./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_04.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_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_04.c -s /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/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 8d3fb7268073fcc251f9902f5b4913f30f169781 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:41:35,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:41:35,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:41:35,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:41:35,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:41:35,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:41:35,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:41:35,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:41:35,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:41:35,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:41:35,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:41:35,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:41:35,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:41:35,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:41:35,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:41:35,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:41:35,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:41:35,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:41:35,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:41:35,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:41:35,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:41:35,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:41:35,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:41:35,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:41:35,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:41:35,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:41:35,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:41:35,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:41:35,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:41:35,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:41:35,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:41:35,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:41:35,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:41:35,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:41:35,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:41:35,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:41:35,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:41:35,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:41:35,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:41:35,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:41:35,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:41:35,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 22:41:35,378 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:41:35,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:41:35,380 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:41:35,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:41:35,380 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:41:35,380 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 22:41:35,381 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 22:41:35,381 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 22:41:35,381 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 22:41:35,381 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 22:41:35,381 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 22:41:35,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:41:35,382 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 22:41:35,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:41:35,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:41:35,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 22:41:35,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 22:41:35,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 22:41:35,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:41:35,383 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 22:41:35,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:41:35,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 22:41:35,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:41:35,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:41:35,384 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 22:41:35,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:41:35,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:41:35,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:41:35,385 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 22:41:35,386 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 22:41:35,386 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_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d3fb7268073fcc251f9902f5b4913f30f169781 [2020-11-29 22:41:35,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:41:35,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:41:35,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:41:35,654 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:41:35,655 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:41:35,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/NO_04.c [2020-11-29 22:41:35,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/data/0e1204a29/b1c1a9257f0a449db82b0c0daa3f107e/FLAG62aecd392 [2020-11-29 22:41:36,223 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:41:36,224 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/sv-benchmarks/c/termination-restricted-15/NO_04.c [2020-11-29 22:41:36,235 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/data/0e1204a29/b1c1a9257f0a449db82b0c0daa3f107e/FLAG62aecd392 [2020-11-29 22:41:36,619 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/data/0e1204a29/b1c1a9257f0a449db82b0c0daa3f107e [2020-11-29 22:41:36,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:41:36,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:41:36,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:41:36,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:41:36,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:41:36,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@764e524c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36, skipping insertion in model container [2020-11-29 22:41:36,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:41:36,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:41:36,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:41:36,804 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:41:36,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:41:36,841 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:41:36,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36 WrapperNode [2020-11-29 22:41:36,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:41:36,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:41:36,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:41:36,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:41:36,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:41:36,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:41:36,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:41:36,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:41:36,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... [2020-11-29 22:41:36,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:41:36,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:41:36,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:41:36,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:41:36,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/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 22:41:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:41:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:41:37,116 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:41:37,117 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 22:41:37,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:41:37 BoogieIcfgContainer [2020-11-29 22:41:37,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:41:37,120 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 22:41:37,120 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 22:41:37,127 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 22:41:37,129 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:41:37,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 10:41:36" (1/3) ... [2020-11-29 22:41:37,130 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f45d673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:41:37, skipping insertion in model container [2020-11-29 22:41:37,130 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:41:37,131 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:41:36" (2/3) ... [2020-11-29 22:41:37,132 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2f45d673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 10:41:37, skipping insertion in model container [2020-11-29 22:41:37,132 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 22:41:37,132 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:41:37" (3/3) ... [2020-11-29 22:41:37,133 INFO L373 chiAutomizerObserver]: Analyzing ICFG NO_04.c [2020-11-29 22:41:37,189 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 22:41:37,189 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 22:41:37,189 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 22:41:37,190 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:41:37,190 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:41:37,190 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 22:41:37,190 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:41:37,190 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 22:41:37,202 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-11-29 22:41:37,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-29 22:41:37,218 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:37,218 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:37,226 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:41:37,226 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:41:37,227 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 22:41:37,227 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2020-11-29 22:41:37,228 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2020-11-29 22:41:37,228 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:37,228 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:37,229 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:41:37,229 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 22:41:37,234 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 15#L15-2true [2020-11-29 22:41:37,234 INFO L796 eck$LassoCheckResult]: Loop: 15#L15-2true assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 5#L18-2true assume !