./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex03.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_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex03.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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 4c415167dfa4b02636468ff00722dddee0c99139 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:13:20,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:20,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:20,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:20,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:20,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:20,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:20,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:20,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:20,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:20,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:20,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:20,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:20,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:20,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:20,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:20,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:20,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:20,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:20,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:20,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:20,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:20,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:20,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:20,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:20,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:20,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:20,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:20,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:20,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:20,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:20,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:20,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:20,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:20,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:20,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:20,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:20,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:20,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:20,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:20,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:20,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:13:20,521 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:20,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:20,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:20,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:20,523 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:20,524 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:13:20,524 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:13:20,527 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:13:20,528 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:13:20,528 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:13:20,528 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:13:20,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:20,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:13:20,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:20,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:20,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:13:20,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:13:20,530 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:13:20,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:20,532 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:13:20,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:20,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:13:20,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:20,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:20,534 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:13:20,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:20,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:20,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:20,535 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:13:20,537 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:13:20,538 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_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c415167dfa4b02636468ff00722dddee0c99139 [2020-11-28 03:13:20,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:20,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:20,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:20,866 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:20,867 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:20,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex03.c [2020-11-28 03:13:20,948 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/data/c65288910/174297f3f4b14ab69787337f5b412f53/FLAG7c2a9814c [2020-11-28 03:13:21,434 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:21,435 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/sv-benchmarks/c/termination-restricted-15/Ex03.c [2020-11-28 03:13:21,448 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/data/c65288910/174297f3f4b14ab69787337f5b412f53/FLAG7c2a9814c [2020-11-28 03:13:21,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/data/c65288910/174297f3f4b14ab69787337f5b412f53 [2020-11-28 03:13:21,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:21,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:21,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:21,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:21,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:21,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a9f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:21, skipping insertion in model container [2020-11-28 03:13:21,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:21" (1/1) ... [2020-11-28 03:13:21,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:21,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:21,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:21,990 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:22,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:22,029 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:22,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22 WrapperNode [2020-11-28 03:13:22,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:22,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:22,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:22,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:22,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,079 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:22,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:22,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:22,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:22,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... [2020-11-28 03:13:22,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:22,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:22,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:22,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:22,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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 [2020-11-28 03:13:22,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:22,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:22,375 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:22,376 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:13:22,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:22 BoogieIcfgContainer [2020-11-28 03:13:22,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:22,379 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:13:22,379 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:13:22,384 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:13:22,384 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:22,385 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:13:21" (1/3) ... [2020-11-28 03:13:22,387 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e13ea13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:13:22, skipping insertion in model container [2020-11-28 03:13:22,387 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:22,387 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:22" (2/3) ... [2020-11-28 03:13:22,388 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e13ea13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:13:22, skipping insertion in model container [2020-11-28 03:13:22,388 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:13:22,388 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:22" (3/3) ... [2020-11-28 03:13:22,390 INFO L373 chiAutomizerObserver]: Analyzing ICFG Ex03.c [2020-11-28 03:13:22,451 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:13:22,452 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:13:22,452 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:13:22,452 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:22,452 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:22,452 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:13:22,452 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:22,453 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:13:22,465 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 03:13:22,483 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:22,483 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:22,483 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:22,489 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:13:22,489 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:22,490 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:13:22,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-28 03:13:22,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:22,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:22,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:22,492 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:13:22,492 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:22,499 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L10-2true [2020-11-28 03:13:22,500 INFO L796 eck$LassoCheckResult]: Loop: 8#L10-2true assume !!(main_~i~0 < 0); 4#L10true assume -5 != main_~i~0;main_~i~0 := 1 + main_~i~0; 8#L10-2true [2020-11-28 03:13:22,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,506 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:13:22,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370245299] [2020-11-28 03:13:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:22,592 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:22,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:22,613 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:22,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-28 03:13:22,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802029369] [2020-11-28 03:13:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:22,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:22,631 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:22,632 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:22,635 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-28 03:13:22,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:22,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914314151] [2020-11-28 03:13:22,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:22,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:22,647 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:22,649 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:22,729 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:22,729 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:22,730 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:22,730 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:22,730 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:13:22,730 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:22,730 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:22,731 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:22,731 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex03.c_Iteration1_Loop [2020-11-28 03:13:22,731 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:22,731 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:22,751 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:22,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:22,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:23,052 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:23,055 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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) [2020-11-28 