19 23:07:48,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:48,539 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:07:48,539 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:48,539 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:48,539 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:48,540 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:07:48,540 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,543 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:07:48,549 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 [2019-11-19 23:07:48,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:48,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:07:48,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:48,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:48,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:48,551 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:07:48,551 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,553 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,559 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 [2019-11-19 23:07:48,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:48,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:48,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:48,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:48,562 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:07:48,562 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:07:48,565 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,569 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 [2019-11-19 23:07:48,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:48,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 23:07:48,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:48,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:48,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:48,572 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 23:07:48,572 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 23:07:48,573 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,578 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 [2019-11-19 23:07:48,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:48,579 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:48,579 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:48,579 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:48,582 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:07:48,582 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:07:48,588 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,594 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 [2019-11-19 23:07:48,595 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 23:07:48,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 23:07:48,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 23:07:48,596 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 23:07:48,599 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-19 23:07:48,599 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-19 23:07:48,605 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 23:07:48,619 INFO L443 ModelExtractionUtils]: Simplification made 8 calls to the SMT solver. [2019-11-19 23:07:48,619 INFO L444 ModelExtractionUtils]: 5 out of 16 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b9bc002-e71c-472f-813c-3701b4e85e6c/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 23:07:48,626 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 23:07:48,629 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 2. [2019-11-19 23:07:48,630 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 23:07:48,630 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~tmp~0, ULTIMATE.start_main_~xtmp~0) = -2*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~tmp~0 + 2*ULTIMATE.start_main_~xtmp~0 Supporting invariants [1*ULTIMATE.start_main_~tmp~0 - 1 >= 0, 1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2019-11-19 23:07:48,635 INFO L297 tatePredicateManager]: 0 out of 2 supporting invariants were superfluous and have been removed [2019-11-19 23:07:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,692 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,692 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:48,693 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-19 23:07:48,693 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-19 23:07:48,727 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 30 states and 37 transitions. Complement of second has 6 states. [2019-11-19 23:07:48,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:07:48,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:07:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-19 23:07:48,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-19 23:07:48,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:48,730 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 23:07:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,798 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:48,799 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-19 23:07:48,799 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-19 23:07:48,829 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 30 states and 37 transitions. Complement of second has 6 states. [2019-11-19 23:07:48,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:07:48,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:07:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2019-11-19 23:07:48,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-19 23:07:48,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:48,832 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-19 23:07:48,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 23:07:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 23:07:48,898 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-19 23:07:48,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 23:07:48,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 23:07:48,898 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2019-11-19 23:07:48,898 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2019-11-19 23:07:48,936 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 32 states and 39 transitions. Complement of second has 5 states. [2019-11-19 23:07:48,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-19 23:07:48,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 23:07:48,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2019-11-19 23:07:48,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 1 letters. [2019-11-19 23:07:48,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:48,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 1 letters. [2019-11-19 23:07:48,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:48,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 2 letters. [2019-11-19 23:07:48,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 23:07:48,939 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2019-11-19 23:07:48,939 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:07:48,939 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2019-11-19 23:07:48,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 23:07:48,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 23:07:48,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 23:07:48,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 23:07:48,940 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:07:48,940 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:07:48,940 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 23:07:48,940 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-19 23:07:48,940 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 23:07:48,940 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 23:07:48,940 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 23:07:48,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 11:07:48 BoogieIcfgContainer [2019-11-19 23:07:48,945 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 23:07:48,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 23:07:48,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 23:07:48,946 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 23:07:48,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 11:07:36" (3/4) ... [2019-11-19 23:07:48,949 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 23:07:48,949 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 23:07:48,950 INFO L168 Benchmark]: Toolchain (without parser) took 13177.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 951.5 MB in the beginning and 913.0 MB in the end (delta: 38.5 MB). Peak memory consumption was 236.7 MB. Max. memory is 11.5 GB. [2019-11-19 23:07:48,951 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:07:48,951 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -159.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-19 23:07:48,952 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.39 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. [2019-11-19 23:07:48,952 INFO L168 Benchmark]: Boogie Preprocessor took 28.62 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. [2019-11-19 23:07:48,952 INFO L168 Benchmark]: RCFGBuilder took 273.46 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-11-19 23:07:48,953 INFO L168 Benchmark]: BuchiAutomizer took 12579.36 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 913.0 MB in the end (delta: 175.9 MB). Peak memory consumption was 253.0 MB. Max. memory is 11.5 GB. [2019-11-19 23:07:48,953 INFO L168 Benchmark]: Witness Printer took 4.06 ms. Allocated memory is still 1.2 GB. Free memory is still 913.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 23:07:48,955 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 254.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 951.5 MB in the beginning and 1.1 GB in the end (delta: -159.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.39 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. * Boogie Preprocessor took 28.62 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 273.46 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 12579.36 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 77.1 MB). Free memory was 1.1 GB in the beginning and 913.0 MB in the end (delta: 175.9 MB). Peak memory consumption was 253.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.06 ms. Allocated memory is still 1.2 GB. Free memory is still 913.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function 2 * xtmp + 1 and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 5 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function -2 * y + tmp + 2 * xtmp and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 12.5s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 11.3s. Construction of modules took 0.2s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 56 SDtfs, 92 SDslu, 15 SDs, 0 SdLazy, 187 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf96 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq174 hnf90 smp100 dnf100 smp100 tf103 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...