./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 e334e85dd18553afecc96b27cf49a003304cbca8 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:04:53,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:04:53,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:04:53,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:04:53,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:04:53,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:04:53,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:04:53,532 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:04:53,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:04:53,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:04:53,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:04:53,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:04:53,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:04:53,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:04:53,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:04:53,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:04:53,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:04:53,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:04:53,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:04:53,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:04:53,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:04:53,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:04:53,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:04:53,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:04:53,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:04:53,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:04:53,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:04:53,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:04:53,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:04:53,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:04:53,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:04:53,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:04:53,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:04:53,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:04:53,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:04:53,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:04:53,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:04:53,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:04:53,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:04:53,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:04:53,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:04:53,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:04:53,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:04:53,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:04:53,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:04:53,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:04:53,616 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:04:53,616 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:04:53,616 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:04:53,617 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:04:53,617 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:04:53,617 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:04:53,617 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:04:53,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:04:53,618 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:04:53,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:04:53,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:04:53,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:04:53,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:04:53,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:04:53,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:04:53,619 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:04:53,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:04:53,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:04:53,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:04:53,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:04:53,620 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:04:53,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:04:53,621 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:04:53,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:04:53,621 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:04:53,622 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:04:53,623 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e334e85dd18553afecc96b27cf49a003304cbca8 [2020-11-29 19:04:53,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:04:53,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:04:53,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:04:53,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:04:53,873 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:04:53,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2020-11-29 19:04:53,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/data/d6795af7d/aa5a9eecc2b44d1c8f1318fe7c7b1d52/FLAGe85ccc373 [2020-11-29 19:04:54,396 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:04:54,396 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2020-11-29 19:04:54,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/data/d6795af7d/aa5a9eecc2b44d1c8f1318fe7c7b1d52/FLAGe85ccc373 [2020-11-29 19:04:54,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/data/d6795af7d/aa5a9eecc2b44d1c8f1318fe7c7b1d52 [2020-11-29 19:04:54,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:04:54,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:04:54,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:04:54,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:04:54,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:04:54,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:04:54" (1/1) ... [2020-11-29 19:04:54,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc462a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:54, skipping insertion in model container [2020-11-29 19:04:54,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:04:54" (1/1) ... [2020-11-29 19:04:54,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:04:54,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:04:54,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:04:54,999 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:04:55,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:04:55,054 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:04:55,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55 WrapperNode [2020-11-29 19:04:55,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:04:55,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:04:55,057 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:04:55,057 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:04:55,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:04:55,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:04:55,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:04:55,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:04:55,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,109 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... [2020-11-29 19:04:55,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:04:55,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:04:55,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:04:55,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:04:55,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:55,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:04:55,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:04:55,372 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:04:55,373 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 19:04:55,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:55 BoogieIcfgContainer [2020-11-29 19:04:55,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:04:55,376 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:04:55,376 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:04:55,380 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:04:55,381 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:04:55,382 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:04:54" (1/3) ... [2020-11-29 19:04:55,383 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27046933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:04:55, skipping insertion in model container [2020-11-29 19:04:55,383 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:04:55,383 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:04:55" (2/3) ... [2020-11-29 19:04:55,384 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27046933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:04:55, skipping insertion in model container [2020-11-29 19:04:55,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:04:55,384 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:55" (3/3) ... [2020-11-29 19:04:55,386 INFO L373 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2020-11-29 19:04:55,464 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:04:55,464 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:04:55,465 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:04:55,465 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:04:55,465 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:04:55,465 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:04:55,465 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:04:55,466 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:04:55,477 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:04:55,492 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:04:55,492 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:04:55,492 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:04:55,498 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:04:55,498 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:04:55,498 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:04:55,498 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:04:55,499 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:04:55,500 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:04:55,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:04:55,500 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:04:55,500 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:04:55,507 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L17true assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 9#L21-2true [2020-11-29 19:04:55,507 INFO L796 eck$LassoCheckResult]: Loop: 9#L21-2true assume !!