03:13:23,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:23,067 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:23,078 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:13:23,078 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_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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) [2020-11-28 03:13:23,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:23,123 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:23,131 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:13:23,132 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_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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) [2020-11-28 03:13:23,181 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:13:23,181 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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 [2020-11-28 03:13:23,230 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:13:23,230 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:13:23,269 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:13:23,271 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:13:23,271 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:13:23,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:13:23,272 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:13:23,272 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:13:23,272 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:23,272 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:13:23,272 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:13:23,272 INFO L133 ssoRankerPreferences]: Filename of dumped script: Ex03.c_Iteration1_Loop [2020-11-28 03:13:23,272 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:13:23,273 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:13:23,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:23,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:23,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:13:23,458 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:13:23,462 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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 [2020-11-28 03:13:23,467 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 [2020-11-28 03:13:23,469 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:23,470 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:23,470 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:23,470 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:23,476 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:23,476 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:13:23,482 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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) [2020-11-28 03:13:23,525 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 [2020-11-28 03:13:23,527 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:23,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:23,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:13:23,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:23,533 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:13:23,533 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 [2020-11-28 03:13:23,540 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/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) [2020-11-28 03:13:23,586 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 [2020-11-28 03:13:23,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:13:23,588 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:13:23,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:13:23,589 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:13:23,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:13:23,593 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 03:13:23,593 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:23,598 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:13:23,612 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:13:23,612 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_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:13:23,620 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:13:23,620 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:13:23,621 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:13:23,621 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-28 03:13:23,659 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:13:23,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,709 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:13:23,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:23,722 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:13:23,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:13:23,815 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:13:23,816 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-11-28 03:13:24,022 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 20 states and 28 transitions. Complement of second has 7 states. [2020-11-28 03:13:24,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-28 03:13:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:13:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-11-28 03:13:24,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-28 03:13:24,028 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:24,028 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-28 03:13:24,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:24,029 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-28 03:13:24,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:13:24,030 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2020-11-28 03:13:24,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:24,037 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2020-11-28 03:13:24,038 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:13:24,038 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-28 03:13:24,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-28 03:13:24,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:13:24,039 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-28 03:13:24,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-28 03:13:24,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-28 03:13:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-28 03:13:24,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-28 03:13:24,064 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:13:24,064 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-28 03:13:24,064 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:13:24,064 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-28 03:13:24,064 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:13:24,065 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:13:24,065 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:13:24,065 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:13:24,065 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:13:24,065 INFO L794 eck$LassoCheckResult]: Stem: 68#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 69#L10-2 assume !!(main_~i~0 < 0); 63#L10 [2020-11-28 03:13:24,065 INFO L796 eck$LassoCheckResult]: Loop: 63#L10 assume !(-5 != main_~i~0); 64#L10-2 assume !!(main_~i~0 < 0); 63#L10 [2020-11-28 03:13:24,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:24,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 03:13:24,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:24,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342321139] [2020-11-28 03:13:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:24,070 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:24,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:24,074 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:24,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:24,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-11-28 03:13:24,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:24,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094645064] [2020-11-28 03:13:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:24,081 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:24,083 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:24,084 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:24,085 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-11-28 03:13:24,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:24,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607791099] [2020-11-28 03:13:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:24,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:24,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:24,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:24,093 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:24,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:13:24 BoogieIcfgContainer [2020-11-28 03:13:24,147 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:13:24,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:24,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:24,148 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:24,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:22" (3/4) ... [2020-11-28 03:13:24,152 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 03:13:24,217 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ea599ff6-7efa-449a-a0b1-1c4cceb4ebf5/bin/uautomizer/witness.graphml [2020-11-28 03:13:24,217 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:24,227 INFO L168 Benchmark]: Toolchain (without parser) took 2416.61 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 69.5 MB in the beginning and 112.7 MB in the end (delta: -43.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,228 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 57.7 MB in the beginning and 57.6 MB in the end (delta: 34.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:24,230 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.84 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 73.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,235 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.03 ms. Allocated memory is still 94.4 MB. Free memory was 73.9 MB in the beginning and 72.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,236 INFO L168 Benchmark]: Boogie Preprocessor took 25.44 ms. Allocated memory is still 94.4 MB. Free memory was 72.4 MB in the beginning and 71.5 MB in the end (delta: 854.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:24,238 INFO L168 Benchmark]: RCFGBuilder took 271.01 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 64.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,242 INFO L168 Benchmark]: BuchiAutomizer took 1768.09 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 63.8 MB in the beginning and 65.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,243 INFO L168 Benchmark]: Witness Printer took 69.97 ms. Allocated memory is still 136.3 MB. Free memory was 65.6 MB in the beginning and 113.0 MB in the end (delta: -47.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:24,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 94.4 MB. Free memory was 57.7 MB in the beginning and 57.6 MB in the end (delta: 34.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 221.84 ms. Allocated memory is still 94.4 MB. Free memory was 69.3 MB in the beginning and 73.9 MB in the end (delta: -4.5 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.03 ms. Allocated memory is still 94.4 MB. Free memory was 73.9 MB in the beginning and 72.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.44 ms. Allocated memory is still 94.4 MB. Free memory was 72.4 MB in the beginning and 71.5 MB in the end (delta: 854.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 271.01 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 64.0 MB in the end (delta: 7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1768.09 ms. Allocated memory was 94.4 MB in the beginning and 136.3 MB in the end (delta: 41.9 MB). Free memory was 63.8 MB in the beginning and 65.6 MB in the end (delta: -1.8 MB). Peak memory consumption was 41.3 MB. Max. memory is 16.1 GB. * Witness Printer took 69.97 ms. Allocated memory is still 136.3 MB. Free memory was 65.6 MB in the beginning and 113.0 MB in the end (delta: -47.4 MB). Peak memory consumption was 3.3 MB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 5 locations. The remainder module has 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 4 SDtfs, 7 SDslu, 6 SDs, 0 SdLazy, 10 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax185 hnf107 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq175 hnf96 smp100 dnf155 smp92 tf105 neg95 sie115 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@238e2c0=0, \result=0, i=-5} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i < 0 Loop: [L10] COND FALSE !(i != -5) [L9] COND TRUE i < 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...