./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.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_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 554582d6fc3de8e87f5dd30e5019302b6e1b96be ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 00:18:56,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:18:56,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:18:56,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:18:56,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:18:56,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:18:56,878 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:18:56,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:18:56,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:18:56,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:18:56,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:18:56,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:18:56,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:18:56,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:18:56,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:18:56,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:18:56,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:18:56,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:18:56,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:18:56,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:18:56,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:18:56,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:18:56,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:18:56,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:18:56,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:18:56,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:18:56,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:18:56,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:18:56,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:18:56,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:18:56,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:18:56,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:18:56,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:18:56,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:18:56,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:18:56,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:18:56,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:18:56,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:18:56,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:18:56,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:18:56,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:18:56,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-20 00:18:56,933 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:18:56,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:18:56,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:18:56,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:18:56,936 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:18:56,936 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-20 00:18:56,936 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-20 00:18:56,936 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-20 00:18:56,937 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-20 00:18:56,937 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-20 00:18:56,938 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-20 00:18:56,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:18:56,938 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 00:18:56,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:18:56,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:18:56,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-20 00:18:56,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-20 00:18:56,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-20 00:18:56,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:18:56,940 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-20 00:18:56,940 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:18:56,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-20 00:18:56,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:18:56,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:18:56,941 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-20 00:18:56,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:18:56,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:18:56,942 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-20 00:18:56,943 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-20 00:18:56,943 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_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 -> 554582d6fc3de8e87f5dd30e5019302b6e1b96be [2019-11-20 00:18:57,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:18:57,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:18:57,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:18:57,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:18:57,109 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:18:57,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-20 00:18:57,172 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/data/ee1a52ed4/6ed648f7645344f89d69f7d871be85de/FLAG3fc8f2c1f [2019-11-20 00:18:57,577 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:18:57,577 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-20 00:18:57,585 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/data/ee1a52ed4/6ed648f7645344f89d69f7d871be85de/FLAG3fc8f2c1f [2019-11-20 00:18:57,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/data/ee1a52ed4/6ed648f7645344f89d69f7d871be85de [2019-11-20 00:18:57,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:18:57,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:18:57,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:18:57,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:18:57,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:18:57,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b82137e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57, skipping insertion in model container [2019-11-20 00:18:57,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,619 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:18:57,635 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:18:57,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:18:57,785 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:18:57,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:18:57,873 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:18:57,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57 WrapperNode [2019-11-20 00:18:57,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:18:57,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:18:57,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:18:57,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:18:57,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:18:57,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:18:57,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:18:57,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:18:57,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... [2019-11-20 00:18:57,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:18:57,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:18:57,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:18:57,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:18:57,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:18:57,972 INFO L130 BoogieDeclarations]: Found specification of procedure p [2019-11-20 00:18:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2019-11-20 00:18:57,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:18:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:18:58,193 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:18:58,193 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 00:18:58,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:18:58 BoogieIcfgContainer [2019-11-20 00:18:58,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:18:58,195 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-20 00:18:58,195 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-20 00:18:58,198 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-20 00:18:58,199 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:18:58,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 12:18:57" (1/3) ... [2019-11-20 00:18:58,200 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33a836a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:18:58, skipping insertion in model container [2019-11-20 00:18:58,200 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:18:58,200 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:18:57" (2/3) ... [2019-11-20 00:18:58,201 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33a836a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 12:18:58, skipping insertion in model container [2019-11-20 00:18:58,208 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-20 00:18:58,208 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:18:58" (3/3) ... [2019-11-20 00:18:58,210 INFO L371 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2019-11-20 00:18:58,283 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-20 00:18:58,283 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-20 00:18:58,284 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-20 00:18:58,284 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:18:58,285 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:18:58,285 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-20 00:18:58,285 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:18:58,285 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-20 00:18:58,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-20 00:18:58,331 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:18:58,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:18:58,331 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:18:58,338 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 00:18:58,339 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 00:18:58,339 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-20 00:18:58,339 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-11-20 00:18:58,342 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:18:58,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:18:58,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:18:58,343 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-20 00:18:58,344 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 00:18:58,351 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L28true assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 10#L29true call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 11#pENTRYtrue [2019-11-20 00:18:58,351 INFO L796 eck$LassoCheckResult]: Loop: 11#pENTRYtrue ~m := #in~m;~n := #in~n;~r := #in~r; 12#L13true assume ~r > 0; 9#L14true call #t~ret0 := p(~m, ~r - 1, ~n);< 11#pENTRYtrue [2019-11-20 00:18:58,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:18:58,358 INFO L82 PathProgramCache]: Analyzing trace with hash 44796, now seen corresponding path program 1 times [2019-11-20 00:18:58,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:18:58,367 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263971859] [2019-11-20 00:18:58,367 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:18:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:18:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:18:58,481 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:18:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:18:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash 29912, now seen corresponding path program 1 times [2019-11-20 00:18:58,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:18:58,484 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570334783] [2019-11-20 00:18:58,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:18:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:18:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:18:58,495 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:18:58,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:18:58,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1334517757, now seen corresponding path program 1 times [2019-11-20 00:18:58,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:18:58,497 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329119261] [2019-11-20 00:18:58,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:18:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:18:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:18:58,519 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:18:58,654 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:18:58,655 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:18:58,655 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:18:58,655 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:18:58,655 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:18:58,655 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:18:58,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:18:58,656 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:18:58,656 