./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/PastaC3.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_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/PastaC3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 d74da2e3412ebf25201dbb4db5374c4c67ab19bd ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:11:56,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:11:56,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:11:56,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:11:56,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:11:56,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:11:56,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:11:56,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:11:56,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:11:56,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:11:56,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:11:56,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:11:56,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:11:56,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:11:56,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:11:56,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:11:56,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:11:56,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:11:56,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:11:56,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:11:56,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:11:56,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:11:56,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:11:56,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:11:56,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:11:56,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:11:56,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:11:56,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:11:56,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:11:56,610 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:11:56,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:11:56,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:11:56,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:11:56,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:11:56,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:11:56,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:11:56,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:11:56,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:11:56,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:11:56,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:11:56,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:11:56,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 20:11:56,647 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:11:56,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:11:56,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:11:56,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:11:56,649 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:11:56,649 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:11:56,649 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:11:56,649 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:11:56,649 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:11:56,650 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:11:56,650 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:11:56,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:11:56,650 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:11:56,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:11:56,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:11:56,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:11:56,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:11:56,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:11:56,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:11:56,652 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:11:56,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:11:56,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:11:56,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:11:56,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:11:56,653 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:11:56,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:11:56,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:11:56,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:11:56,654 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:11:56,655 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:11:56,655 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_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d74da2e3412ebf25201dbb4db5374c4c67ab19bd [2020-11-29 20:11:56,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:11:56,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:11:56,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:11:56,977 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:11:56,978 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:11:56,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/PastaC3.c [2020-11-29 20:11:57,061 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/data/a9ae59e9b/415e4c9555504c57880fa1844c6e4a64/FLAG095d015d8 [2020-11-29 20:11:57,465 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:11:57,465 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/sv-benchmarks/c/termination-restricted-15/PastaC3.c [2020-11-29 20:11:57,471 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/data/a9ae59e9b/415e4c9555504c57880fa1844c6e4a64/FLAG095d015d8 [2020-11-29 20:11:57,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/data/a9ae59e9b/415e4c9555504c57880fa1844c6e4a64 [2020-11-29 20:11:57,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:11:57,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:11:57,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:11:57,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:11:57,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:11:57,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:11:57" (1/1) ... [2020-11-29 20:11:57,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c0044f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:57, skipping insertion in model container [2020-11-29 20:11:57,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:11:57" (1/1) ... [2020-11-29 20:11:57,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:11:57,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:11:58,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:11:58,076 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:11:58,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:11:58,100 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:11:58,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58 WrapperNode [2020-11-29 20:11:58,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:11:58,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:11:58,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:11:58,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:11:58,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:11:58,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:11:58,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:11:58,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:11:58,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... [2020-11-29 20:11:58,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:11:58,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:11:58,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:11:58,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:11:58,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:11:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:11:58,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:11:58,400 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:11:58,400 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:11:58,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:58 BoogieIcfgContainer [2020-11-29 20:11:58,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:11:58,403 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:11:58,403 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:11:58,406 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:11:58,407 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:11:58,407 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:11:57" (1/3) ... [2020-11-29 20:11:58,409 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d069b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:11:58, skipping insertion in model container [2020-11-29 20:11:58,409 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:11:58,409 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:11:58" (2/3) ... [2020-11-29 20:11:58,409 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d069b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:11:58, skipping insertion in model container [2020-11-29 20:11:58,409 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:11:58,410 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:58" (3/3) ... [2020-11-29 20:11:58,411 INFO L373 chiAutomizerObserver]: Analyzing ICFG PastaC3.c [2020-11-29 20:11:58,458 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:11:58,458 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:11:58,458 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:11:58,458 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:11:58,458 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:11:58,458 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:11:58,458 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:11:58,459 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:11:58,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 20:11:58,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:58,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:58,488 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:58,494 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:11:58,494 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:58,494 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:11:58,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2020-11-29 20:11:58,495 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:58,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:58,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:58,496 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:11:58,496 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:58,502 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L14-2true [2020-11-29 20:11:58,503 INFO L796 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(main_~x~0 < main_~y~0); 9#L14true assume main_~x~0 < main_~z~0;main_~x~0 := 1 + main_~x~0; 6#L14-2true [2020-11-29 20:11:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 