./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.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_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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 e334a37fa3ef1f2b757af8cdc97575f5cde09f8b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 01:43:04,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 01:43:04,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 01:43:04,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 01:43:04,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 01:43:04,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 01:43:04,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 01:43:04,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 01:43:04,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 01:43:04,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 01:43:04,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 01:43:04,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 01:43:04,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 01:43:04,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 01:43:04,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 01:43:04,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 01:43:04,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 01:43:04,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 01:43:04,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 01:43:04,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 01:43:04,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 01:43:04,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 01:43:04,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 01:43:04,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 01:43:04,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 01:43:04,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 01:43:04,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 01:43:04,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 01:43:04,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 01:43:04,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 01:43:04,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 01:43:04,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 01:43:04,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 01:43:04,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 01:43:04,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 01:43:04,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 01:43:04,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 01:43:04,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 01:43:04,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 01:43:04,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 01:43:04,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 01:43:04,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 01:43:04,730 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 01:43:04,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 01:43:04,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 01:43:04,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 01:43:04,741 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 01:43:04,741 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 01:43:04,742 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 01:43:04,742 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 01:43:04,742 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 01:43:04,742 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 01:43:04,742 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 01:43:04,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 01:43:04,743 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 01:43:04,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 01:43:04,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 01:43:04,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 01:43:04,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 01:43:04,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 01:43:04,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 01:43:04,745 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 01:43:04,745 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 01:43:04,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 01:43:04,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 01:43:04,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 01:43:04,746 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 01:43:04,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 01:43:04,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 01:43:04,747 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 01:43:04,748 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 01:43:04,748 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_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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 -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2019-11-20 01:43:04,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 01:43:04,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 01:43:04,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 01:43:04,918 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 01:43:04,919 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 01:43:04,919 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-11-20 01:43:04,985 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/data/940bd7825/8caab817de5f47619f4dd0b6892908f2/FLAG76072f657 [2019-11-20 01:43:05,294 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 01:43:05,295 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-11-20 01:43:05,300 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/data/940bd7825/8caab817de5f47619f4dd0b6892908f2/FLAG76072f657 [2019-11-20 01:43:05,696 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/data/940bd7825/8caab817de5f47619f4dd0b6892908f2 [2019-11-20 01:43:05,698 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 01:43:05,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 01:43:05,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 01:43:05,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 01:43:05,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 01:43:05,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:43:05" (1/1) ... [2019-11-20 01:43:05,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdfe7f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:05, skipping insertion in model container [2019-11-20 01:43:05,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 01:43:05" (1/1) ... [2019-11-20 01:43:05,721 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 01:43:05,738 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 01:43:05,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:43:05,935 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 01:43:05,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 01:43:06,017 INFO L192 MainTranslator]: Completed translation [2019-11-20 01:43:06,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06 WrapperNode [2019-11-20 01:43:06,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 01:43:06,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 01:43:06,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 01:43:06,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 01:43:06,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 01:43:06,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 01:43:06,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 01:43:06,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 01:43:06,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... [2019-11-20 01:43:06,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 01:43:06,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 01:43:06,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 01:43:06,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 01:43:06,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:06,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 01:43:06,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 01:43:06,264 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 01:43:06,264 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 01:43:06,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:43:06 BoogieIcfgContainer [2019-11-20 01:43:06,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 01:43:06,266 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 01:43:06,266 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 01:43:06,269 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 01:43:06,270 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:43:06,270 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 01:43:05" (1/3) ... [2019-11-20 01:43:06,271 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72c004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:43:06, skipping insertion in model container [2019-11-20 01:43:06,271 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:43:06,271 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 01:43:06" (2/3) ... [2019-11-20 01:43:06,272 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72c004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 01:43:06, skipping insertion in model container [2019-11-20 01:43:06,272 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 01:43:06,272 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:43:06" (3/3) ... [2019-11-20 01:43:06,273 INFO L371 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2019-11-20 01:43:06,313 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 01:43:06,313 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 01:43:06,313 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 01:43:06,313 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 01:43:06,314 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 01:43:06,314 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 01:43:06,314 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 01:43:06,314 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 01:43:06,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 01:43:06,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:43:06,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:06,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:06,349 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:43:06,349 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 01:43:06,349 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 01:43:06,350 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-11-20 01:43:06,351 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:43:06,351 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:06,351 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:06,351 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-20 01:43:06,351 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 01:43:06,358 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2019-11-20 01:43:06,358 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 7#L19-2true main_~y~0 := main_~y~0 - 1; 5#L18-2true [2019-11-20 01:43:06,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-20 01:43:06,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:06,385 