./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 0.1.25-f470102 [2019-12-07 17:49:38,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:49:38,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:49:38,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:49:38,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:49:38,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:49:38,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:49:38,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:49:38,767 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:49:38,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:49:38,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:49:38,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:49:38,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:49:38,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:49:38,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:49:38,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:49:38,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:49:38,774 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:49:38,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:49:38,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:49:38,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:49:38,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:49:38,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:49:38,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:49:38,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:49:38,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:49:38,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:49:38,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:49:38,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:49:38,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:49:38,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:49:38,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:49:38,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:49:38,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:49:38,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:49:38,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:49:38,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:49:38,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:49:38,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:49:38,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:49:38,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:49:38,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 17:49:38,804 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:49:38,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:49:38,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:49:38,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:49:38,805 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:49:38,806 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 17:49:38,806 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 17:49:38,806 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 17:49:38,806 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 17:49:38,806 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 17:49:38,806 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 17:49:38,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:49:38,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:49:38,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:49:38,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:49:38,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 17:49:38,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 17:49:38,807 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 17:49:38,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 17:49:38,808 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 17:49:38,808 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:49:38,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 17:49:38,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:49:38,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:49:38,808 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 17:49:38,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:49:38,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:49:38,809 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:49:38,809 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 17:49:38,809 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 17:49:38,809 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:38,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:49:38,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:49:38,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:49:38,928 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:49:38,929 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:49:38,929 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-12-07 17:49:38,968 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/data/1ede23558/004e64aac9fa4ad19277bcdd594367d5/FLAG9d155cdf4 [2019-12-07 17:49:39,380 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:49:39,380 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/sv-benchmarks/c/termination-crafted-lit/LeeJonesBen-Amram-POPL2001-Ex4.c [2019-12-07 17:49:39,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/data/1ede23558/004e64aac9fa4ad19277bcdd594367d5/FLAG9d155cdf4 [2019-12-07 17:49:39,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/data/1ede23558/004e64aac9fa4ad19277bcdd594367d5 [2019-12-07 17:49:39,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:49:39,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 17:49:39,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:49:39,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:49:39,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:49:39,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f146fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39, skipping insertion in model container [2019-12-07 17:49:39,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:49:39,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:49:39,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:49:39,514 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:49:39,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:49:39,564 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:49:39,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39 WrapperNode [2019-12-07 17:49:39,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:49:39,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 17:49:39,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 17:49:39,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 17:49:39,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,574 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 17:49:39,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:49:39,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:49:39,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:49:39,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... [2019-12-07 17:49:39,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:49:39,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:49:39,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:49:39,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:49:39,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:39,636 INFO L130 BoogieDeclarations]: Found specification of procedure p [2019-12-07 17:49:39,636 INFO L138 BoogieDeclarations]: Found implementation of procedure p [2019-12-07 17:49:39,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:49:39,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:49:39,728 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:49:39,728 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 17:49:39,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:49:39 BoogieIcfgContainer [2019-12-07 17:49:39,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:49:39,730 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 17:49:39,730 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 17:49:39,732 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 17:49:39,732 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:49:39,733 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 05:49:39" (1/3) ... [2019-12-07 17:49:39,733 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39432824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:49:39, skipping insertion in model container [2019-12-07 17:49:39,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:49:39,733 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:49:39" (2/3) ... [2019-12-07 17:49:39,734 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@39432824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 05:49:39, skipping insertion in model container [2019-12-07 17:49:39,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 17:49:39,734 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:49:39" (3/3) ... [2019-12-07 17:49:39,735 INFO L371 chiAutomizerObserver]: Analyzing ICFG LeeJonesBen-Amram-POPL2001-Ex4.c [2019-12-07 17:49:39,763 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 17:49:39,764 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 17:49:39,764 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 17:49:39,764 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:49:39,764 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:49:39,764 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 17:49:39,764 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:49:39,764 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 17:49:39,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-12-07 17:49:39,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:49:39,789 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:49:39,789 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:49:39,793 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 17:49:39,794 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:49:39,794 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 17:49:39,794 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states. [2019-12-07 17:49:39,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:49:39,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:49:39,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:49:39,796 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-12-07 17:49:39,796 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:49:39,801 INFO L794 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 7#L28true assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 10#L29true call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 11#pENTRYtrue [2019-12-07 17:49:39,801 INFO L796 eck$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 [2019-12-07 17:49:39,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:39,805 INFO L82 PathProgramCache]: Analyzing trace with hash 44796, now seen corresponding path program 1 times [2019-12-07 17:49:39,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:39,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144508876] [2019-12-07 17:49:39,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:39,883 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:39,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:39,884 INFO L82 PathProgramCache]: Analyzing trace with hash 29912, now seen corresponding path program 1 times [2019-12-07 17:49:39,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:39,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375106871] [2019-12-07 17:49:39,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:39,892 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:39,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:39,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1334517757, now seen corresponding path program 1 times [2019-12-07 17:49:39,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:39,894 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152351820] [2019-12-07 17:49:39,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:39,910 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:39,989 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:49:39,990 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:49:39,990 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:49:39,990 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:49:39,990 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:49:39,990 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:39,990 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:49:39,990 