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2019-11-20 00:18:58,656 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:18:58,656 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:18:58,671 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 00:18:58,676 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 00:18:58,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:18:58,688 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 00:18:58,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:18:58,700 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 00:18:58,704 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 00:18:58,720 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 00:18:58,811 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:18:58,812 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) [2019-11-20 00:18:58,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:18:58,826 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:18:58,835 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:18:58,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:18:58,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:18:58,846 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 00:18:58,854 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:18:58,854 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:18:58,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:18:58,865 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 00:18:58,872 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:18:58,873 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:18:58,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:18:58,885 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 00:18:58,890 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:18:58,890 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0} Honda state: {p_#in~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:18:58,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:18:58,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:18:58,911 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:18:58,911 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~n=0} Honda state: {p_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:18:58,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:18:58,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:18:58,929 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:18:58,929 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:18:58,937 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:18:58,937 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:18:58,969 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:18:58,969 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,226 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:19:01,236 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:01,236 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:01,237 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:01,237 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:01,237 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:19:01,237 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,237 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:01,237 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:01,237 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2019-11-20 00:19:01,237 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:01,237 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:01,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:01,248 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 00:19:01,251 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 00:19:01,256 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 00:19:01,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:01,269 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 00:19:01,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:01,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:01,351 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:01,356 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:01,361 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 00:19:01,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,364 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:01,365 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:01,365 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,373 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,384 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 00:19:01,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,386 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,386 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,386 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,386 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:01,387 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:01,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,390 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:01,396 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 00:19:01,397 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,398 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:01,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:01,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,404 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:01,413 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 00:19:01,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:01,416 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:01,416 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,423 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,437 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 00:19:01,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,439 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,439 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,439 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:01,440 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:01,440 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,442 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,447 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 00:19:01,448 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,449 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,449 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,449 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,449 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:01,450 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:01,450 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,453 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,459 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 00:19:01,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,461 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:01,463 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:01,463 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,468 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:01,485 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 00:19:01,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:01,488 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:01,488 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,490 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-20 00:19:01,492 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,504 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 00:19:01,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,507 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,507 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,507 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,507 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:01,508 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:01,508 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,512 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:01,529 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 00:19:01,531 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,532 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:01,533 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:01,534 INFO L402 nArgumentSynthesizer]: A total of 0 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 00:19:01,539 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:01,557 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 00:19:01,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,559 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,560 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:01,561 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:01,561 INFO L402 nArgumentSynthesizer]: A total of 0 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 00:19:01,568 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:01,581 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,584 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,584 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:01,585 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:01,585 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,587 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,599 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 00:19:01,601 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,601 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,601 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,601 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,602 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:01,603 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:01,603 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,605 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,610 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 00:19:01,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,612 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,612 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,612 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:01,617 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:01,617 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,620 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:01,641 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 00:19:01,643 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:01,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:01,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:01,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:01,644 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,646 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:01,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:01,650 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:19:01,665 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-11-20 00:19:01,665 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:01,670 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:19:01,670 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:19:01,671 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:19:01,671 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_#in~n + 1*p_#in~r f1 = 1*p_#in~r Supporting invariants [] [2019-11-20 00:19:01,675 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:19:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:01,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:19:01,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:01,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:19:01,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:01,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:01,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:01,758 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:01,828 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 00:19:01,843 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 00:19:01,845 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2019-11-20 00:19:02,070 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states.. Second operand 4 states. Result 47 states and 59 transitions. Complement of second has 12 states. [2019-11-20 00:19:02,072 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 00:19:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:02,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 00:19:02,077 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-20 00:19:02,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:02,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-20 00:19:02,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:02,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-20 00:19:02,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:02,081 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2019-11-20 00:19:02,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:19:02,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 20 states and 23 transitions. [2019-11-20 00:19:02,101 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-11-20 00:19:02,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-11-20 00:19:02,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2019-11-20 00:19:02,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:19:02,105 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-20 00:19:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2019-11-20 00:19:02,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2019-11-20 00:19:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-20 00:19:02,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-20 00:19:02,133 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-20 00:19:02,133 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-20 00:19:02,133 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-20 00:19:02,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2019-11-20 00:19:02,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:19:02,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:19:02,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:19:02,135 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-11-20 00:19:02,135 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 00:19:02,136 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 123#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 129#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 131#L13 assume !