(main_~v1~0 > 0); 3#L21true assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 9#L21-2true [2020-11-29 19:04:55,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-29 19:04:55,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:55,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681323891] [2020-11-29 19:04:55,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:55,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:55,595 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:55,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:55,601 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:55,615 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2020-11-29 19:04:55,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:55,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716047669] [2020-11-29 19:04:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:55,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:55,632 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:55,634 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:55,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:55,635 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2020-11-29 19:04:55,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:55,636 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994181642] [2020-11-29 19:04:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:55,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:55,654 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:55,656 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:55,775 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:04:55,776 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:04:55,776 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:04:55,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:04:55,776 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:04:55,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:55,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:04:55,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:04:55,777 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2020-11-29 19:04:55,777 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:04:55,777 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:04:55,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:55,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:55,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:55,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:55,954 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:04:55,955 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:55,960 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:55,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:04:55,968 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:04:55,968 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:55,993 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:55,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:04:55,997 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:04:55,997 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:56,019 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:56,019 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:56,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:04:56,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:04:56,196 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:04:56,197 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:04:56,197 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:04:56,197 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:04:56,198 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:04:56,198 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:04:56,198 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:56,198 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:04:56,198 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:04:56,198 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration1_Loop [2020-11-29 19:04:56,198 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:04:56,198 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:04:56,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:56,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:56,235 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:56,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:56,394 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:04:56,398 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:56,405 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 [2020-11-29 19:04:56,408 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:56,408 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:56,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:56,409 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:56,423 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:04:56,423 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:04:56,436 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:56,481 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 [2020-11-29 19:04:56,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:56,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:56,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:56,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:56,488 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:04:56,488 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:56,494 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:56,524 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 [2020-11-29 19:04:56,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:56,526 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:04:56,526 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:56,526 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:56,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:56,528 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:04:56,528 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:04:56,531 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:04:56,537 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 19:04:56,537 INFO L444 ModelExtractionUtils]: 0 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_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:56,544 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:04:56,544 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:04:56,544 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:04:56,545 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:56,581 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:04:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:56,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:04:56,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:56,657 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:04:56,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:56,675 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:04:56,676 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 19:04:56,734 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2020-11-29 19:04:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:04:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:04:56,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-29 19:04:56,741 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 19:04:56,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:56,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 19:04:56,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:56,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 19:04:56,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:56,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2020-11-29 19:04:56,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:04:56,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2020-11-29 19:04:56,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 19:04:56,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 19:04:56,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-29 19:04:56,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:04:56,752 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 19:04:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-29 19:04:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-29 19:04:56,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 19:04:56,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-11-29 19:04:56,777 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 19:04:56,777 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 19:04:56,777 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:04:56,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-11-29 19:04:56,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:04:56,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:04:56,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:04:56,778 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 19:04:56,779 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:04:56,779 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 78#L21-2 assume !!(main_~v1~0 > 0); 72#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 73#L21-2 [2020-11-29 19:04:56,779 INFO L796 eck$LassoCheckResult]: Loop: 73#L21-2 assume !!(main_~v1~0 > 0); 79#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 73#L21-2 [2020-11-29 19:04:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:56,780 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2020-11-29 19:04:56,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:56,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369230410] [2020-11-29 19:04:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:56,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:56,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369230410] [2020-11-29 19:04:56,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:04:56,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:04:56,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006139221] [2020-11-29 19:04:56,840 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:04:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:56,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2020-11-29 19:04:56,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:56,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734458083] [2020-11-29 19:04:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:56,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:56,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:56,861 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:56,884 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:04:56,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:04:56,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:04:56,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:04:56,885 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:04:56,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:56,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:04:56,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:04:56,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2020-11-29 19:04:56,885 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:04:56,886 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:04:56,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:56,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:56,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:56,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,004 