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:49:39,990 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2019-12-07 17:49:39,991 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:49:39,991 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:49:40,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:40,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:40,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:40,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:40,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:40,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:40,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:40,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:40,072 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:49:40,072 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:40,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:40,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:40,087 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:40,087 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:40,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:40,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:40,095 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:40,096 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:40,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:40,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:40,103 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:40,103 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:40,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:40,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:40,111 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:40,111 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:40,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:40,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:40,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:40,118 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:40,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:40,121 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:40,124 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:40,124 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:40,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:40,128 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:40,137 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:49:40,137 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:42,383 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:49:42,385 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:49:42,385 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:49:42,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:49:42,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:49:42,385 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:49:42,385 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:42,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:49:42,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:49:42,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration1_Loop [2019-12-07 17:49:42,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:49:42,386 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:49:42,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:42,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:42,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:42,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:42,392 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:42,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:42,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:42,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:42,432 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:49:42,436 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,440 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 [2019-12-07 17:49:42,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,442 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:42,444 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:42,444 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,446 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,450 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 [2019-12-07 17:49:42,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,451 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:42,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:42,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,454 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,459 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 [2019-12-07 17:49:42,460 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,460 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,460 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,460 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,460 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:42,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:42,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,462 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,466 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 [2019-12-07 17:49:42,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,468 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:42,468 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:42,468 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,471 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,477 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 [2019-12-07 17:49:42,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,478 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:42,479 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:42,479 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,481 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,485 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 [2019-12-07 17:49:42,486 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,486 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,487 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,487 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,487 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:42,487 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:42,487 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,493 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 [2019-12-07 17:49:42,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,495 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,495 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:42,496 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:42,496 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,498 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,502 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 [2019-12-07 17:49:42,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,504 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,504 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,504 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,504 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:42,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:42,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,506 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-12-07 17:49:42,507 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,510 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 [2019-12-07 17:49:42,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,512 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:42,513 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:42,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,515 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:42,519 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 [2019-12-07 17:49:42,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,521 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,521 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,521 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:42,521 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:42,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,523 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:42,528 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 [2019-12-07 17:49:42,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,529 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:42,530 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:42,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,532 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:42,542 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 [2019-12-07 17:49:42,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,544 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:42,544 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:42,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,546 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,550 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:49:42,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,552 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,552 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,552 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:42,553 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:42,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,555 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,560 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 [2019-12-07 17:49:42,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,562 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,562 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:42,563 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:42,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,565 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:42,569 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:49:42,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:42,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:42,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:42,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:42,571 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:42,573 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:42,573 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:42,576 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:49:42,583 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-12-07 17:49:42,583 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:42,590 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:49:42,590 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:49:42,591 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:49:42,591 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 [] [2019-12-07 17:49:42,596 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:49:42,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:49:42,643 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:49:42,645 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:49:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:49:42,663 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:49:42,664 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:49:42,671 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:49:42,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:49:42,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:49:42,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:49:42,737 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 [2019-12-07 17:49:42,738 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states. Second operand 4 states. [2019-12-07 17:49:42,902 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. [2019-12-07 17:49:42,903 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 [2019-12-07 17:49:42,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:49:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 17:49:42,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 3 letters. [2019-12-07 17:49:42,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:42,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 6 letters. Loop has 3 letters. [2019-12-07 17:49:42,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:42,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 3 letters. Loop has 6 letters. [2019-12-07 17:49:42,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:42,908 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 59 transitions. [2019-12-07 17:49:42,912 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:49:42,915 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 20 states and 23 transitions. [2019-12-07 17:49:42,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-12-07 17:49:42,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2019-12-07 17:49:42,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 23 transitions. [2019-12-07 17:49:42,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:49:42,917 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-12-07 17:49:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 23 transitions. [2019-12-07 17:49:42,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2019-12-07 17:49:42,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-12-07 17:49:42,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-12-07 17:49:42,942 INFO L711 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-12-07 17:49:42,942 INFO L591 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-12-07 17:49:42,942 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 17:49:42,942 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2019-12-07 17:49:42,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:49:42,943 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:49:42,943 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:49:42,943 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 17:49:42,943 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 17:49:42,944 INFO L794 eck$LassoCheckResult]: Stem: 126#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 127#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 123#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 129#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 131#L13 assume !