(~r > 0); 125#L16 [2019-11-20 00:19:02,136 INFO L796 eck$LassoCheckResult]: Loop: 125#L16 assume ~n > 0; 120#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 122#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 132#L13 assume !(~r > 0); 125#L16 [2019-11-20 00:19:02,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:02,136 INFO L82 PathProgramCache]: Analyzing trace with hash 43048962, now seen corresponding path program 1 times [2019-11-20 00:19:02,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:02,137 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041344044] [2019-11-20 00:19:02,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:02,172 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:02,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:02,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1220476, now seen corresponding path program 1 times [2019-11-20 00:19:02,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:02,174 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712760638] [2019-11-20 00:19:02,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:02,189 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:02,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526915, now seen corresponding path program 1 times [2019-11-20 00:19:02,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:02,191 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107066895] [2019-11-20 00:19:02,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:02,218 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:02,309 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:02,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:02,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:02,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:02,310 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:19:02,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:02,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:02,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:02,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2019-11-20 00:19:02,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:02,310 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:02,312 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 00:19:02,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:02,317 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 00:19:02,320 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 00:19:02,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:02,417 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:02,417 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:02,422 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:02,422 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:02,426 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:02,426 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:02,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:02,432 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:02,436 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:02,436 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:02,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:02,442 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 00:19:02,446 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:02,446 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:02,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:02,452 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_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:02,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:19:02,465 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 00:19:03,081 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:19:03,083 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:03,083 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:03,083 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:03,083 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:03,084 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:19:03,084 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:03,084 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:03,084 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:03,084 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2019-11-20 00:19:03,084 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:03,084 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:03,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:03,089 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 00:19:03,091 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 00:19:03,104 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 00:19:03,108 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 00:19:03,208 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:03,208 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:03,231 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 [MP z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Exception during sending of exit command (exit): Broken pipe [2019-11-20 00:19:03,242 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:03,243 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:03,243 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:03,243 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:03,243 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:03,244 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:03,244 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:03,245 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:03,253 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 00:19:03,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:03,257 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:03,257 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:03,257 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:03,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:03,258 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:03,258 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:03,260 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:03,273 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 00:19:03,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:03,276 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:03,276 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:03,276 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:03,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:03,278 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:03,278 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:03,285 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:19:03,289 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:19:03,289 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:03,292 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:19:03,292 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:19:03,292 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:19:03,292 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2019-11-20 00:19:03,294 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:19:03,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:03,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:03,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:19:03,319 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:03,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:19:03,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:03,372 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 00:19:03,372 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2019-11-20 00:19:03,372 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-11-20 00:19:03,388 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand 5 states. Result 25 states and 30 transitions. Complement of second has 13 states. [2019-11-20 00:19:03,389 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 00:19:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-11-20 00:19:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-11-20 00:19:03,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2019-11-20 00:19:03,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:03,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2019-11-20 00:19:03,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:03,391 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2019-11-20 00:19:03,391 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:03,391 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2019-11-20 00:19:03,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:19:03,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 24 transitions. [2019-11-20 00:19:03,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-11-20 00:19:03,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-11-20 00:19:03,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2019-11-20 00:19:03,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:19:03,394 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-20 00:19:03,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2019-11-20 00:19:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-20 00:19:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-20 00:19:03,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-11-20 00:19:03,396 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-20 00:19:03,396 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-11-20 00:19:03,396 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-20 00:19:03,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2019-11-20 00:19:03,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:19:03,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:19:03,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:19:03,398 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:19:03,398 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 00:19:03,398 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 222#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 230#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 232#L13 assume !(~r > 0); 225#L16 assume ~n > 0; 221#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 224#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 234#L13 assume ~r > 0; 219#L14 [2019-11-20 00:19:03,398 INFO L796 eck$LassoCheckResult]: Loop: 219#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 220#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 235#L13 assume ~r > 0; 219#L14 [2019-11-20 00:19:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:03,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 1 times [2019-11-20 00:19:03,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:03,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287658957] [2019-11-20 00:19:03,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:03,413 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:03,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:03,414 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 2 times [2019-11-20 00:19:03,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:03,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837790201] [2019-11-20 00:19:03,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:03,421 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:03,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:03,421 INFO L82 PathProgramCache]: Analyzing trace with hash -507463707, now seen corresponding path program 1 times [2019-11-20 00:19:03,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:03,422 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220319760] [2019-11-20 00:19:03,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:03,441 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:03,532 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:03,532 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:03,532 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:03,532 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:03,533 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:19:03,533 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:03,533 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:03,533 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:03,533 