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321064852] [2019-11-20 01:43:06,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:06,473 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:06,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:06,474 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2019-11-20 01:43:06,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:06,474 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170081437] [2019-11-20 01:43:06,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:06,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:06,487 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:06,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:06,488 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2019-11-20 01:43:06,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:06,489 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565862258] [2019-11-20 01:43:06,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:06,502 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:06,549 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:06,550 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:06,550 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:06,550 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:06,550 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:43:06,550 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:06,550 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:06,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:06,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2019-11-20 01:43:06,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:06,551 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:06,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,707 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:06,707 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:06,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:06,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:43:06,727 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:06,728 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_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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) [2019-11-20 01:43:06,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:06,754 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 [2019-11-20 01:43:06,763 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:06,763 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_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:06,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:06,780 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:06,784 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:06,785 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:06,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:06,802 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:06,808 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:06,808 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:06,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:06,826 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:06,845 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:43:06,845 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:06,856 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:43:06,858 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:06,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:06,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:06,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:06,859 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:43:06,859 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:06,859 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:06,859 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:06,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2019-11-20 01:43:06,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:06,860 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:06,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,880 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:06,959 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:06,964 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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 [2019-11-20 01:43:06,977 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:06,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:06,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:06,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:06,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:06,985 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:43:06,985 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:43:06,990 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:06,997 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 Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:06,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:06,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:06,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:06,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:07,002 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:43:07,003 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:43:07,007 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,021 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:07,022 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:07,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:07,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:07,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:07,023 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:07,024 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:07,024 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:07,026 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,033 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 Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:07,035 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:07,035 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:07,035 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:07,035 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:07,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:07,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:07,040 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:07,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:07,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:07,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:07,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:07,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:07,067 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:07,067 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:07,070 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:43:07,074 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:43:07,074 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,085 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:43:07,085 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:43:07,085 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:43:07,086 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2019-11-20 01:43:07,090 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 01:43:07,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:07,146 INFO L255 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:07,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:07,161 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:07,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:07,185 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-11-20 01:43:07,186 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2019-11-20 01:43:07,242 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 37 states and 54 transitions. Complement of second has 8 states. [2019-11-20 01:43:07,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-20 01:43:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2019-11-20 01:43:07,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2019-11-20 01:43:07,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:07,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2019-11-20 01:43:07,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:07,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2019-11-20 01:43:07,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:07,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2019-11-20 01:43:07,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:43:07,268 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2019-11-20 01:43:07,269 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-11-20 01:43:07,269 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2019-11-20 01:43:07,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-11-20 01:43:07,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:07,270 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-20 01:43:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-11-20 01:43:07,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-20 01:43:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-20 01:43:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-11-20 01:43:07,298 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-20 01:43:07,298 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-11-20 01:43:07,298 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 01:43:07,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-11-20 01:43:07,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:43:07,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:07,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:07,301 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-11-20 01:43:07,301 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 01:43:07,302 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2019-11-20 01:43:07,302 INFO L796 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2019-11-20 01:43:07,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:07,303 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2019-11-20 01:43:07,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:07,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160249550] [2019-11-20 01:43:07,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:07,330 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:07,331 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2019-11-20 01:43:07,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:07,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378863055] [2019-11-20 01:43:07,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:07,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:07,339 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:07,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:07,340 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2019-11-20 01:43:07,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:07,340 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647165509] [2019-11-20 01:43:07,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:07,353 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:07,374 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:07,374 