(main_~j~0 < main_~a~0); 3#L18-3true main_~i~0 := 1 + main_~i~0; 15#L15-2true [2020-11-29 22:41:37,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:37,241 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 22:41:37,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:37,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82509739] [2020-11-29 22:41:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:37,313 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:37,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:37,331 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:37,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:37,333 INFO L82 PathProgramCache]: Analyzing trace with hash 39990, now seen corresponding path program 1 times [2020-11-29 22:41:37,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:37,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624995426] [2020-11-29 22:41:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:37,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:37,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:37,354 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:37,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:37,356 INFO L82 PathProgramCache]: Analyzing trace with hash 963511, now seen corresponding path program 1 times [2020-11-29 22:41:37,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:37,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073514204] [2020-11-29 22:41:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:37,541 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 22:41:37,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073514204] [2020-11-29 22:41:37,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:37,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:41:37,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556973299] [2020-11-29 22:41:37,704 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2020-11-29 22:41:37,739 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:41:37,739 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:41:37,739 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:41:37,740 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:41:37,740 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 22:41:37,740 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:37,740 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:41:37,741 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:41:37,741 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2020-11-29 22:41:37,741 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:41:37,741 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:41:37,764 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 22:41:37,773 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 22:41:37,779 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 22:41:37,889 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:41:37,889 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:41:37,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:41:37,900 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:37,909 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:41:37,910 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_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/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 22:41:37,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:41:37,972 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 22:41:37,978 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 22:41:37,978 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_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:41:38,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 22:41:38,020 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/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) [2020-11-29 22:41:38,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 22:41:38,067 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:38,446 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 22:41:38,448 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 22:41:38,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 22:41:38,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 22:41:38,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 22:41:38,448 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 22:41:38,448 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:38,449 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 22:41:38,449 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 22:41:38,449 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_04.c_Iteration1_Loop [2020-11-29 22:41:38,449 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 22:41:38,449 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 22:41:38,451 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 22:41:38,463 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 22:41:38,470 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 22:41:38,575 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 22:41:38,580 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/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) [2020-11-29 22:41:38,588 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 22:41:38,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:38,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:38,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:38,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:38,600 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:38,600 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 22:41:38,608 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 22:41:38,650 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 22:41:38,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:38,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:38,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:38,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:38,657 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 22:41:38,658 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:38,666 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/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 22:41:38,707 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 22:41:38,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 22:41:38,710 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 22:41:38,710 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 22:41:38,710 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 22:41:38,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 22:41:38,718 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 22:41:38,719 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 22:41:38,724 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 22:41:38,728 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 22:41:38,729 INFO L444 ModelExtractionUtils]: 3 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_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 22:41:38,750 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 22:41:38,750 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 22:41:38,751 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 22:41:38,751 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-29 22:41:38,788 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 22:41:38,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:38,829 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 22:41:38,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:41:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:38,841 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 22:41:38,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:41:38,917 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 22:41:38,934 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 22:41:38,935 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 4 states. [2020-11-29 22:41:39,082 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 4 states. Result 60 states and 102 transitions. Complement of second has 9 states. [2020-11-29 22:41:39,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-29 22:41:39,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 22:41:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2020-11-29 22:41:39,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 22:41:39,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:41:39,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 