20:11:58,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:58,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826523932] [2020-11-29 20:11:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:58,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:58,593 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:58,608 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:58,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:58,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2020-11-29 20:11:58,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:58,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182716682] [2020-11-29 20:11:58,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:58,622 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:58,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:58,629 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:58,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:58,631 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2020-11-29 20:11:58,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:58,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816765546] [2020-11-29 20:11:58,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:58,640 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:58,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:58,648 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:58,722 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:58,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:58,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:58,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:58,723 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:58,723 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:58,723 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:58,723 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:58,723 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaC3.c_Iteration1_Loop [2020-11-29 20:11:58,724 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:58,724 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:58,743 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 20:11:58,775 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 20:11:58,780 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 20:11:58,956 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:58,956 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:11:58,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:58,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:58,986 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:58,986 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_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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) [2020-11-29 20:11:59,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:59,014 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 [2020-11-29 20:11:59,021 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:11:59,021 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_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:11:59,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:11:59,050 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:11:59,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:11:59,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:11:59,267 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:11:59,269 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:59,269 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:59,269 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:59,269 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:59,269 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:11:59,269 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:59,270 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:59,270 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:59,270 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaC3.c_Iteration1_Loop [2020-11-29 20:11:59,270 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:59,270 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:59,272 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 20:11:59,295 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 20:11:59,314 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 20:11:59,429 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:11:59,434 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:11:59,443 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 20:11:59,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:59,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:59,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:59,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:59,452 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:59,452 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:11:59,458 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:59,487 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 20:11:59,495 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:59,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:59,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:59,496 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:59,501 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:11:59,502 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:11:59,510 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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) [2020-11-29 20:11:59,549 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 20:11:59,551 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:11:59,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:11:59,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:11:59,552 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:11:59,552 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:11:59,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:11:59,555 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 [2020-11-29 20:11:59,560 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:11:59,565 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:11:59,565 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:11:59,573 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:11:59,573 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:11:59,573 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:11:59,574 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~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 20:11:59,610 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:11:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:59,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:11:59,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:11:59,671 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:11:59,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:11:59,685 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 20:11:59,699 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 [2020-11-29 20:11:59,700 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2020-11-29 20:11:59,755 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. [2020-11-29 20:11:59,756 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 [2020-11-29 20:11:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:11:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-11-29 20:11:59,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 2 letters. [2020-11-29 20:11:59,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:59,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-29 20:11:59,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:59,761 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 1 letters. Loop has 4 letters. [2020-11-29 20:11:59,761 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:11:59,762 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2020-11-29 20:11:59,765 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:59,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2020-11-29 20:11:59,769 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 20:11:59,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-29 20:11:59,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2020-11-29 20:11:59,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:11:59,770 INFO L691 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 20:11:59,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2020-11-29 20:11:59,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2020-11-29 20:11:59,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-11-29 20:11:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2020-11-29 20:11:59,790 INFO L714 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 20:11:59,790 INFO L594 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2020-11-29 20:11:59,790 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:11:59,790 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2020-11-29 20:11:59,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:11:59,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:11:59,791 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:11:59,791 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 20:11:59,791 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:11:59,791 INFO L794 eck$LassoCheckResult]: Stem: 63#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 64#L14-2 assume !!(main_~x~0 < main_~y~0); 66#L14 [2020-11-29 20:11:59,791 INFO L796 eck$LassoCheckResult]: Loop: 66#L14 assume !(main_~x~0 < main_~z~0);main_~z~0 := 1 + main_~z~0; 65#L14-2 assume !!