(~r > 0); 125#L16 [2019-12-07 17:49:42,944 INFO L796 eck$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 [2019-12-07 17:49:42,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:42,944 INFO L82 PathProgramCache]: Analyzing trace with hash 43048962, now seen corresponding path program 1 times [2019-12-07 17:49:42,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:42,945 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75577738] [2019-12-07 17:49:42,945 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:42,956 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:42,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:42,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1220476, now seen corresponding path program 1 times [2019-12-07 17:49:42,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:42,956 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861909491] [2019-12-07 17:49:42,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:42,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:42,962 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:42,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:42,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526915, now seen corresponding path program 1 times [2019-12-07 17:49:42,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:42,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568841202] [2019-12-07 17:49:42,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:42,980 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:43,035 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:49:43,036 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:49:43,036 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:49:43,036 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:49:43,036 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:49:43,036 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,036 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:49:43,036 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:49:43,036 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2019-12-07 17:49:43,036 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:49:43,036 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:49:43,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,106 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:49:43,106 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,109 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:43,109 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:43,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:43,112 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:43,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:43,120 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:43,120 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:43,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:43,127 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:43,127 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,132 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:43,132 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:49:43,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:43,653 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:49:43,654 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:49:43,654 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:49:43,655 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:49:43,655 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:49:43,655 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:49:43,655 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,655 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:49:43,655 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:49:43,655 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration2_Loop [2019-12-07 17:49:43,655 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:49:43,655 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:49:43,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,707 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:49:43,707 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,710 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 [2019-12-07 17:49:43,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:43,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:43,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:43,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:43,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:43,712 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:43,712 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:43,713 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:43,716 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 [2019-12-07 17:49:43,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:43,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:43,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:43,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:43,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:43,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:43,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:43,719 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,723 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 [2019-12-07 17:49:43,724 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:43,724 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:43,724 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:43,724 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:43,724 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:43,725 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:43,725 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:43,726 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:49:43,729 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:49:43,729 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:43,732 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:49:43,732 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:49:43,732 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:49:43,732 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~n) = 1*p_~n Supporting invariants [] [2019-12-07 17:49:43,734 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:49:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:49:43,748 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 17:49:43,749 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:49:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:49:43,758 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:49:43,759 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:49:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:49:43,783 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 [2019-12-07 17:49:43,783 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand 5 states. [2019-12-07 17:49:43,794 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. [2019-12-07 17:49:43,794 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 [2019-12-07 17:49:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-12-07 17:49:43,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2019-12-07 17:49:43,795 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 4 letters. [2019-12-07 17:49:43,795 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:43,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 9 letters. Loop has 4 letters. [2019-12-07 17:49:43,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:43,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 5 letters. Loop has 8 letters. [2019-12-07 17:49:43,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:43,796 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 30 transitions. [2019-12-07 17:49:43,797 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:49:43,798 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 20 states and 24 transitions. [2019-12-07 17:49:43,798 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-12-07 17:49:43,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2019-12-07 17:49:43,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 24 transitions. [2019-12-07 17:49:43,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:49:43,798 INFO L688 BuchiCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-12-07 17:49:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 24 transitions. [2019-12-07 17:49:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-12-07 17:49:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-12-07 17:49:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2019-12-07 17:49:43,800 INFO L711 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-12-07 17:49:43,800 INFO L591 BuchiCegarLoop]: Abstraction has 18 states and 22 transitions. [2019-12-07 17:49:43,800 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 17:49:43,800 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 22 transitions. [2019-12-07 17:49:43,800 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:49:43,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:49:43,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:49:43,801 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:49:43,801 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:49:43,801 INFO L794 eck$LassoCheckResult]: Stem: 227#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 228#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 222#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 230#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 232#L13 assume !