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:07,374 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:07,374 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:07,374 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:43:07,374 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,374 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:07,374 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:07,374 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2019-11-20 01:43:07,374 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:07,375 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:07,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:07,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:07,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:07,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:07,450 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:07,450 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:07,463 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,467 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:07,467 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_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,481 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:07,482 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,486 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:07,486 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,501 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:07,501 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,510 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:07,511 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,521 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:07,521 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:43:07,546 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,701 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:43:07,703 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:07,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:07,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:07,703 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:07,704 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:43:07,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:07,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:07,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2019-11-20 01:43:07,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:07,704 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:07,705 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:07,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:07,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:07,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:07,781 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:07,781 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,796 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:07,798 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:07,798 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:07,798 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:07,798 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:07,804 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:43:07,804 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,810 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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) [2019-11-20 01:43:07,833 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:07,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:07,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:07,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:07,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:07,843 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:43:07,843 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,849 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,862 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:07,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:07,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:07,866 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:07,866 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 01:43:07,866 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:07,867 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 01:43:07,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,872 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,890 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:07,891 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:07,892 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:07,892 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:07,892 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:07,892 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:07,898 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:07,898 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,901 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:43:07,906 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:43:07,906 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:07,915 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:43:07,916 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:43:07,916 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:43:07,916 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2019-11-20 01:43:07,927 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:07,965 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:07,966 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:07,971 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:07,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:07,972 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 01:43:07,972 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2019-11-20 01:43:07,991 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 25 states and 39 transitions. Complement of second has 6 states. [2019-11-20 01:43:07,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 01:43:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2019-11-20 01:43:07,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2019-11-20 01:43:07,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:07,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2019-11-20 01:43:07,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:07,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2019-11-20 01:43:07,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:07,996 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2019-11-20 01:43:07,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:43:07,998 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2019-11-20 01:43:07,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 01:43:07,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 01:43:07,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2019-11-20 01:43:07,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:07,999 INFO L688 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2019-11-20 01:43:07,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2019-11-20 01:43:08,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2019-11-20 01:43:08,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-20 01:43:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2019-11-20 01:43:08,004 INFO L711 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2019-11-20 01:43:08,004 INFO L591 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2019-11-20 01:43:08,004 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 01:43:08,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2019-11-20 01:43:08,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:43:08,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:08,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:08,009 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 01:43:08,009 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-20 01:43:08,010 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2019-11-20 01:43:08,010 INFO L796 eck$LassoCheckResult]: Loop: 169#L20-3 main_~x~0 := main_~x~0 - 1; 170#L19-2 main_~y~0 := main_~y~0 - 1; 164#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 165#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2019-11-20 01:43:08,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:08,010 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2019-11-20 01:43:08,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:08,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537520150] [2019-11-20 01:43:08,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:08,041 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:08,045 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2019-11-20 01:43:08,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:08,046 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757382240] [2019-11-20 01:43:08,046 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:08,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:08,056 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:08,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:08,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2019-11-20 01:43:08,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:08,058 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415291157] [2019-11-20 01:43:08,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:08,074 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:08,107 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:08,108 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:08,108 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:08,108 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:08,108 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:43:08,108 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:08,108 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:08,108 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:08,108 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2019-11-20 01:43:08,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:08,109 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:08,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,246 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:08,246 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:08,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:08,250 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:08,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:43:08,261 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:08,390 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:43:08,391 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:08,391 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:08,391 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:08,392 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:08,392 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:43:08,392 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:08,392 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:08,392 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:08,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2019-11-20 01:43:08,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:08,392 