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2019-11-20 00:19:03,533 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:03,533 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:03,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:03,544 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 00:19:03,553 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 00:19:03,556 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 00:19:03,558 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 00:19:03,630 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:03,630 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:03,637 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:03,637 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:03,645 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:03,645 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=-6, p_~m=-6} Honda state: {p_#in~m=-6, p_~m=-6} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) [2019-11-20 00:19:03,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:03,655 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:03,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:19:03,682 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:15,704 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-20 00:19:15,706 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:15,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:15,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:15,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:15,706 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:19:15,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:15,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:15,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:15,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2019-11-20 00:19:15,707 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:15,707 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:15,708 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 00:19:15,712 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 00:19:15,720 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 00:19:15,722 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 00:19:15,724 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 00:19:15,786 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:15,786 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:15,799 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 00:19:15,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:15,801 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:15,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:15,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:15,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:15,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:15,802 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:15,804 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:15,808 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 00:19:15,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:15,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:15,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:15,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:15,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:15,812 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:15,812 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:15,815 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) [2019-11-20 00:19:15,828 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 00:19:15,829 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:15,829 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:15,830 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:15,830 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:15,830 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:15,830 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:15,830 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:15,832 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:15,849 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 00:19:15,851 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:15,851 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:15,851 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:15,851 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:15,851 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:15,852 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:15,852 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:15,854 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:15,859 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 00:19:15,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:15,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:15,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:15,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:15,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:15,863 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:15,863 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:15,864 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-20 00:19:15,865 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:15,870 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 00:19:15,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:15,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:15,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:15,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:15,871 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:15,875 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:15,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:15,876 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:15,881 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 00:19:15,882 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:15,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:15,883 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:15,883 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:15,883 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:15,885 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:15,886 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:15,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:19:15,903 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-11-20 00:19:15,903 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:15,907 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:19:15,908 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:19:15,908 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:19:15,908 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~r + 1*p_~n f1 = 1*p_~n Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:15,910 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:19:15,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:15,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:19:15,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:15,981 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:19:15,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:15,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:15,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:15,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:16,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:16,036 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 00:19:16,036 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 00:19:16,037 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-20 00:19:16,123 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 42 states and 50 transitions. Complement of second has 9 states. [2019-11-20 00:19:16,124 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 00:19:16,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-20 00:19:16,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-20 00:19:16,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:16,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 00:19:16,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:16,125 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-20 00:19:16,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:16,126 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2019-11-20 00:19:16,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:19:16,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 44 transitions. [2019-11-20 00:19:16,129 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-11-20 00:19:16,129 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-11-20 00:19:16,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2019-11-20 00:19:16,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:19:16,129 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-11-20 00:19:16,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2019-11-20 00:19:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-11-20 00:19:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-20 00:19:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-11-20 00:19:16,133 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-20 00:19:16,133 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-11-20 00:19:16,133 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-20 00:19:16,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2019-11-20 00:19:16,134 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-11-20 00:19:16,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:19:16,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:19:16,134 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:19:16,135 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-20 00:19:16,135 INFO L794 eck$LassoCheckResult]: Stem: 355#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 356#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 357#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 360#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 361#L13 assume ~r > 0; 351#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 358#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 375#L13 assume !(~r > 0); 353#L16 assume ~n > 0; 350#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 352#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 365#L13 assume ~r > 0; 349#L14 [2019-11-20 00:19:16,135 INFO L796 eck$LassoCheckResult]: Loop: 349#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 348#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 373#L13 assume ~r > 0; 349#L14 [2019-11-20 00:19:16,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:16,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1683587899, now seen corresponding path program 2 times [2019-11-20 00:19:16,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:16,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082051704] [2019-11-20 00:19:16,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:16,155 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:16,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:16,155 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 3 times [2019-11-20 00:19:16,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:16,156 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97026670] [2019-11-20 00:19:16,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:16,162 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash -860956668, now seen corresponding path program 3 times [2019-11-20 00:19:16,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:16,163 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946240331] [2019-11-20 00:19:16,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:16,185 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:16,282 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:16,282 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:16,282 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:16,282 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:16,283 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:19:16,283 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:16,283 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:16,283 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:16,283 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2019-11-20 00:19:16,283 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:16,283 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:16,284 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 00:19:16,292 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 00:19:16,294 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 00:19:16,296 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 00:19:16,301 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 00:19:16,355 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:16,355 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) [2019-11-20 00:19:16,369 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:16,369 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:16,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:19:16,381 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:28,394 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-11-20 00:19:28,396 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:28,396 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:28,396 