(~r > 0); 225#L16 assume ~n > 0; 221#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 224#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 234#L13 assume ~r > 0; 219#L14 [2019-12-07 17:49:43,801 INFO L796 eck$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 [2019-12-07 17:49:43,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:43,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 1 times [2019-12-07 17:49:43,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:43,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452832726] [2019-12-07 17:49:43,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:43,813 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:43,813 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 2 times [2019-12-07 17:49:43,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:43,813 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518504612] [2019-12-07 17:49:43,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:43,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:43,818 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:43,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:43,818 INFO L82 PathProgramCache]: Analyzing trace with hash -507463707, now seen corresponding path program 1 times [2019-12-07 17:49:43,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:43,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436422954] [2019-12-07 17:49:43,818 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:43,835 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:43,875 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:49:43,875 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:49:43,875 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:49:43,875 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:49:43,875 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:49:43,875 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,875 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:49:43,875 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:49:43,875 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2019-12-07 17:49:43,875 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:49:43,875 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:49:43,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,888 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:43,922 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:49:43,922 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:43,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:43,930 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:49:43,930 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:43,934 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:43,946 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:49:43,946 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:49:55,957 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-12-07 17:49:55,959 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:49:55,960 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:49:55,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:49:55,960 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:49:55,960 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:49:55,960 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:55,960 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:49:55,960 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:49:55,960 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration3_Loop [2019-12-07 17:49:55,960 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:49:55,960 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:49:55,961 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:55,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:55,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:55,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:55,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:56,009 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:49:56,009 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:56,012 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 [2019-12-07 17:49:56,013 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:56,013 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:56,013 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:56,013 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:56,014 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:56,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:56,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:56,016 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:56,019 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 [2019-12-07 17:49:56,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:56,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:56,021 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:56,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:56,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:56,022 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:56,022 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:56,024 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:56,028 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 [2019-12-07 17:49:56,029 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:56,029 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:56,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:56,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:56,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:56,029 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:56,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:56,031 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:56,034 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 [2019-12-07 17:49:56,035 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:56,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:56,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:56,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:56,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:56,036 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:56,036 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:56,037 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:56,041 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 [2019-12-07 17:49:56,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:56,043 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:56,043 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:56,043 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:56,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:49:56,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:49:56,043 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:56,044 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-12-07 17:49:56,045 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:56,048 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 [2019-12-07 17:49:56,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:56,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:56,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:56,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:56,049 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:56,050 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:56,050 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:56,052 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:56,055 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 [2019-12-07 17:49:56,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:49:56,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:49:56,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:49:56,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:49:56,057 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:49:56,058 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:49:56,058 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:49:56,062 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:49:56,069 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2019-12-07 17:49:56,069 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:56,072 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:49:56,072 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:49:56,072 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:49:56,072 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 [] [2019-12-07 17:49:56,074 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:49:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:49:56,097 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:49:56,098 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:49:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:49:56,106 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:49:56,106 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:49:56,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:49:56,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:49:56,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:49:56,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:49:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:49:56,141 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 [2019-12-07 17:49:56,141 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 22 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-12-07 17:49:56,211 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. [2019-12-07 17:49:56,211 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 [2019-12-07 17:49:56,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:49:56,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-12-07 17:49:56,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 3 letters. [2019-12-07 17:49:56,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:56,212 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 17:49:56,212 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:56,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 9 letters. Loop has 6 letters. [2019-12-07 17:49:56,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:49:56,213 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 50 transitions. [2019-12-07 17:49:56,215 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:49:56,216 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 44 transitions. [2019-12-07 17:49:56,216 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2019-12-07 17:49:56,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2019-12-07 17:49:56,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 44 transitions. [2019-12-07 17:49:56,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:49:56,216 INFO L688 BuchiCegarLoop]: Abstraction has 36 states and 44 transitions. [2019-12-07 17:49:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 44 transitions. [2019-12-07 17:49:56,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2019-12-07 17:49:56,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 17:49:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-12-07 17:49:56,219 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-12-07 17:49:56,219 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-12-07 17:49:56,219 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 17:49:56,219 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 38 transitions. [2019-12-07 17:49:56,220 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 17:49:56,220 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:49:56,220 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:49:56,220 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:49:56,220 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 17:49:56,220 INFO L794 eck$LassoCheckResult]: Stem: 355#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 356#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 357#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 360#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 361#L13 assume ~r > 0; 351#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 358#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 375#L13 assume !(~r > 0); 353#L16 assume ~n > 0; 350#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 352#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 365#L13 assume ~r > 0; 349#L14 [2019-12-07 17:49:56,220 INFO L796 eck$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 [2019-12-07 17:49:56,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:56,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1683587899, now seen corresponding path program 2 times [2019-12-07 17:49:56,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:56,221 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197540781] [2019-12-07 17:49:56,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:56,233 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:56,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:56,233 INFO L82 PathProgramCache]: Analyzing trace with hash 56702, now seen corresponding path program 3 times [2019-12-07 17:49:56,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:56,233 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938608800] [2019-12-07 17:49:56,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:56,237 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:56,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:49:56,238 INFO L82 PathProgramCache]: Analyzing trace with hash -860956668, now seen corresponding path program 3 times [2019-12-07 17:49:56,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:49:56,238 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101919633] [2019-12-07 17:49:56,238 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:49:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:49:56,251 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:49:56,291 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:49:56,291 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:49:56,291 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:49:56,291 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:49:56,291 