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:04:57,004 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:57,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:57,011 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:57,014 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:04:57,015 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:57,085 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:57,086 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:57,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:04:57,132 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:57,282 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:04:57,284 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:04:57,284 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:04:57,284 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:04:57,284 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:04:57,284 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:04:57,284 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:57,284 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:04:57,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:04:57,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration2_Loop [2020-11-29 19:04:57,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:04:57,285 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:04:57,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,420 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:04:57,421 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:57,429 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 [2020-11-29 19:04:57,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:57,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:57,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:57,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:57,446 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:04:57,446 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:57,459 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:57,515 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:04:57,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:57,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:04:57,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:57,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:57,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:57,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:04:57,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:04:57,539 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:57,565 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 19:04:57,565 INFO L444 ModelExtractionUtils]: 0 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_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:57,572 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:04:57,572 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:04:57,572 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:04:57,572 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~v2~0) = 1*ULTIMATE.start_main_~m~0 - 1*ULTIMATE.start_main_~v2~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:57,606 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:04:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:57,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:04:57,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:57,643 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:04:57,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:57,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:57,644 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:04:57,644 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 19:04:57,657 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2020-11-29 19:04:57,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:04:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:04:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 19:04:57,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 19:04:57,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:57,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 19:04:57,660 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:57,660 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-29 19:04:57,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:57,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2020-11-29 19:04:57,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:04:57,662 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2020-11-29 19:04:57,662 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 19:04:57,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 19:04:57,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2020-11-29 19:04:57,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:04:57,663 INFO L691 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-29 19:04:57,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2020-11-29 19:04:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 19:04:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:04:57,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2020-11-29 19:04:57,665 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2020-11-29 19:04:57,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:57,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:04:57,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:04:57,670 INFO L87 Difference]: Start difference. First operand 12 states and 17 transitions. Second operand 3 states. [2020-11-29 19:04:57,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:57,678 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-11-29 19:04:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:04:57,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2020-11-29 19:04:57,680 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:04:57,680 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 13 states and 17 transitions. [2020-11-29 19:04:57,680 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 19:04:57,681 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 19:04:57,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2020-11-29 19:04:57,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:04:57,681 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-29 19:04:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2020-11-29 19:04:57,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-29 19:04:57,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:04:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-11-29 19:04:57,683 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-29 19:04:57,683 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-29 19:04:57,683 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:04:57,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2020-11-29 19:04:57,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:04:57,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:04:57,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:04:57,685 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1] [2020-11-29 19:04:57,685 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:04:57,685 INFO L794 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 160#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 161#L21-2 assume !!(main_~v1~0 > 0); 157#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 158#L21-2 assume !!(main_~v1~0 > 0); 155#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 156#L21-2 assume !!(main_~v1~0 > 0); 164#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 162#L21-2 [2020-11-29 19:04:57,685 INFO L796 eck$LassoCheckResult]: Loop: 162#L21-2 assume !!(main_~v1~0 > 0); 163#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 162#L21-2 [2020-11-29 19:04:57,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:57,686 INFO L82 PathProgramCache]: Analyzing trace with hash -422236399, now seen corresponding path program 1 times [2020-11-29 19:04:57,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:57,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308981708] [2020-11-29 19:04:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:04:57,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308981708] [2020-11-29 19:04:57,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141768347] [2020-11-29 19:04:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:04:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:57,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:04:57,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-29 19:04:57,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:04:57,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2020-11-29 19:04:57,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041968860] [2020-11-29 19:04:57,768 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 19:04:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:57,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2020-11-29 19:04:57,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:57,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376156469] [2020-11-29 19:04:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:57,773 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:57,784 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:57,785 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:57,809 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:04:57,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:04:57,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:04:57,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:04:57,809 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:04:57,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:57,809 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:04:57,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:04:57,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2020-11-29 19:04:57,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:04:57,810 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:04:57,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:57,913 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:04:57,913 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:57,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:57,920 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:57,932 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:04:57,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:57,956 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:57,956 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:57,983 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:04:57,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:04:58,137 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:04:58,139 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:04:58,139 