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:28,396 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:28,396 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:19:28,396 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:28,396 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:28,396 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:28,397 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2019-11-20 00:19:28,397 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:28,397 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:28,398 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 00:19:28,408 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 00:19:28,410 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 00:19:28,412 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 00:19:28,416 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 00:19:28,472 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:28,473 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:28,476 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 00:19:28,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:28,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:28,477 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:28,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:28,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:28,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:28,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:28,481 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:28,485 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 00:19:28,487 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:28,487 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:28,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:28,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:28,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:28,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:28,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:28,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:28,492 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 00:19:28,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:28,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:28,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:28,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:28,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:28,494 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:28,494 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:28,495 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:28,500 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 00:19:28,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:28,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:28,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:28,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:28,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:28,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:28,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:28,503 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:28,507 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 00:19:28,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:28,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:28,509 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:28,509 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:28,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:28,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:28,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:28,510 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-20 00:19:28,511 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:28,514 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 00:19:28,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:28,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:28,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:28,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:28,516 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-11-20 00:19:28,519 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-11-20 00:19:28,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:28,524 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:19:28,539 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-11-20 00:19:28,539 INFO L444 ModelExtractionUtils]: 5 out of 11 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) [2019-11-20 00:19:28,543 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:19:28,543 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:19:28,544 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:19:28,544 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*p_~n + 1*p_~r f1 = 1*p_~n Supporting invariants [] [2019-11-20 00:19:28,545 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:28,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:28,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:19:28,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:28,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:19:28,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:28,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:28,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:28,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:28,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:28,720 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 00:19:28,721 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 00:19:28,721 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-20 00:19:28,813 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2019-11-20 00:19:28,814 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 00:19:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-20 00:19:28,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 00:19:28,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:28,815 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:19:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:28,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:19:28,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:28,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:19:28,862 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:28,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:28,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:28,866 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:28,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:28,908 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 00:19:28,909 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 00:19:28,909 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-20 00:19:28,982 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 48 states and 60 transitions. Complement of second has 9 states. [2019-11-20 00:19:28,984 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 00:19:28,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:28,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-11-20 00:19:28,984 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 00:19:28,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:28,984 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:19:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:29,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:19:29,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:29,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:29,046 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 00:19:29,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:29,048 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:29,049 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:29,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:29,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 00:19:29,116 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 00:19:29,117 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 00:19:29,117 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-11-20 00:19:29,231 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 53 states and 68 transitions. Complement of second has 8 states. [2019-11-20 00:19:29,233 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 00:19:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:29,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 00:19:29,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-20 00:19:29,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:29,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-20 00:19:29,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:29,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-20 00:19:29,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:29,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2019-11-20 00:19:29,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-11-20 00:19:29,237 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 51 transitions. [2019-11-20 00:19:29,238 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-11-20 00:19:29,238 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-11-20 00:19:29,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2019-11-20 00:19:29,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:19:29,238 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-11-20 00:19:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2019-11-20 00:19:29,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2019-11-20 00:19:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 00:19:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-11-20 00:19:29,241 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-20 00:19:29,241 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-11-20 00:19:29,241 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-20 00:19:29,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2019-11-20 00:19:29,242 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-11-20 00:19:29,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:19:29,242 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:19:29,243 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:19:29,243 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2019-11-20 00:19:29,243 INFO L794 eck$LassoCheckResult]: Stem: 724#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 725#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 723#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 732#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 733#L13 assume !(~r > 0); 726#L16 assume ~n > 0; 720#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 721#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 734#L13 assume ~r > 0; 718#L14 [2019-11-20 00:19:29,243 INFO L796 eck$LassoCheckResult]: Loop: 718#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 729#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 730#L13 assume !(~r > 0); 735#L16 assume ~n > 0; 716#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 719#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 736#L13 assume ~r > 0; 718#L14 [2019-11-20 00:19:29,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:29,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 2 times [2019-11-20 00:19:29,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:29,244 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541972661] [2019-11-20 00:19:29,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:29,256 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:29,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:29,256 INFO L82 PathProgramCache]: Analyzing trace with hash 828947705, now seen corresponding path program 1 times [2019-11-20 00:19:29,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:29,257 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347056315] [2019-11-20 00:19:29,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:29,265 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:29,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:29,266 INFO L82 PathProgramCache]: Analyzing trace with hash 559352800, now seen corresponding path program 4 times [2019-11-20 00:19:29,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:29,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37667127] [2019-11-20 00:19:29,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:29,333 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 00:19:29,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37667127] [2019-11-20 00:19:29,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945598340] [2019-11-20 00:19:29,335 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-20 00:19:29,374 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-20 00:19:29,374 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 00:19:29,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:19:29,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-20 00:19:29,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 00:19:29,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-11-20 00:19:29,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40398814] [2019-11-20 00:19:29,566 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:29,566 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:29,566 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:29,566 