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:08,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,533 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:08,533 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:08,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:08,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:08,542 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:08,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:08,542 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 01:43:08,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:08,545 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 01:43:08,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:08,549 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:43:08,554 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:43:08,555 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:08,563 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:43:08,563 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:43:08,563 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:43:08,563 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 01:43:08,568 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:08,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:08,588 INFO L255 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:08,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:08,594 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:08,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:08,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:08,632 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 01:43:08,632 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2019-11-20 01:43:08,655 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 46 states and 68 transitions. Complement of second has 8 states. [2019-11-20 01:43:08,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 01:43:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2019-11-20 01:43:08,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2019-11-20 01:43:08,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:08,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2019-11-20 01:43:08,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:08,657 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2019-11-20 01:43:08,657 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:08,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2019-11-20 01:43:08,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:43:08,660 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2019-11-20 01:43:08,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 01:43:08,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-20 01:43:08,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2019-11-20 01:43:08,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:08,661 INFO L688 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2019-11-20 01:43:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2019-11-20 01:43:08,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-20 01:43:08,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-20 01:43:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2019-11-20 01:43:08,665 INFO L711 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2019-11-20 01:43:08,665 INFO L591 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2019-11-20 01:43:08,665 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 01:43:08,666 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2019-11-20 01:43:08,667 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 01:43:08,667 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:08,667 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:08,667 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2019-11-20 01:43:08,667 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2019-11-20 01:43:08,668 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2019-11-20 01:43:08,668 INFO L796 eck$LassoCheckResult]: Loop: 298#L20-3 main_~x~0 := main_~x~0 - 1; 290#L19-2 main_~y~0 := main_~y~0 - 1; 291#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 299#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 294#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2019-11-20 01:43:08,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:08,668 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2019-11-20 01:43:08,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:08,669 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189924669] [2019-11-20 01:43:08,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 01:43:08,714 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189924669] [2019-11-20 01:43:08,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-20 01:43:08,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-20 01:43:08,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221418894] [2019-11-20 01:43:08,733 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-20 01:43:08,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:08,734 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2019-11-20 01:43:08,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:08,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871403462] [2019-11-20 01:43:08,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:08,742 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:08,785 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:08,785 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:08,786 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:08,786 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:08,786 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:43:08,786 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:08,786 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:08,786 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:08,786 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2019-11-20 01:43:08,786 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:08,786 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:08,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:08,923 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:08,923 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:08,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:08,927 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:08,932 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:08,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=7} Honda state: {ULTIMATE.start_main_#t~nondet1=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:08,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:08,938 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:08,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:43:08,947 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:08,999 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:43:09,000 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:09,000 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:09,000 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:09,000 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:09,000 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:43:09,000 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,001 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:09,001 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:09,001 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2019-11-20 01:43:09,001 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:09,001 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:09,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,110 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:09,110 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,113 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:09,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:09,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:09,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:09,115 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2019-11-20 01:43:09,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:09,116 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2019-11-20 01:43:09,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:09,118 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,122 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:09,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:09,123 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:09,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:09,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:09,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:09,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:09,124 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:09,126 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:43:09,128 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:43:09,128 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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 [2019-11-20 01:43:09,131 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:43:09,131 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:43:09,131 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:43:09,132 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2019-11-20 01:43:09,133 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 01:43:09,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:09,178 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 01:43:09,178 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-11-20 01:43:09,201 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 80 states and 118 transitions. Complement of second has 7 states. [2019-11-20 01:43:09,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 01:43:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2019-11-20 01:43:09,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2019-11-20 01:43:09,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:09,204 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2019-11-20 01:43:09,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:09,205 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2019-11-20 01:43:09,205 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:09,205 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2019-11-20 01:43:09,208 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 01:43:09,209 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2019-11-20 01:43:09,209 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 01:43:09,210 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-20 01:43:09,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2019-11-20 01:43:09,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:09,210 INFO L688 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2019-11-20 01:43:09,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2019-11-20 01:43:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2019-11-20 01:43:09,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 01:43:09,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2019-11-20 01:43:09,214 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2019-11-20 01:43:09,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:43:09,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 