(main_~x~0 < main_~y~0); 66#L14 [2020-11-29 20:11:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:59,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 20:11:59,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:59,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066258133] [2020-11-29 20:11:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:59,797 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:59,800 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:59,802 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:59,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:59,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2020-11-29 20:11:59,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:59,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894881163] [2020-11-29 20:11:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:59,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:59,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:59,845 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:59,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:11:59,847 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2020-11-29 20:11:59,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:11:59,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443515649] [2020-11-29 20:11:59,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:11:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:59,856 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:11:59,867 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:11:59,874 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:11:59,919 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:11:59,919 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:11:59,920 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:11:59,920 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:11:59,920 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:11:59,920 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:11:59,920 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:11:59,920 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:11:59,920 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaC3.c_Iteration2_Loop [2020-11-29 20:11:59,920 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:11:59,921 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:11:59,922 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 20:11:59,929 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 20:11:59,953 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 20:12:00,015 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:12:00,015 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:12:00,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:12:00,029 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:12:00,029 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_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:12:00,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:12:00,073 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 [2020-11-29 20:12:00,078 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:12:00,079 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:12:00,119 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:12:00,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:12:00,399 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:12:00,401 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:12:00,401 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:12:00,401 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:12:00,401 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:12:00,402 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:12:00,402 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,402 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:12:00,402 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:12:00,402 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaC3.c_Iteration2_Loop [2020-11-29 20:12:00,402 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:12:00,402 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:12:00,404 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 20:12:00,424 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 20:12:00,428 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 20:12:00,531 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:12:00,531 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:12:00,539 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 20:12:00,541 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:12:00,541 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:12:00,541 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:12:00,541 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:12:00,547 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:12:00,549 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,553 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:12:00,593 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 20:12:00,596 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:12:00,596 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:12:00,596 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:12:00,597 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:12:00,602 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:12:00,603 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,608 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:12:00,650 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 20:12:00,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:12:00,653 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:12:00,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:12:00,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:12:00,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:12:00,655 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:12:00,655 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,658 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:12:00,661 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:12:00,661 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:12:00,668 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:12:00,668 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:12:00,668 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:12:00,669 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~x~0 - 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,702 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:12:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:00,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:12:00,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:00,740 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:12:00,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:00,814 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 20:12:00,814 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 [2020-11-29 20:12:00,815 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 20:12:00,846 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 15 states and 20 transitions. Complement of second has 5 states. [2020-11-29 20:12:00,848 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 20:12:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:12:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 20:12:00,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 20:12:00,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:12:00,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:12:00,849 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:12:00,849 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 20:12:00,850 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:12:00,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 20 transitions. [2020-11-29 20:12:00,851 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:12:00,851 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 11 states and 15 transitions. [2020-11-29 20:12:00,851 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-29 20:12:00,851 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2020-11-29 20:12:00,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2020-11-29 20:12:00,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:12:00,852 INFO L691 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-11-29 20:12:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2020-11-29 20:12:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 20:12:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:12:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2020-11-29 20:12:00,854 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-11-29 20:12:00,854 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-11-29 20:12:00,854 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:12:00,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2020-11-29 20:12:00,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 20:12:00,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:12:00,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:12:00,855 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2020-11-29 20:12:00,855 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 20:12:00,855 INFO L794 eck$LassoCheckResult]: Stem: 118#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 119#L14-2 assume !!(main_~x~0 < main_~y~0); 120#L14 assume main_~x~0 < main_~z~0;main_~x~0 := 1 + main_~x~0; 127#L14-2 assume !!(main_~x~0 < main_~y~0); 123#L14 [2020-11-29 20:12:00,855 INFO L796 eck$LassoCheckResult]: Loop: 123#L14 assume !(main_~x~0 < main_~z~0);main_~z~0 := 1 + main_~z~0; 124#L14-2 assume !!(main_~x~0 < main_~y~0); 123#L14 [2020-11-29 20:12:00,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:00,856 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2020-11-29 20:12:00,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:00,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303753] [2020-11-29 20:12:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:12:00,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:12:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:12:00,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:12:00,883 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:12:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:00,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2020-11-29 20:12:00,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:00,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306916861] [2020-11-29 20:12:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:12:00,888 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:12:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:12:00,892 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:12:00,893 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:12:00,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:00,893 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2020-11-29 20:12:00,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:12:00,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544001727] [2020-11-29 20:12:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:12:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:12:00,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:12:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:12:00,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:12:00,908 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:12:00,939 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:12:00,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:12:00,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:12:00,940 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:12:00,940 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:12:00,940 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:00,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:12:00,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:12:00,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaC3.c_Iteration3_Loop [2020-11-29 20:12:00,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:12:00,940 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:12:00,942 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 20:12:00,955 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 20:12:00,959 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 