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:29,566 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:19:29,566 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:29,566 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:29,566 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:29,566 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2019-11-20 00:19:29,566 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:29,567 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:29,567 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 00:19:29,569 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 00:19:29,571 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 00:19:29,573 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 00:19:29,692 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:29,692 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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) [2019-11-20 00:19:29,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:29,696 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:29,701 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:29,701 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:29,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:29,706 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:29,709 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:29,709 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret1=0} Honda state: {p_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:29,712 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:29,712 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:29,715 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:29,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#t~ret0=0} Honda state: {p_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/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 00:19:29,719 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:29,719 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:29,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:19:29,742 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,106 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:19:35,108 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:35,108 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:35,108 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:35,108 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:35,108 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:19:35,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:35,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:35,109 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2019-11-20 00:19:35,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:35,109 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:35,110 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 00:19:35,112 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 00:19:35,113 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 00:19:35,115 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 00:19:35,222 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:35,222 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:35,226 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 00:19:35,227 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:35,227 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:35,228 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:35,228 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:35,228 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:35,228 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:35,228 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,230 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,236 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 00:19:35,238 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:35,238 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:35,238 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:35,238 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:35,238 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:35,239 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:35,239 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:35,240 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:35,248 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 00:19:35,249 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:35,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:35,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:35,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:35,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:35,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:35,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,252 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:35,259 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:19:35,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:35,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:35,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:35,262 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:35,262 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:35,265 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:35,265 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,270 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:19:35,274 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:19:35,274 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:35,281 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:19:35,281 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:19:35,281 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:19:35,281 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~m) = 1*p_~m Supporting invariants [] [2019-11-20 00:19:35,284 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:35,314 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 00:19:35,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:35,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 00:19:35,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:19:35,400 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2019-11-20 00:19:35,400 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9 Second operand 7 states. [2019-11-20 00:19:35,489 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9. Second operand 7 states. Result 104 states and 131 transitions. Complement of second has 26 states. [2019-11-20 00:19:35,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2019-11-20 00:19:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-20 00:19:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2019-11-20 00:19:35,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 7 letters. [2019-11-20 00:19:35,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:35,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 16 letters. Loop has 7 letters. [2019-11-20 00:19:35,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:35,490 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 14 letters. [2019-11-20 00:19:35,490 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:35,490 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 131 transitions. [2019-11-20 00:19:35,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-11-20 00:19:35,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 104 states and 131 transitions. [2019-11-20 00:19:35,496 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-11-20 00:19:35,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-20 00:19:35,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 131 transitions. [2019-11-20 00:19:35,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:19:35,496 INFO L688 BuchiCegarLoop]: Abstraction has 104 states and 131 transitions. [2019-11-20 00:19:35,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 131 transitions. [2019-11-20 00:19:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2019-11-20 00:19:35,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-11-20 00:19:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2019-11-20 00:19:35,502 INFO L711 BuchiCegarLoop]: Abstraction has 59 states and 79 transitions. [2019-11-20 00:19:35,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-20 00:19:35,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 00:19:35,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 00:19:35,506 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand 6 states. [2019-11-20 00:19:35,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:19:35,556 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2019-11-20 00:19:35,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 00:19:35,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 95 transitions. [2019-11-20 00:19:35,558 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-11-20 00:19:35,559 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 37 states and 43 transitions. [2019-11-20 00:19:35,559 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-11-20 00:19:35,559 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-11-20 00:19:35,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 43 transitions. [2019-11-20 00:19:35,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:19:35,560 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 43 transitions. [2019-11-20 00:19:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 43 transitions. [2019-11-20 00:19:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2019-11-20 00:19:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 00:19:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-20 00:19:35,562 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-20 00:19:35,562 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-20 00:19:35,562 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-20 00:19:35,562 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2019-11-20 00:19:35,562 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:19:35,563 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:19:35,563 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:19:35,563 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 00:19:35,563 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 00:19:35,563 INFO L794 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1151#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1152#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1157#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1163#L13 assume !(~r > 0); 1162#L16 assume ~n > 0; 1153#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1161#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1160#L13 assume ~r > 0; 1144#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1142#pENTRY [2019-11-20 00:19:35,563 INFO L796 eck$LassoCheckResult]: Loop: 1142#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1154#L13 assume !(~r > 0); 1148#L16 assume ~n > 0; 1141#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1142#pENTRY [2019-11-20 00:19:35,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:35,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1492207714, now seen corresponding path program 5 times [2019-11-20 00:19:35,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:35,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335156099] [2019-11-20 00:19:35,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:35,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:35,581 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:35,582 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 2 times [2019-11-20 00:19:35,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:35,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830987805] [2019-11-20 00:19:35,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:35,589 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:35,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1953652509, now seen corresponding path program 6 times [2019-11-20 00:19:35,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:35,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801723960] [2019-11-20 00:19:35,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:35,609 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:35,667 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:35,668 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:35,668 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:35,668 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:35,668 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:19:35,668 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,668 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:35,668 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:35,668 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2019-11-20 00:19:35,668 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:35,669 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:35,669 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 00:19:35,671 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 00:19:35,673 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 00:19:35,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:35,680 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 00:19:35,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:35,684 