01:43:09,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 01:43:09,217 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2019-11-20 01:43:09,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:09,240 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2019-11-20 01:43:09,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 01:43:09,241 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2019-11-20 01:43:09,242 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 01:43:09,242 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2019-11-20 01:43:09,242 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-11-20 01:43:09,242 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2019-11-20 01:43:09,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2019-11-20 01:43:09,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:09,243 INFO L688 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-11-20 01:43:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2019-11-20 01:43:09,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-20 01:43:09,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 01:43:09,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2019-11-20 01:43:09,245 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-11-20 01:43:09,246 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2019-11-20 01:43:09,246 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 01:43:09,246 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2019-11-20 01:43:09,247 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-11-20 01:43:09,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:09,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:09,247 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2019-11-20 01:43:09,247 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-20 01:43:09,248 INFO L794 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 538#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 539#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 559#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 546#L20-3 main_~x~0 := main_~x~0 - 1; 547#L19-2 main_~y~0 := main_~y~0 - 1; 567#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 565#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 549#L20-2 [2019-11-20 01:43:09,248 INFO L796 eck$LassoCheckResult]: Loop: 549#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 549#L20-2 [2019-11-20 01:43:09,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2019-11-20 01:43:09,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:09,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258030329] [2019-11-20 01:43:09,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,260 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:09,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,260 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2019-11-20 01:43:09,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:09,261 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496410297] [2019-11-20 01:43:09,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,265 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2019-11-20 01:43:09,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:09,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682981901] [2019-11-20 01:43:09,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,277 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:09,290 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:09,290 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:09,290 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:09,290 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:09,290 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:43:09,290 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,290 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:09,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:09,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2019-11-20 01:43:09,291 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:09,291 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:09,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,352 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:09,352 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,356 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:09,356 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/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 [2019-11-20 01:43:09,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:43:09,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:43:09,474 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:43:09,476 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:09,476 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:09,476 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:09,476 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:09,476 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:43:09,476 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,476 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:09,476 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:09,476 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2019-11-20 01:43:09,476 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:09,477 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:09,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,493 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,530 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:09,531 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,534 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:09,535 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:09,535 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:09,535 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:09,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:09,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:09,536 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:09,536 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:09,538 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:43:09,540 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:43:09,540 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,544 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:43:09,544 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:43:09,544 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:43:09,544 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2019-11-20 01:43:09,545 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 01:43:09,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,577 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,577 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:09,577 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 01:43:09,578 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-11-20 01:43:09,587 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2019-11-20 01:43:09,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:09,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 01:43:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 01:43:09,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2019-11-20 01:43:09,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:09,589 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 01:43:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,612 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:09,613 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 01:43:09,613 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-11-20 01:43:09,619 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2019-11-20 01:43:09,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 01:43:09,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2019-11-20 01:43:09,621 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2019-11-20 01:43:09,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:09,621 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 01:43:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,661 WARN L253 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:09,661 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2019-11-20 01:43:09,662 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2019-11-20 01:43:09,678 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 38 states and 54 transitions. Complement of second has 4 states. [2019-11-20 01:43:09,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:09,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-11-20 01:43:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2019-11-20 01:43:09,681 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2019-11-20 01:43:09,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:09,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2019-11-20 01:43:09,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:09,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2019-11-20 01:43:09,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:09,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2019-11-20 01:43:09,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:43:09,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2019-11-20 01:43:09,685 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 01:43:09,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 01:43:09,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2019-11-20 01:43:09,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:09,685 INFO L688 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-20 01:43:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2019-11-20 01:43:09,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-20 01:43:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-20 01:43:09,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2019-11-20 01:43:09,687 INFO L711 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-11-20 01:43:09,687 INFO L591 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2019-11-20 01:43:09,687 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 01:43:09,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2019-11-20 01:43:09,688 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:43:09,688 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:09,688 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:09,689 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2019-11-20 01:43:09,689 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 01:43:09,689 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 803#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 804#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 802#L20-3 main_~x~0 := main_~x~0 - 1; 801#L19-2 main_~y~0 := main_~y~0 - 1; 796#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 797#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2019-11-20 01:43:09,689 INFO L796 eck$LassoCheckResult]: Loop: 800#L19-2 main_~y~0 := main_~y~0 - 1; 794#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 795#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2019-11-20 01:43:09,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2019-11-20 01:43:09,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:09,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887436541] [2019-11-20 