22:41:39,091 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:41:39,091 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 64 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 22:41:39,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 22:41:39,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 102 transitions. [2020-11-29 22:41:39,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-11-29 22:41:39,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 37 states and 54 transitions. [2020-11-29 22:41:39,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-11-29 22:41:39,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-11-29 22:41:39,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 54 transitions. [2020-11-29 22:41:39,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 22:41:39,114 INFO L691 BuchiCegarLoop]: Abstraction has 37 states and 54 transitions. [2020-11-29 22:41:39,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 54 transitions. [2020-11-29 22:41:39,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24. [2020-11-29 22:41:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 22:41:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2020-11-29 22:41:39,144 INFO L714 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2020-11-29 22:41:39,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:39,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:41:39,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:41:39,153 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand 4 states. [2020-11-29 22:41:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:39,263 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2020-11-29 22:41:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:41:39,265 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 49 transitions. [2020-11-29 22:41:39,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2020-11-29 22:41:39,267 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 18 states and 25 transitions. [2020-11-29 22:41:39,268 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-11-29 22:41:39,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2020-11-29 22:41:39,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 25 transitions. [2020-11-29 22:41:39,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:41:39,268 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-11-29 22:41:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 25 transitions. [2020-11-29 22:41:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 11. [2020-11-29 22:41:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 22:41:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2020-11-29 22:41:39,270 INFO L714 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-11-29 22:41:39,270 INFO L594 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2020-11-29 22:41:39,270 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 22:41:39,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2020-11-29 22:41:39,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2020-11-29 22:41:39,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:39,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:39,272 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:41:39,272 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2020-11-29 22:41:39,272 INFO L794 eck$LassoCheckResult]: Stem: 185#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 181#L15-2 [2020-11-29 22:41:39,272 INFO L796 eck$LassoCheckResult]: Loop: 181#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 186#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 187#L20-2 assume !(main_~k~0 >= 0); 189#L20-3 main_~j~0 := 1 + main_~j~0; 190#L18-2 assume !(main_~j~0 < main_~a~0); 180#L18-3 main_~i~0 := 1 + main_~i~0; 181#L15-2 [2020-11-29 22:41:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,273 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2020-11-29 22:41:39,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534765460] [2020-11-29 22:41:39,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,282 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,286 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,288 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1192172983, now seen corresponding path program 1 times [2020-11-29 22:41:39,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166334191] [2020-11-29 22:41:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:39,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166334191] [2020-11-29 22:41:39,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:39,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 22:41:39,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990352301] [2020-11-29 22:41:39,329 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:41:39,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:39,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:41:39,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:41:39,330 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-29 22:41:39,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:39,388 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2020-11-29 22:41:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:41:39,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 23 transitions. [2020-11-29 22:41:39,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2020-11-29 22:41:39,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 17 states and 23 transitions. [2020-11-29 22:41:39,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-29 22:41:39,390 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-29 22:41:39,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 23 transitions. [2020-11-29 22:41:39,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:41:39,391 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2020-11-29 22:41:39,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 23 transitions. [2020-11-29 22:41:39,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 12. [2020-11-29 22:41:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 22:41:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2020-11-29 22:41:39,393 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-29 22:41:39,393 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2020-11-29 22:41:39,393 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 22:41:39,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2020-11-29 22:41:39,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2020-11-29 22:41:39,394 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:39,394 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:39,394 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:41:39,394 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:39,394 INFO L794 eck$LassoCheckResult]: Stem: 222#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 218#L15-2 [2020-11-29 22:41:39,395 INFO L796 eck$LassoCheckResult]: Loop: 218#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 223#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 224#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 219#L23-2 assume !(main_~l~0 < main_~b~0); 220#L23-3 main_~k~0 := main_~k~0 - 1; 228#L20-2 assume !(main_~k~0 >= 0); 226#L20-3 main_~j~0 := 1 + main_~j~0; 227#L18-2 assume !(main_~j~0 < main_~a~0); 217#L18-3 main_~i~0 := 1 + main_~i~0; 218#L15-2 [2020-11-29 22:41:39,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,395 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2020-11-29 22:41:39,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109123678] [2020-11-29 22:41:39,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,402 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,406 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,407 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:39,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2090456946, now seen corresponding path program 1 times [2020-11-29 22:41:39,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579092315] [2020-11-29 22:41:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:39,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579092315] [2020-11-29 22:41:39,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:39,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 22:41:39,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771655093] [2020-11-29 22:41:39,481 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:41:39,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 22:41:39,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 22:41:39,482 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. cyclomatic complexity: 5 Second operand 4 states. [2020-11-29 22:41:39,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:39,535 INFO L93 Difference]: Finished difference Result 14 states and 18 transitions. [2020-11-29 22:41:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 22:41:39,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 18 transitions. [2020-11-29 22:41:39,536 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-11-29 22:41:39,537 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 18 transitions. [2020-11-29 22:41:39,537 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-29 22:41:39,537 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-29 22:41:39,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 18 transitions. [2020-11-29 22:41:39,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:41:39,537 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 18 transitions. [2020-11-29 22:41:39,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 18 transitions. [2020-11-29 22:41:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-29 22:41:39,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 22:41:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2020-11-29 22:41:39,539 INFO L714 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-29 22:41:39,539 INFO L594 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2020-11-29 22:41:39,539 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 22:41:39,539 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2020-11-29 22:41:39,540 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2020-11-29 22:41:39,540 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:39,540 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:39,541 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 22:41:39,541 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:39,541 INFO L794 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 253#L15-2 [2020-11-29 22:41:39,541 INFO L796 eck$LassoCheckResult]: Loop: 253#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 257#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 258#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 254#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 255#L25-2 assume !