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 00:19:35,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:35,727 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:35,727 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 66 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 66 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:35,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:35,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:35,735 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 67 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 67 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:35,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:35,742 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:35,742 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 68 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 68 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,746 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:35,746 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 69 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 69 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:19:35,752 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:35,757 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:19:35,758 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:35,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:35,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:35,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:35,759 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:19:35,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:35,759 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:35,759 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2019-11-20 00:19:35,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:35,759 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:35,760 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 00:19:35,765 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 00:19:35,770 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 00:19:35,771 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 00:19:35,775 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 00:19:35,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:35,785 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 00:19:35,788 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 00:19:35,850 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:35,850 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:35,860 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 00:19:35,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:35,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:35,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:35,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:35,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:35,864 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:35,864 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,865 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:35,873 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 00:19:35,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:35,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:35,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:35,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:35,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:35,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:35,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,877 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:35,886 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 00:19:35,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:35,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:35,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:35,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:35,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:35,889 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:35,889 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,890 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 73 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 73 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,894 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 00:19:35,895 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:35,895 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:35,895 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:35,895 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:35,895 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:35,896 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:35,896 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:35,898 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:19:35,900 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:19:35,900 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_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-20 00:19:35,903 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:19:35,903 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:19:35,903 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:19:35,903 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:35,904 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:19:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:35,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-20 00:19:35,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:35,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:19:35,946 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:35,962 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 00:19:35,962 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 00:19:35,962 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-11-20 00:19:36,016 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7. Second operand 4 states. Result 62 states and 70 transitions. Complement of second has 13 states. [2019-11-20 00:19:36,017 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 00:19:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:36,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 00:19:36,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2019-11-20 00:19:36,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:36,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 4 letters. [2019-11-20 00:19:36,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:36,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2019-11-20 00:19:36,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:36,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 70 transitions. [2019-11-20 00:19:36,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:19:36,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 39 states and 46 transitions. [2019-11-20 00:19:36,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-11-20 00:19:36,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-11-20 00:19:36,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2019-11-20 00:19:36,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-20 00:19:36,023 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-11-20 00:19:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2019-11-20 00:19:36,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2019-11-20 00:19:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-20 00:19:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-20 00:19:36,025 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-20 00:19:36,025 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-20 00:19:36,025 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-20 00:19:36,025 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2019-11-20 00:19:36,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-20 00:19:36,026 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-20 00:19:36,026 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-20 00:19:36,027 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-20 00:19:36,027 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-11-20 00:19:36,027 INFO L794 eck$LassoCheckResult]: Stem: 1308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1309#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1312#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1319#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1320#L13 assume !(~r > 0); 1321#L16 assume ~n > 0; 1314#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1323#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1322#L13 assume ~r > 0; 1313#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1307#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1318#L13 assume ~r > 0; 1303#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1304#pENTRY [2019-11-20 00:19:36,027 INFO L796 eck$LassoCheckResult]: Loop: 1304#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1324#L13 assume !(~r > 0); 1310#L16 assume ~n > 0; 1302#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1304#pENTRY [2019-11-20 00:19:36,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:36,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1448494295, now seen corresponding path program 7 times [2019-11-20 00:19:36,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:36,028 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424912624] [2019-11-20 00:19:36,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:36,062 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:36,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:36,063 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 3 times [2019-11-20 00:19:36,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:36,063 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417833309] [2019-11-20 00:19:36,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:36,068 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:36,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:36,069 INFO L82 PathProgramCache]: Analyzing trace with hash 90839314, now seen corresponding path program 8 times [2019-11-20 00:19:36,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:19:36,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540895379] [2019-11-20 00:19:36,069 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:19:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:19:36,084 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:19:36,131 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:36,131 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:36,132 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:36,132 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:36,132 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-20 00:19:36,132 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,132 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:36,132 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:36,132 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2019-11-20 00:19:36,132 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:36,132 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:36,133 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 00:19:36,144 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 00:19:36,155 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 00:19:36,157 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 00:19:36,159 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 00:19:36,164 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 00:19:36,166 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 00:19:36,168 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 00:19:36,216 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:36,216 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 75 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 75 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,219 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:36,219 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:36,222 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:36,222 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#res=0} Honda state: {p_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 76 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 76 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:36,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:36,229 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:36,229 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_#in~m=0, p_#in~r=0} Honda state: {p_#in~m=0, p_#in~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 77 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 77 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:36,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:36,235 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:36,235 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~m=0} Honda state: {p_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 78 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 78 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:36,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:36,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-20 00:19:36,241 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {p_~r=0} Honda state: {p_~r=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 79 