01:43:09,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,719 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:09,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,720 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2019-11-20 01:43:09,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:09,720 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734772321] [2019-11-20 01:43:09,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:09,724 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:09,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2019-11-20 01:43:09,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:09,725 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86486159] [2019-11-20 01:43:09,725 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 01:43:09,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86486159] [2019-11-20 01:43:09,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551670077] [2019-11-20 01:43:09,763 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:43:09,793 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-20 01:43:09,794 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:43:09,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 01:43:09,795 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:09,801 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-20 01:43:09,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:43:09,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-20 01:43:09,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025730686] [2019-11-20 01:43:09,817 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:09,817 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:09,818 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:09,818 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:09,818 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:43:09,818 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,818 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:09,818 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:09,818 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2019-11-20 01:43:09,818 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:09,818 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:09,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,872 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:09,873 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:09,878 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:43:09,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:09,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:09,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:43:09,893 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:09,893 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:09,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:09,906 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,910 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:09,910 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:09,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:09,916 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,929 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:43:09,929 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:43:09,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:43:09,957 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:09,957 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:09,957 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:09,957 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:09,957 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:43:09,957 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:09,958 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:09,958 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:09,958 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2019-11-20 01:43:09,958 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:09,958 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:09,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:09,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,008 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:10,008 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:10,011 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:10,012 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:10,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:10,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:10,013 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:10,015 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:43:10,015 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:43:10,018 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,024 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:10,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:10,026 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:10,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:10,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:10,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:10,027 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:10,027 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:10,028 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,032 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:10,034 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:10,034 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:10,034 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:10,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:10,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:10,035 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:10,035 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:10,037 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:43:10,039 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:43:10,039 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,043 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:43:10,043 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:43:10,043 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:43:10,043 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 01:43:10,044 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 01:43:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:10,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:10,086 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:10,092 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:10,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:10,120 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 01:43:10,120 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-11-20 01:43:10,146 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 85 transitions. Complement of second has 7 states. [2019-11-20 01:43:10,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:10,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 01:43:10,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 01:43:10,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-20 01:43:10,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:10,148 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-20 01:43:10,148 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:10,149 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2019-11-20 01:43:10,149 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:10,149 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2019-11-20 01:43:10,150 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:43:10,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2019-11-20 01:43:10,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 01:43:10,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 01:43:10,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2019-11-20 01:43:10,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:10,152 INFO L688 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2019-11-20 01:43:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2019-11-20 01:43:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2019-11-20 01:43:10,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-20 01:43:10,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2019-11-20 01:43:10,162 INFO L711 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2019-11-20 01:43:10,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:43:10,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 01:43:10,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-20 01:43:10,163 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 5 states. [2019-11-20 01:43:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:10,193 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2019-11-20 01:43:10,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 01:43:10,196 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2019-11-20 01:43:10,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:43:10,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2019-11-20 01:43:10,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 01:43:10,199 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 01:43:10,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2019-11-20 01:43:10,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:10,199 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2019-11-20 01:43:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2019-11-20 01:43:10,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2019-11-20 01:43:10,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-20 01:43:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2019-11-20 01:43:10,202 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2019-11-20 01:43:10,202 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2019-11-20 01:43:10,202 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 01:43:10,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2019-11-20 01:43:10,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:43:10,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:10,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:10,203 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2019-11-20 01:43:10,204 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 01:43:10,204 INFO L794 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1112#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1133#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1107#L20-3 main_~x~0 := main_~x~0 - 1; 1106#L19-2 main_~y~0 := main_~y~0 - 1; 1101#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1102#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1124#L19-2 main_~y~0 := main_~y~0 - 1; 1127#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1123#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1121#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1117#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1120#L20-3 main_~x~0 := main_~x~0 - 1; 1119#L19-2 main_~y~0 := main_~y~0 - 1; 1118#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1115#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2019-11-20 01:43:10,204 INFO L796 eck$LassoCheckResult]: Loop: 1105#L19-2 main_~y~0 := main_~y~0 - 1; 1099#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1100#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2019-11-20 