20:12:01,014 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:12:01,015 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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) [2020-11-29 20:12:01,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:12:01,023 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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) [2020-11-29 20:12:01,074 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:12:01,074 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:01,302 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:12:01,304 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:12:01,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:12:01,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:12:01,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:12:01,305 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:12:01,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:01,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:12:01,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:12:01,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: PastaC3.c_Iteration3_Loop [2020-11-29 20:12:01,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:12:01,305 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:12:01,307 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 20:12:01,344 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 20:12:01,348 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 20:12:01,400 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:12:01,400 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:01,404 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 20:12:01,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:12:01,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:12:01,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:12:01,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:12:01,406 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:12:01,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:12:01,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:12:01,414 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:12:01,417 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:12:01,418 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8c0d9ac5-851c-4445-85c4-b26a6d61a981/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 20:12:01,425 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:12:01,425 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:12:01,425 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:12:01,425 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0, ULTIMATE.start_main_~z~0) = 2*ULTIMATE.start_main_~x~0 - 2*ULTIMATE.start_main_~z~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:12:01,459 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:12:01,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:01,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:12:01,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:01,507 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:12:01,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:01,543 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 20:12:01,543 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 [2020-11-29 20:12:01,543 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 20:12:01,558 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2020-11-29 20:12:01,559 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 20:12:01,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:12:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2020-11-29 20:12:01,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:12:01,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:12:01,560 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:12:01,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:01,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:12:01,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:01,594 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:12:01,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:01,623 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 20:12:01,624 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 20:12:01,624 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 20:12:01,652 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 12 states and 17 transitions. Complement of second has 5 states. [2020-11-29 20:12:01,652 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 20:12:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:12:01,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2020-11-29 20:12:01,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:12:01,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:12:01,653 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:12:01,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:12:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:01,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:12:01,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:12:01,710 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:12:01,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:12:01,740 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 20:12:01,741 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 2 loop predicates [2020-11-29 20:12:01,741 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-29 20:12:01,754 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 17 states and 22 transitions. Complement of second has 4 states. [2020-11-29 20:12:01,756 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 20:12:01,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:12:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-29 20:12:01,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:12:01,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:12:01,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2020-11-29 20:12:01,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:12:01,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2020-11-29 20:12:01,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:12:01,758 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 22 transitions. [2020-11-29 20:12:01,759 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:12:01,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 0 states and 0 transitions. [2020-11-29 20:12:01,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 20:12:01,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 20:12:01,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 20:12:01,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:12:01,760 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:12:01,760 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:12:01,760 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:12:01,760 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:12:01,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:12:01,761 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:12:01,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 20:12:01,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:12:01 BoogieIcfgContainer [2020-11-29 20:12:01,766 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:12:01,766 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:12:01,766 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:12:01,767 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:12:01,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:11:58" (3/4) ... [2020-11-29 20:12:01,770 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:12:01,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:12:01,772 INFO L168 Benchmark]: Toolchain (without parser) took 3892.43 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 55.6 MB in the beginning and 79.6 MB in the end (delta: -24.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:01,772 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 58.8 MB in the beginning and 58.7 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:01,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.51 ms. Allocated memory is still 88.1 MB. Free memory was 55.4 MB in the beginning and 67.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:01,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.29 ms. Allocated memory is still 88.1 MB. Free memory was 67.1 MB in the beginning and 65.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:01,774 INFO L168 Benchmark]: Boogie Preprocessor took 21.32 ms. Allocated memory is still 88.1 MB. Free memory was 65.9 MB in the beginning and 65.0 MB in the end (delta: 930.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:01,775 INFO L168 Benchmark]: RCFGBuilder took 236.52 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 57.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:12:01,775 INFO L168 Benchmark]: BuchiAutomizer took 3363.08 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.0 MB in the beginning and 79.6 MB in the end (delta: -22.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:01,776 INFO L168 Benchmark]: Witness Printer took 3.66 ms. Allocated memory is still 107.0 MB. Free memory is still 79.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:12:01,779 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 was 58.8 MB in the beginning and 58.7 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 221.51 ms. Allocated memory is still 88.1 MB. Free memory was 55.4 MB in the beginning and 67.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.29 ms. Allocated memory is still 88.1 MB. Free memory was 67.1 MB in the beginning and 65.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.32 ms. Allocated memory is still 88.1 MB. Free memory was 65.9 MB in the beginning and 65.0 MB in the end (delta: 930.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 236.52 ms. Allocated memory is still 88.1 MB. Free memory was 65.0 MB in the beginning and 57.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3363.08 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 57.0 MB in the beginning and 79.6 MB in the end (delta: -22.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.66 ms. Allocated memory is still 107.0 MB. Free memory is still 79.6 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 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function -1 * x + y and consists of 5 locations. One deterministic module has affine ranking function 2 * x + -2 * z + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * x + -2 * z + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.6s. 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 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 14 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax187 hnf97 lsp51 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie113 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 23ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...