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 79 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,245 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-20 00:19:36,245 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 80 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 80 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-20 00:19:36,251 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-20 00:19:36,297 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-20 00:19:36,298 INFO L210 LassoAnalysis]: Preferences: [2019-11-20 00:19:36,299 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-20 00:19:36,299 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-20 00:19:36,299 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-20 00:19:36,299 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-20 00:19:36,299 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,299 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-20 00:19:36,299 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-20 00:19:36,299 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2019-11-20 00:19:36,299 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-20 00:19:36,299 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-20 00:19:36,300 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 00:19:36,301 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 00:19:36,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:36,308 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 00:19:36,312 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 00:19:36,314 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 00:19:36,315 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-20 00:19:36,317 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 00:19:36,354 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-20 00:19:36,354 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 81 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 81 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,358 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 00:19:36,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:36,359 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:36,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:36,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:36,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:36,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:36,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:36,361 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 82 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 82 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,364 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 00:19:36,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:36,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:36,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:36,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:36,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:36,367 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:36,367 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:36,369 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 83 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 83 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-11-20 00:19:36,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:36,380 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:36,381 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:36,381 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:36,381 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:36,381 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:36,381 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:36,383 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 84 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 84 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,390 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 00:19:36,391 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-20 00:19:36,391 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-20 00:19:36,391 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-20 00:19:36,391 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-20 00:19:36,391 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-20 00:19:36,392 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-20 00:19:36,392 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-20 00:19:36,394 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-20 00:19:36,396 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-20 00:19:36,396 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_b0c69972-d8ee-452f-99dc-a44bc8788c18/bin/uautomizer/z3 Starting monitored process 85 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 85 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-20 00:19:36,399 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-20 00:19:36,399 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-20 00:19:36,399 INFO L510 LassoAnalysis]: Proved termination. [2019-11-20 00:19:36,399 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2019-11-20 00:19:36,401 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-20 00:19:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:36,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:19:36,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:36,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:19:36,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:36,474 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 00:19:36,475 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 00:19:36,475 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-20 00:19:36,519 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2019-11-20 00:19:36,519 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 00:19:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 00:19:36,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-20 00:19:36,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:36,520 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:19:36,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:36,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:19:36,551 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:36,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:19:36,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:36,572 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 00:19:36,572 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 00:19:36,572 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-20 00:19:36,599 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 55 transitions. Complement of second has 11 states. [2019-11-20 00:19:36,599 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 00:19:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:36,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-11-20 00:19:36,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-20 00:19:36,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:36,600 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-11-20 00:19:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:19:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:36,631 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 00:19:36,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:19:36,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 00:19:36,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:19:36,657 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 00:19:36,657 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 00:19:36,657 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-11-20 00:19:36,689 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 48 states and 53 transitions. Complement of second has 12 states. [2019-11-20 00:19:36,692 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 00:19:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-20 00:19:36,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-11-20 00:19:36,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2019-11-20 00:19:36,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:36,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 17 letters. Loop has 4 letters. [2019-11-20 00:19:36,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:36,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 8 letters. [2019-11-20 00:19:36,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-20 00:19:36,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 53 transitions. [2019-11-20 00:19:36,695 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:19:36,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2019-11-20 00:19:36,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-20 00:19:36,695 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-20 00:19:36,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-20 00:19:36,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-20 00:19:36,695 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:19:36,695 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:19:36,695 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:19:36,696 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-20 00:19:36,696 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:19:36,696 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-20 00:19:36,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-20 00:19:36,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 12:19:36 BoogieIcfgContainer [2019-11-20 00:19:36,703 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-20 00:19:36,703 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:19:36,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:19:36,704 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:19:36,704 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:18:58" (3/4) ... [2019-11-20 00:19:36,714 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 00:19:36,714 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:19:36,716 INFO L168 Benchmark]: Toolchain (without parser) took 39110.72 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 291.0 MB). Free memory was 947.4 MB in the beginning and 928.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 309.9 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:36,716 INFO L168 Benchmark]: CDTParser took 0.26 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 00:19:36,717 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:36,717 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:19:36,717 INFO L168 Benchmark]: Boogie Preprocessor took 14.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:19:36,718 INFO L168 Benchmark]: RCFGBuilder took 276.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:36,718 INFO L168 Benchmark]: BuchiAutomizer took 38507.71 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 169.3 MB). Free memory was 1.1 GB in the beginning and 928.5 MB in the end (delta: 166.4 MB). Peak memory consumption was 335.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:19:36,718 INFO L168 Benchmark]: Witness Printer took 10.96 ms. Allocated memory is still 1.3 GB. Free memory is still 928.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:19:36,720 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 267.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.50 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 276.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 38507.71 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 169.3 MB). Free memory was 1.1 GB in the beginning and 928.5 MB in the end (delta: 166.4 MB). Peak memory consumption was 335.7 MB. Max. memory is 11.5 GB. * Witness Printer took 10.96 ms. Allocated memory is still 1.3 GB. Free memory is still 928.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (1 trivial, 5 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if \old(n) + \old(r) > 0 then 1 else 0), (if \old(n) + \old(r) > 0 then \old(n) + \old(r) else \old(r)) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 5 locations. One deterministic module has 2-nested ranking function (if r + n > 0 then 1 else 0), (if r + n > 0 then r + n else n) and consists of 4 locations. One deterministic module has affine ranking function m and consists of 7 locations. One deterministic module has affine ranking function \old(n) and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if n + r > 0 then 1 else 0), (if n + r > 0 then n + r else n) and consists of 4 locations. One nondeterministic module has affine ranking function \old(n) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 38.4s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 36.1s. Construction of modules took 0.2s. Büchi inclusion checks took 1.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 104 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 31 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 146 SDtfs, 159 SDslu, 59 SDs, 0 SdLazy, 192 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT6 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf99 lsp73 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq180 hnf89 smp100 dnf100 smp100 tf107 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 32.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...