01:43:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,210 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2019-11-20 01:43:10,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:10,211 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378616833] [2019-11-20 01:43:10,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,267 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,267 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2019-11-20 01:43:10,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:10,268 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608217638] [2019-11-20 01:43:10,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,276 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:10,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,279 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2019-11-20 01:43:10,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:10,279 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920166754] [2019-11-20 01:43:10,279 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 01:43:10,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920166754] [2019-11-20 01:43:10,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647712319] [2019-11-20 01:43:10,329 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 01:43:10,358 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 01:43:10,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 01:43:10,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 01:43:10,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 01:43:10,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 01:43:10,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-20 01:43:10,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992058263] [2019-11-20 01:43:10,393 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:10,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:10,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:10,393 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:10,393 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:43:10,394 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:10,394 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:10,394 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2019-11-20 01:43:10,394 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:10,394 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:10,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,471 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:10,472 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:10,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:10,483 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,489 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:10,489 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:10,499 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,509 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:43:10,509 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:43:10,550 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:43:10,552 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:10,552 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:10,552 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:10,552 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:10,553 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:43:10,553 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,553 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:10,553 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:10,553 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2019-11-20 01:43:10,553 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:10,553 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:10,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,612 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:10,612 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:10,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:10,618 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:10,618 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:10,618 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:10,618 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:10,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:10,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:10,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,622 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:43:10,629 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:43:10,629 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:10,634 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:43:10,634 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:43:10,634 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:43:10,634 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 01:43:10,636 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:10,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:10,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:10,666 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:10,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:10,685 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 01:43:10,685 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-11-20 01:43:10,710 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 7 states. [2019-11-20 01:43:10,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 01:43:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 01:43:10,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2019-11-20 01:43:10,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:10,712 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 01:43:10,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:10,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:10,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:10,742 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:10,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:10,764 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 01:43:10,764 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2019-11-20 01:43:10,800 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 74 states and 97 transitions. Complement of second has 9 states. [2019-11-20 01:43:10,801 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 [2019-11-20 01:43:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 01:43:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-20 01:43:10,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2019-11-20 01:43:10,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:10,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2019-11-20 01:43:10,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:10,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2019-11-20 01:43:10,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:10,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2019-11-20 01:43:10,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:43:10,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2019-11-20 01:43:10,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 01:43:10,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 01:43:10,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2019-11-20 01:43:10,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:10,806 INFO L688 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2019-11-20 01:43:10,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2019-11-20 01:43:10,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2019-11-20 01:43:10,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2019-11-20 01:43:10,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2019-11-20 01:43:10,813 INFO L711 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2019-11-20 01:43:10,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 01:43:10,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 01:43:10,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-20 01:43:10,814 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2019-11-20 01:43:10,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 01:43:10,845 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2019-11-20 01:43:10,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 01:43:10,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2019-11-20 01:43:10,848 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:43:10,849 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2019-11-20 01:43:10,850 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-11-20 01:43:10,850 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2019-11-20 01:43:10,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2019-11-20 01:43:10,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 01:43:10,850 INFO L688 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2019-11-20 01:43:10,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2019-11-20 01:43:10,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2019-11-20 01:43:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-20 01:43:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2019-11-20 01:43:10,859 INFO L711 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2019-11-20 01:43:10,859 INFO L591 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2019-11-20 01:43:10,859 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 01:43:10,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2019-11-20 01:43:10,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-20 01:43:10,860 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 01:43:10,861 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 01:43:10,861 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2019-11-20 01:43:10,861 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 01:43:10,862 INFO L794 eck$LassoCheckResult]: Stem: 1705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1719#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1716#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2019-11-20 01:43:10,862 INFO L796 eck$LassoCheckResult]: Loop: 1713#L19-2 main_~y~0 := main_~y~0 - 1; 1707#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1708#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2019-11-20 01:43:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2019-11-20 01:43:10,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:10,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725416781] [2019-11-20 01:43:10,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,880 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:10,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,880 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2019-11-20 01:43:10,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:10,881 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322544649] [2019-11-20 01:43:10,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,885 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:10,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:10,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2019-11-20 01:43:10,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 01:43:10,893 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521628809] [2019-11-20 01:43:10,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 