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:04:58,139 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:04:58,139 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:04:58,140 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:04:58,140 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:58,140 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:04:58,140 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:04:58,140 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration3_Loop [2020-11-29 19:04:58,140 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:04:58,140 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:04:58,142 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:58,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:58,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:58,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:58,227 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:04:58,228 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:58,235 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 [2020-11-29 19:04:58,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:58,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:58,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:58,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:58,240 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:04:58,240 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:58,244 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:58,285 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 [2020-11-29 19:04:58,287 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:58,287 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:04:58,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:58,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:58,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:58,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:04:58,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:58,293 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:04:58,304 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-29 19:04:58,304 INFO L444 ModelExtractionUtils]: 0 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_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:58,324 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:04:58,324 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:04:58,324 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:04:58,324 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v2~0, ULTIMATE.start_main_~m~0) = -1*ULTIMATE.start_main_~v2~0 + 1*ULTIMATE.start_main_~m~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:58,356 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:04:58,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:58,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:04:58,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:58,476 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:04:58,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:58,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:58,477 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:04:58,477 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 19:04:58,490 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2020-11-29 19:04:58,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:04:58,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:04:58,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 19:04:58,491 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 19:04:58,491 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:58,491 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:04:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:58,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:04:58,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:58,526 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:04:58,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:58,527 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:04:58,527 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 19:04:58,535 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 14 states and 20 transitions. Complement of second has 5 states. [2020-11-29 19:04:58,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:04:58,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:04:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2020-11-29 19:04:58,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 19:04:58,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:58,537 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 19:04:58,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:58,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:04:58,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:58,574 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:04:58,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:58,575 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 19:04:58,575 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 19:04:58,597 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 16 states and 23 transitions. Complement of second has 4 states. [2020-11-29 19:04:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 19:04:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:04:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-29 19:04:58,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-29 19:04:58,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:58,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2020-11-29 19:04:58,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:58,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-29 19:04:58,600 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:58,600 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2020-11-29 19:04:58,601 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 19:04:58,602 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 19 transitions. [2020-11-29 19:04:58,602 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 19:04:58,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-29 19:04:58,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 19 transitions. [2020-11-29 19:04:58,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:04:58,602 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 19 transitions. [2020-11-29 19:04:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 19 transitions. [2020-11-29 19:04:58,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 7. [2020-11-29 19:04:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 19:04:58,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2020-11-29 19:04:58,604 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2020-11-29 19:04:58,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:04:58,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:04:58,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:04:58,605 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. Second operand 4 states. [2020-11-29 19:04:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:04:58,616 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2020-11-29 19:04:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:04:58,617 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2020-11-29 19:04:58,618 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 19:04:58,618 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2020-11-29 19:04:58,618 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 19:04:58,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 19:04:58,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2020-11-29 19:04:58,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:04:58,618 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2020-11-29 19:04:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2020-11-29 19:04:58,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 6. [2020-11-29 19:04:58,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 19:04:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2020-11-29 19:04:58,620 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2020-11-29 19:04:58,620 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2020-11-29 19:04:58,620 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 19:04:58,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2020-11-29 19:04:58,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-29 19:04:58,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:04:58,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:04:58,621 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:04:58,621 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2020-11-29 19:04:58,621 INFO L794 eck$LassoCheckResult]: Stem: 372#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~m~0, main_~n~0, main_~v1~0, main_~v2~0;havoc main_~m~0;havoc main_~n~0;havoc main_~v1~0;havoc main_~v2~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~m~0 := main_#t~nondet1;havoc main_#t~nondet1; 373#L17 assume main_~n~0 >= 0 && main_~m~0 > 0;main_~v1~0 := main_~n~0;main_~v2~0 := 0; 369#L21-2 [2020-11-29 19:04:58,621 INFO L796 eck$LassoCheckResult]: Loop: 369#L21-2 assume !!(main_~v1~0 > 0); 370#L21 assume main_~v2~0 < main_~m~0;main_~v2~0 := 1 + main_~v2~0;main_~v1~0 := main_~v1~0 - 1; 371#L21-2 assume !!(main_~v1~0 > 0); 368#L21 assume !(main_~v2~0 < main_~m~0);main_~v2~0 := 0; 369#L21-2 [2020-11-29 19:04:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:58,621 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2020-11-29 19:04:58,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:58,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188049352] [2020-11-29 19:04:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:58,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:58,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:58,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:58,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1326601, now seen corresponding path program 1 times [2020-11-29 19:04:58,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:58,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503777621] [2020-11-29 19:04:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:58,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:58,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:58,667 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:58,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:58,668 INFO L82 PathProgramCache]: Analyzing trace with hash 920229996, now seen corresponding path program 2 times [2020-11-29 19:04:58,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:04:58,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244255111] [2020-11-29 19:04:58,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:04:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:58,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:04:58,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:04:58,682 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:04:58,744 