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:49:56,291 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:56,291 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:49:56,291 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:49:56,291 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2019-12-07 17:49:56,292 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:49:56,292 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:49:56,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:56,299 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:56,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:56,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:56,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:49:56,337 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:49:56,337 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:49:56,340 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:49:56,340 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:49:56,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:49:56,350 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:08,360 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2019-12-07 17:50:08,362 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:50:08,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:50:08,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:50:08,363 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:50:08,363 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:50:08,363 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:08,363 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:50:08,363 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:50:08,363 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration4_Loop [2019-12-07 17:50:08,363 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:50:08,363 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:50:08,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:08,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:08,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:08,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:08,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:08,410 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:50:08,410 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:08,412 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 [2019-12-07 17:50:08,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:08,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:08,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:08,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:08,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:08,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:08,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:08,417 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:08,421 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 [2019-12-07 17:50:08,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:08,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:08,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:08,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:08,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:08,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:08,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:08,424 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:08,427 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 [2019-12-07 17:50:08,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:08,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:08,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:08,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:08,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:08,428 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:08,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:08,430 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:08,433 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 [2019-12-07 17:50:08,434 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:08,434 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:08,434 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:08,434 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:08,434 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:08,435 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:08,435 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:08,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:08,446 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 17:50:08,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:08,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:08,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:08,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:08,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:08,448 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:08,448 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:08,449 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-12-07 17:50:08,450 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:08,453 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 [2019-12-07 17:50:08,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:08,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:08,454 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:08,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:08,454 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2019-12-07 17:50:08,456 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2019-12-07 17:50:08,456 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:08,459 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:50:08,465 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2019-12-07 17:50:08,465 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:08,473 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:50:08,473 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:50:08,473 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:50:08,473 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 [] [2019-12-07 17:50:08,475 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:50:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:08,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:08,507 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:50:08,508 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:08,516 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:50:08,517 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:08,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,520 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:50:08,557 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 [2019-12-07 17:50:08,558 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-12-07 17:50:08,626 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. [2019-12-07 17:50:08,626 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 [2019-12-07 17:50:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:50:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-12-07 17:50:08,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 17:50:08,627 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:08,627 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:50:08,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:08,650 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:50:08,651 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:08,658 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:50:08,659 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:08,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,677 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:50:08,695 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 [2019-12-07 17:50:08,695 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-12-07 17:50:08,753 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. [2019-12-07 17:50:08,754 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 [2019-12-07 17:50:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:50:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 13 transitions. [2019-12-07 17:50:08,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 13 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 17:50:08,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:08,754 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:50:08,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:08,776 INFO L264 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:50:08,777 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:08,785 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 17:50:08,785 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:08,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 17:50:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:50:08,825 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 [2019-12-07 17:50:08,825 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 38 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-12-07 17:50:08,894 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. [2019-12-07 17:50:08,894 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 [2019-12-07 17:50:08,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:50:08,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 17:50:08,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 3 letters. [2019-12-07 17:50:08,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:08,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2019-12-07 17:50:08,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:08,895 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 6 letters. [2019-12-07 17:50:08,895 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:08,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 68 transitions. [2019-12-07 17:50:08,896 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2019-12-07 17:50:08,897 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 41 states and 51 transitions. [2019-12-07 17:50:08,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2019-12-07 17:50:08,897 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2019-12-07 17:50:08,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2019-12-07 17:50:08,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:50:08,898 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-12-07 17:50:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2019-12-07 17:50:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24. [2019-12-07 17:50:08,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 17:50:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2019-12-07 17:50:08,900 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-12-07 17:50:08,900 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2019-12-07 17:50:08,900 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-12-07 17:50:08,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2019-12-07 17:50:08,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2019-12-07 17:50:08,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:50:08,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:50:08,901 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:50:08,901 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1] [2019-12-07 17:50:08,901 INFO L794 eck$LassoCheckResult]: Stem: 724#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 725#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 723#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 732#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 733#L13 assume !