01:43:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 01:43:10,928 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 01:43:10,963 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:10,963 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:10,964 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:10,964 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:10,964 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 01:43:10,964 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:10,964 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:10,964 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:10,964 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2019-11-20 01:43:10,964 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:10,964 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:10,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,969 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:10,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:11,037 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:11,037 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:11,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:11,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:43:11,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 01:43:11,051 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 01:43:11,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 01:43:11,061 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:11,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 01:43:11,069 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 01:43:11,095 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 01:43:11,096 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 01:43:11,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 01:43:11,097 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 01:43:11,097 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 01:43:11,097 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 01:43:11,097 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:11,097 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 01:43:11,097 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 01:43:11,097 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2019-11-20 01:43:11,097 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 01:43:11,097 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 01:43:11,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:11,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:11,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:11,109 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:11,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 01:43:11,152 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 01:43:11,152 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Exception during sending of exit command (exit): Broken pipe Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:11,181 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:11,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:11,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:11,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:11,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:11,185 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-11-20 01:43:11,185 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-11-20 01:43:11,189 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:11,194 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 01:43:11,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 01:43:11,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 01:43:11,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 01:43:11,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 01:43:11,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 01:43:11,197 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 01:43:11,197 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 01:43:11,198 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 01:43:11,201 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 01:43:11,201 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0248d0e6-e028-494d-a12e-ce8cbd257d0c/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 01:43:11,206 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 01:43:11,206 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 01:43:11,206 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 01:43:11,206 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2019-11-20 01:43:11,207 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 01:43:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:11,228 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:11,229 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:11,235 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:11,235 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:11,258 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 01:43:11,259 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-11-20 01:43:11,285 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 101 states and 134 transitions. Complement of second has 7 states. [2019-11-20 01:43:11,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 01:43:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 01:43:11,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-20 01:43:11,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:11,287 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 01:43:11,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:11,311 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:11,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:11,318 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:11,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:11,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:11,336 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 01:43:11,336 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-11-20 01:43:11,367 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 128 states and 166 transitions. Complement of second has 9 states. [2019-11-20 01:43:11,367 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 [2019-11-20 01:43:11,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 01:43:11,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2019-11-20 01:43:11,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-20 01:43:11,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:11,368 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 01:43:11,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 01:43:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:11,401 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 01:43:11,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 01:43:11,411 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 01:43:11,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 01:43:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 01:43:11,425 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2019-11-20 01:43:11,425 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2019-11-20 01:43:11,447 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 139 states and 187 transitions. Complement of second has 8 states. [2019-11-20 01:43:11,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-11-20 01:43:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 01:43:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2019-11-20 01:43:11,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-20 01:43:11,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:11,457 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2019-11-20 01:43:11,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:11,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2019-11-20 01:43:11,458 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 01:43:11,458 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2019-11-20 01:43:11,461 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:43:11,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2019-11-20 01:43:11,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 01:43:11,461 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 01:43:11,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 01:43:11,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 01:43:11,462 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:43:11,462 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:43:11,462 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 01:43:11,462 INFO L424 BuchiCegarLoop]: ======== Iteration 9============ [2019-11-20 01:43:11,462 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 01:43:11,462 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 01:43:11,462 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 01:43:11,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 01:43:11 BoogieIcfgContainer [2019-11-20 01:43:11,467 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 01:43:11,467 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 01:43:11,467 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 01:43:11,468 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 01:43:11,468 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 01:43:06" (3/4) ... [2019-11-20 01:43:11,471 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 01:43:11,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 01:43:11,473 INFO L168 Benchmark]: Toolchain (without parser) took 5773.18 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 292.0 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -288.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-11-20 01:43:11,473 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:43:11,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -207.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-20 01:43:11,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:43:11,475 INFO L168 Benchmark]: Boogie Preprocessor took 15.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:43:11,475 INFO L168 Benchmark]: RCFGBuilder took 197.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-11-20 01:43:11,475 INFO L168 Benchmark]: BuchiAutomizer took 5200.93 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 135.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -98.2 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. [2019-11-20 01:43:11,476 INFO L168 Benchmark]: Witness Printer took 3.89 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 01:43:11,477 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 319.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -207.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.27 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.37 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 197.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5200.93 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 135.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -98.2 MB). Peak memory consumption was 37.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.89 ms. Allocated memory is still 1.3 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 3.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 155 SDslu, 81 SDs, 0 SdLazy, 157 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...