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:04:58,744 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:04:58,744 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:04:58,744 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:04:58,744 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:04:58,744 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:58,745 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:04:58,745 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:04:58,745 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2020-11-29 19:04:58,745 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:04:58,745 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:04:58,746 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:58,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:58,760 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:58,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:58,836 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:04:58,836 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:58,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:58,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:04:58,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:04:58,847 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Honda state: {ULTIMATE.start_main_~v2~0=0, ULTIMATE.start_main_~m~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:58,892 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:58,892 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:58,896 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:04:58,896 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:58,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:04:58,937 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:58,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:04:58,976 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:59,038 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:04:59,039 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:04:59,039 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:04:59,039 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:04:59,039 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:04:59,039 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:04:59,040 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:59,040 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:04:59,040 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:04:59,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c_Iteration4_Loop [2020-11-29 19:04:59,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:04:59,040 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:04:59,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:59,052 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:59,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:59,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:04:59,147 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:04:59,147 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:59,153 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 [2020-11-29 19:04:59,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:59,155 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:04:59,155 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:59,155 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:59,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:59,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:04:59,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:04:59,159 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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 [2020-11-29 19:04:59,195 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 [2020-11-29 19:04:59,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:04:59,197 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:04:59,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:04:59,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:04:59,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:04:59,198 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:04:59,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:04:59,201 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:04:59,208 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:04:59,208 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_7f4ecfde-e21e-4405-9163-1fe9f67e63eb/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) [2020-11-29 19:04:59,212 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:04:59,212 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:04:59,212 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:04:59,213 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~v1~0) = 1*ULTIMATE.start_main_~v1~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:04:59,247 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:04:59,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:04:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:04:59,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:04:59,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:04:59,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:04:59,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:04:59,323 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 [2020-11-29 19:04:59,323 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand 5 states. [2020-11-29 19:04:59,350 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand 5 states. Result 13 states and 15 transitions. Complement of second has 6 states. [2020-11-29 19:04:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:04:59,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 19:04:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-29 19:04:59,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 19:04:59,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:59,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2020-11-29 19:04:59,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:59,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 2 letters. Loop has 8 letters. [2020-11-29 19:04:59,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:04:59,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 15 transitions. [2020-11-29 19:04:59,353 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:04:59,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 0 states and 0 transitions. [2020-11-29 19:04:59,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:04:59,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:04:59,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:04:59,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:04:59,353 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:04:59,353 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:04:59,353 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:04:59,353 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 19:04:59,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:04:59,354 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:04:59,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:04:59,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:04:59 BoogieIcfgContainer [2020-11-29 19:04:59,359 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:04:59,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:04:59,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:04:59,359 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:04:59,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:04:55" (3/4) ... [2020-11-29 19:04:59,363 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:04:59,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:04:59,364 INFO L168 Benchmark]: Toolchain (without parser) took 4556.96 ms. Allocated memory was 88.1 MB in the beginning and 132.1 MB in the end (delta: 44.0 MB). Free memory was 58.2 MB in the beginning and 93.2 MB in the end (delta: -35.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,365 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 45.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:59,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.83 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 57.9 MB in the beginning and 87.8 MB in the end (delta: -29.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.92 ms. Allocated memory is still 109.1 MB. Free memory was 87.8 MB in the beginning and 86.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:59,367 INFO L168 Benchmark]: Boogie Preprocessor took 25.98 ms. Allocated memory is still 109.1 MB. Free memory was 86.5 MB in the beginning and 85.9 MB in the end (delta: 636.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:59,367 INFO L168 Benchmark]: RCFGBuilder took 262.58 ms. Allocated memory is still 109.1 MB. Free memory was 85.9 MB in the beginning and 77.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,368 INFO L168 Benchmark]: BuchiAutomizer took 3982.77 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 94.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:04:59,368 INFO L168 Benchmark]: Witness Printer took 3.66 ms. Allocated memory is still 132.1 MB. Free memory was 94.2 MB in the beginning and 93.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:04:59,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory is still 45.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 247.83 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 57.9 MB in the beginning and 87.8 MB in the end (delta: -29.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.92 ms. Allocated memory is still 109.1 MB. Free memory was 87.8 MB in the beginning and 86.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.98 ms. Allocated memory is still 109.1 MB. Free memory was 86.5 MB in the beginning and 85.9 MB in the end (delta: 636.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 262.58 ms. Allocated memory is still 109.1 MB. Free memory was 85.9 MB in the beginning and 77.3 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3982.77 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 76.7 MB in the beginning and 94.2 MB in the end (delta: -17.5 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.66 ms. Allocated memory is still 132.1 MB. Free memory was 94.2 MB in the beginning and 93.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (2 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * v2 + m and consists of 4 locations. One deterministic module has affine ranking function m + -1 * v2 and consists of 3 locations. One deterministic module has affine ranking function v1 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * v2 + m and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 5 iterations. TraceHistogramMax:3. Analysis of lassos took 3.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 45 SDtfs, 35 SDslu, 12 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf99 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...