(~r > 0); 726#L16 assume ~n > 0; 720#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 721#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 734#L13 assume ~r > 0; 718#L14 [2019-12-07 17:50:08,901 INFO L796 eck$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 [2019-12-07 17:50:08,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:08,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1891526918, now seen corresponding path program 2 times [2019-12-07 17:50:08,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:08,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48946194] [2019-12-07 17:50:08,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:08,909 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:50:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:08,909 INFO L82 PathProgramCache]: Analyzing trace with hash 828947705, now seen corresponding path program 1 times [2019-12-07 17:50:08,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:08,909 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822764243] [2019-12-07 17:50:08,909 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:08,915 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:50:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:08,915 INFO L82 PathProgramCache]: Analyzing trace with hash 559352800, now seen corresponding path program 4 times [2019-12-07 17:50:08,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:08,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747703618] [2019-12-07 17:50:08,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:08,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 17:50:08,959 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747703618] [2019-12-07 17:50:08,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224283517] [2019-12-07 17:50:08,960 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:08,982 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 17:50:08,982 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 17:50:08,982 INFO L264 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:50:08,983 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:08,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 17:50:08,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 17:50:08,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-12-07 17:50:08,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897700785] [2019-12-07 17:50:09,096 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:50:09,096 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:50:09,096 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:50:09,096 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:50:09,096 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:50:09,096 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:09,096 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:50:09,096 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:50:09,096 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2019-12-07 17:50:09,096 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:50:09,096 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:50:09,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:09,098 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:09,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:09,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:09,158 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:50:09,158 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:09,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:09,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:09,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:09,163 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:09,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:09,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:09,169 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:09,169 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:09,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:09,173 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:09,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:09,176 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:09,180 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:09,180 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:09,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:50:09,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:14,434 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:50:14,436 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:50:14,437 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:50:14,437 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:50:14,437 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:50:14,437 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:50:14,437 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,437 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:50:14,437 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:50:14,437 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration5_Loop [2019-12-07 17:50:14,437 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:50:14,437 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:50:14,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,493 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:50:14,493 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,496 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 [2019-12-07 17:50:14,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:14,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:14,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:14,497 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:14,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:14,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:14,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:14,498 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:14,504 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 [2019-12-07 17:50:14,505 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:14,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:14,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:14,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:14,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:14,505 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:14,505 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:14,506 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/bin/uautomizer/z3 Starting monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,510 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 [2019-12-07 17:50:14,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:14,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:14,511 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:14,511 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:14,511 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:14,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:14,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:14,512 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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) Waiting until toolchain timeout for monitored process 64 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,516 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 [2019-12-07 17:50:14,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:14,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:14,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:14,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:14,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:14,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:14,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:14,522 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:50:14,524 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:50:14,525 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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) Waiting until toolchain timeout for monitored process 65 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,530 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:50:14,530 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:50:14,530 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:50:14,531 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_~m) = 1*p_~m Supporting invariants [] [2019-12-07 17:50:14,532 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:50:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:14,550 INFO L264 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 17:50:14,551 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:14,562 INFO L264 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2019-12-07 17:50:14,563 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:50:14,594 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 [2019-12-07 17:50:14,595 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 9 Second operand 7 states. [2019-12-07 17:50:14,651 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. [2019-12-07 17:50:14,652 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 [2019-12-07 17:50:14,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 17:50:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 20 transitions. [2019-12-07 17:50:14,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 7 letters. [2019-12-07 17:50:14,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:14,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 16 letters. Loop has 7 letters. [2019-12-07 17:50:14,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:14,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 20 transitions. Stem has 9 letters. Loop has 14 letters. [2019-12-07 17:50:14,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:14,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 104 states and 131 transitions. [2019-12-07 17:50:14,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2019-12-07 17:50:14,657 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 104 states to 104 states and 131 transitions. [2019-12-07 17:50:14,657 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2019-12-07 17:50:14,657 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-12-07 17:50:14,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 131 transitions. [2019-12-07 17:50:14,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:50:14,657 INFO L688 BuchiCegarLoop]: Abstraction has 104 states and 131 transitions. [2019-12-07 17:50:14,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states and 131 transitions. [2019-12-07 17:50:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 59. [2019-12-07 17:50:14,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2019-12-07 17:50:14,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 79 transitions. [2019-12-07 17:50:14,661 INFO L711 BuchiCegarLoop]: Abstraction has 59 states and 79 transitions. [2019-12-07 17:50:14,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:50:14,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:50:14,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:50:14,664 INFO L87 Difference]: Start difference. First operand 59 states and 79 transitions. Second operand 6 states. [2019-12-07 17:50:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:50:14,700 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2019-12-07 17:50:14,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:50:14,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 95 transitions. [2019-12-07 17:50:14,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2019-12-07 17:50:14,702 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 37 states and 43 transitions. [2019-12-07 17:50:14,702 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-12-07 17:50:14,702 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-12-07 17:50:14,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 43 transitions. [2019-12-07 17:50:14,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:50:14,703 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 43 transitions. [2019-12-07 17:50:14,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 43 transitions. [2019-12-07 17:50:14,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2019-12-07 17:50:14,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 17:50:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-12-07 17:50:14,704 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-12-07 17:50:14,704 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-12-07 17:50:14,704 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-12-07 17:50:14,705 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 28 transitions. [2019-12-07 17:50:14,705 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:50:14,705 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:50:14,705 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:50:14,705 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:50:14,705 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 17:50:14,706 INFO L794 eck$LassoCheckResult]: Stem: 1150#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1151#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1152#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1157#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1163#L13 assume !(~r > 0); 1162#L16 assume ~n > 0; 1153#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1161#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1160#L13 assume ~r > 0; 1144#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1142#pENTRY [2019-12-07 17:50:14,706 INFO L796 eck$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 [2019-12-07 17:50:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:14,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1492207714, now seen corresponding path program 5 times [2019-12-07 17:50:14,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:14,706 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037942767] [2019-12-07 17:50:14,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,714 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:50:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:14,714 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 2 times [2019-12-07 17:50:14,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:14,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419682644] [2019-12-07 17:50:14,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,717 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:50:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:14,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1953652509, now seen corresponding path program 6 times [2019-12-07 17:50:14,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:14,718 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611696322] [2019-12-07 17:50:14,718 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,726 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:50:14,759 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:50:14,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:50:14,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:50:14,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:50:14,759 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:50:14,759 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,759 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:50:14,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:50:14,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2019-12-07 17:50:14,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:50:14,760 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:50:14,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,767 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,802 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:50:14,802 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:14,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:14,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:14,808 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:14,808 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:14,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:14,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:14,821 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:14,821 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:14,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:14,824 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:14,830 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:50:14,830 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:14,834 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:50:14,835 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:50:14,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:50:14,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:50:14,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:50:14,836 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:50:14,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:50:14,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:50:14,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration6_Loop [2019-12-07 17:50:14,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:50:14,836 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:50:14,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:14,884 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:50:14,884 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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) Waiting until toolchain timeout for monitored process 70 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,887 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 [2019-12-07 17:50:14,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:14,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:14,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:14,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:14,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:14,888 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:14,888 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:14,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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) Waiting until toolchain timeout for monitored process 71 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,893 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 [2019-12-07 17:50:14,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:14,894 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:14,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:14,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:14,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:14,894 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:14,894 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:14,895 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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) Waiting until toolchain timeout for monitored process 72 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,899 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 [2019-12-07 17:50:14,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:14,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:14,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:14,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:14,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:14,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:14,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:14,902 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:14,905 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 [2019-12-07 17:50:14,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:14,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:14,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:14,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:14,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:14,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:14,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:14,908 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:50:14,911 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:50:14,911 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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) Waiting until toolchain timeout for monitored process 74 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:14,913 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:50:14,913 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:50:14,913 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:50:14,913 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2019-12-07 17:50:14,914 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:50:14,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:14,938 INFO L264 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 17:50:14,938 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:14,944 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:50:14,945 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:14,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:50:14,955 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 [2019-12-07 17:50:14,955 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 28 transitions. cyclomatic complexity: 7 Second operand 4 states. [2019-12-07 17:50:14,978 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. [2019-12-07 17:50:14,978 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 [2019-12-07 17:50:14,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:50:14,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 17:50:14,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 4 letters. [2019-12-07 17:50:14,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:14,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 14 letters. Loop has 4 letters. [2019-12-07 17:50:14,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:14,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 10 letters. Loop has 8 letters. [2019-12-07 17:50:14,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:14,979 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 70 transitions. [2019-12-07 17:50:14,980 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:50:14,981 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 39 states and 46 transitions. [2019-12-07 17:50:14,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2019-12-07 17:50:14,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2019-12-07 17:50:14,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 46 transitions. [2019-12-07 17:50:14,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-12-07 17:50:14,982 INFO L688 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-12-07 17:50:14,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 46 transitions. [2019-12-07 17:50:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2019-12-07 17:50:14,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 17:50:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-07 17:50:14,983 INFO L711 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 17:50:14,983 INFO L591 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 17:50:14,983 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-12-07 17:50:14,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2019-12-07 17:50:14,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 17:50:14,984 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 17:50:14,984 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 17:50:14,984 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2019-12-07 17:50:14,984 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 17:50:14,984 INFO L794 eck$LassoCheckResult]: Stem: 1308#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_~m~0, main_~n~0, main_~r~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~r~0 := main_#t~nondet4;havoc main_#t~nondet4; 1309#L28 assume (main_~m~0 >= 0 && main_~n~0 >= 0) && main_~r~0 >= 0; 1312#L29 call main_#t~ret5 := p(main_~m~0, main_~n~0, main_~r~0);< 1319#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1320#L13 assume !(~r > 0); 1321#L16 assume ~n > 0; 1314#L17 call #t~ret1 := p(~r, ~n - 1, ~m);< 1323#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1322#L13 assume ~r > 0; 1313#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1307#pENTRY ~m := #in~m;~n := #in~n;~r := #in~r; 1318#L13 assume ~r > 0; 1303#L14 call #t~ret0 := p(~m, ~r - 1, ~n);< 1304#pENTRY [2019-12-07 17:50:14,984 INFO L796 eck$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 [2019-12-07 17:50:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:14,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1448494295, now seen corresponding path program 7 times [2019-12-07 17:50:14,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:14,985 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206374476] [2019-12-07 17:50:14,985 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,993 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:50:14,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:14,993 INFO L82 PathProgramCache]: Analyzing trace with hash 929596, now seen corresponding path program 3 times [2019-12-07 17:50:14,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:14,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629132094] [2019-12-07 17:50:14,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:14,996 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:50:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:14,997 INFO L82 PathProgramCache]: Analyzing trace with hash 90839314, now seen corresponding path program 8 times [2019-12-07 17:50:14,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:50:14,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031051550] [2019-12-07 17:50:14,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:50:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:50:15,006 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:50:15,039 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:50:15,039 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:50:15,039 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:50:15,039 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:50:15,040 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-12-07 17:50:15,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:15,040 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:50:15,040 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:50:15,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2019-12-07 17:50:15,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:50:15,040 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:50:15,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,045 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,047 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,077 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:50:15,077 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:15,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:15,082 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:15,082 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:15,085 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:15,089 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:15,089 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,093 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:15,093 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:15,095 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:15,095 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:15,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:15,102 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-12-07 17:50:15,102 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-12-07 17:50:15,105 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-12-07 17:50:15,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-12-07 17:50:15,156 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-12-07 17:50:15,157 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 17:50:15,157 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 17:50:15,157 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 17:50:15,157 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 17:50:15,157 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 17:50:15,157 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 17:50:15,157 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 17:50:15,157 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 17:50:15,157 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeeJonesBen-Amram-POPL2001-Ex4.c_Iteration7_Loop [2019-12-07 17:50:15,157 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 17:50:15,157 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 17:50:15,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 17:50:15,195 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 17:50:15,195 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,198 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 [2019-12-07 17:50:15,198 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:15,199 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:15,199 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:15,199 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:15,199 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:15,199 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:15,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:15,200 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,203 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 [2019-12-07 17:50:15,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:15,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:15,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:15,205 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:15,205 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:15,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:15,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:15,207 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,210 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 [2019-12-07 17:50:15,211 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:15,211 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:15,212 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:15,212 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:15,212 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:15,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:15,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:15,213 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,216 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 [2019-12-07 17:50:15,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 17:50:15,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 17:50:15,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 17:50:15,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 17:50:15,218 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 17:50:15,218 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 17:50:15,218 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 17:50:15,220 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 17:50:15,222 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-12-07 17:50:15,222 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_8a6f8408-c03d-41ba-aefe-ef7bea761423/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 [2019-12-07 17:50:15,224 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 17:50:15,224 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-12-07 17:50:15,224 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 17:50:15,224 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(p_#in~n) = 1*p_#in~n Supporting invariants [] [2019-12-07 17:50:15,225 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-12-07 17:50:15,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:15,248 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:50:15,249 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:15,256 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:50:15,256 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:50:15,266 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 [2019-12-07 17:50:15,266 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 17:50:15,289 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. [2019-12-07 17:50:15,289 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 [2019-12-07 17:50:15,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:50:15,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 17:50:15,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2019-12-07 17:50:15,289 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:15,290 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:50:15,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:15,310 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:50:15,311 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:15,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:15,317 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:50:15,317 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:50:15,327 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 [2019-12-07 17:50:15,327 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 17:50:15,348 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. [2019-12-07 17:50:15,348 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 [2019-12-07 17:50:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:50:15,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2019-12-07 17:50:15,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 4 letters. [2019-12-07 17:50:15,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:15,349 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-12-07 17:50:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:50:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:15,370 INFO L264 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 17:50:15,371 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:50:15,377 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 17:50:15,377 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 17:50:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:50:15,387 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 [2019-12-07 17:50:15,387 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 17:50:15,410 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. [2019-12-07 17:50:15,410 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 [2019-12-07 17:50:15,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-12-07 17:50:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2019-12-07 17:50:15,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 4 letters. [2019-12-07 17:50:15,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:15,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 17 letters. Loop has 4 letters. [2019-12-07 17:50:15,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:15,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 8 letters. [2019-12-07 17:50:15,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 17:50:15,412 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 53 transitions. [2019-12-07 17:50:15,413 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:50:15,413 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 0 states and 0 transitions. [2019-12-07 17:50:15,413 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 17:50:15,413 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 17:50:15,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 17:50:15,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 17:50:15,413 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:50:15,413 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:50:15,413 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 17:50:15,413 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-12-07 17:50:15,414 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 17:50:15,414 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 17:50:15,414 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 17:50:15,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 05:50:15 BoogieIcfgContainer [2019-12-07 17:50:15,418 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 17:50:15,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:50:15,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:50:15,418 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:50:15,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:49:39" (3/4) ... [2019-12-07 17:50:15,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 17:50:15,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:50:15,422 INFO L168 Benchmark]: Toolchain (without parser) took 36025.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 940.7 MB in the beginning and 967.5 MB in the end (delta: -26.9 MB). Peak memory consumption was 135.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:50:15,422 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:50:15,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:50:15,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:50:15,423 INFO L168 Benchmark]: Boogie Preprocessor took 10.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:50:15,423 INFO L168 Benchmark]: RCFGBuilder took 133.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:50:15,424 INFO L168 Benchmark]: BuchiAutomizer took 35688.21 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 967.5 MB in the end (delta: 129.8 MB). Peak memory consumption was 172.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:50:15,424 INFO L168 Benchmark]: Witness Printer took 2.61 ms. Allocated memory is still 1.2 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:50:15,426 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 167.48 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -176.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.87 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 133.15 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 35688.21 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 42.5 MB). Free memory was 1.1 GB in the beginning and 967.5 MB in the end (delta: 129.8 MB). Peak memory consumption was 172.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.61 ms. Allocated memory is still 1.2 GB. Free memory is still 967.5 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 35.6s and 8 iterations. TraceHistogramMax:3. Analysis of lassos took 34.2s. Construction of modules took 0.1s. Büchi inclusion checks took 1.1s. 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, 0.1s 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: 6ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 19 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 2 LassoNonterminationAnalysisTime: 32.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...