(main_~m~0 >= 0); 259#L25-3 main_~l~0 := 1 + main_~l~0; 260#L23-2 assume !(main_~l~0 < main_~b~0); 263#L23-3 main_~k~0 := main_~k~0 - 1; 264#L20-2 assume !(main_~k~0 >= 0); 261#L20-3 main_~j~0 := 1 + main_~j~0; 262#L18-2 assume !(main_~j~0 < main_~a~0); 252#L18-3 main_~i~0 := 1 + main_~i~0; 253#L15-2 [2020-11-29 22:41:39,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,542 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2020-11-29 22:41:39,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902999213] [2020-11-29 22:41:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,545 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,555 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,556 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:39,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,557 INFO L82 PathProgramCache]: Analyzing trace with hash -591153991, now seen corresponding path program 1 times [2020-11-29 22:41:39,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103150257] [2020-11-29 22:41:39,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:41:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:41:39,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103150257] [2020-11-29 22:41:39,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:41:39,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 22:41:39,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620778901] [2020-11-29 22:41:39,611 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 22:41:39,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 22:41:39,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:41:39,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:41:39,612 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. cyclomatic complexity: 5 Second operand 5 states. [2020-11-29 22:41:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:39,664 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2020-11-29 22:41:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:41:39,665 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 6 transitions. [2020-11-29 22:41:39,665 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 22:41:39,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 6 transitions. [2020-11-29 22:41:39,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-29 22:41:39,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 22:41:39,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2020-11-29 22:41:39,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 22:41:39,666 INFO L691 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-29 22:41:39,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2020-11-29 22:41:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2020-11-29 22:41:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-11-29 22:41:39,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2020-11-29 22:41:39,667 INFO L714 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-29 22:41:39,667 INFO L594 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2020-11-29 22:41:39,667 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 22:41:39,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2020-11-29 22:41:39,668 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 22:41:39,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 22:41:39,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 22:41:39,668 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 22:41:39,668 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 22:41:39,669 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~k~0, main_~l~0, main_~m~0, main_~a~0, main_~b~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~l~0;havoc main_~m~0;havoc main_~a~0;havoc main_~b~0;main_~i~0 := 0; 286#L15-2 assume !!(main_~i~0 < 100);main_~a~0 := 2 + main_~i~0;main_~j~0 := 0; 287#L18-2 assume !!(main_~j~0 < main_~a~0);main_~k~0 := 3 + (main_~i~0 + main_~j~0); 288#L20-2 assume !!(main_~k~0 >= 0);main_~b~0 := 4 + (main_~i~0 + main_~j~0 + main_~k~0);main_~l~0 := 0; 283#L23-2 assume !!(main_~l~0 < main_~b~0);main_~m~0 := 1000 + (main_~i~0 + main_~j~0 + main_~k~0 + main_~l~0); 284#L25-2 [2020-11-29 22:41:39,669 INFO L796 eck$LassoCheckResult]: Loop: 284#L25-2 assume !!(main_~m~0 >= 0);main_~m~0 := main_~m~0 - 0; 284#L25-2 [2020-11-29 22:41:39,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,669 INFO L82 PathProgramCache]: Analyzing trace with hash 29869746, now seen corresponding path program 1 times [2020-11-29 22:41:39,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458174780] [2020-11-29 22:41:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,677 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,683 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,685 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:39,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,686 INFO L82 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 1 times [2020-11-29 22:41:39,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725653776] [2020-11-29 22:41:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,691 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,692 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:39,693 INFO L82 PathProgramCache]: Analyzing trace with hash 925962172, now seen corresponding path program 1 times [2020-11-29 22:41:39,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:41:39,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523725701] [2020-11-29 22:41:39,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:41:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,700 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:41:39,706 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:41:39,708 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:41:39,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 10:41:39 BoogieIcfgContainer [2020-11-29 22:41:39,841 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 22:41:39,842 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:41:39,842 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:41:39,842 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:41:39,843 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:41:37" (3/4) ... [2020-11-29 22:41:39,846 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 22:41:39,883 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_45c876c6-29ec-4d2f-a3f7-88b5909aadbe/bin/uautomizer/witness.graphml [2020-11-29 22:41:39,892 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:41:39,893 INFO L168 Benchmark]: Toolchain (without parser) took 3270.79 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 71.5 MB in the beginning and 101.3 MB in the end (delta: -29.8 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:39,894 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 35.4 MB in the beginning and 35.3 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:41:39,895 INFO L168 Benchmark]: CACSL2BoogieTranslator took 218.27 ms. Allocated memory is still 100.7 MB. Free memory was 71.5 MB in the beginning and 79.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:39,895 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.79 ms. Allocated memory is still 100.7 MB. Free memory was 79.9 MB in the beginning and 78.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:41:39,896 INFO L168 Benchmark]: Boogie Preprocessor took 16.82 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 77.8 MB in the end (delta: 478.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:41:39,896 INFO L168 Benchmark]: RCFGBuilder took 226.88 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 67.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:39,897 INFO L168 Benchmark]: BuchiAutomizer took 2722.06 ms. Allocated memory is still 100.7 MB. Free memory was 67.8 MB in the beginning and 34.2 MB in the end (delta: 33.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:39,898 INFO L168 Benchmark]: Witness Printer took 50.26 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 34.2 MB in the beginning and 101.3 MB in the end (delta: -67.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:41:39,901 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 77.6 MB. Free memory was 35.4 MB in the beginning and 35.3 MB in the end (delta: 35.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 218.27 ms. Allocated memory is still 100.7 MB. Free memory was 71.5 MB in the beginning and 79.9 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.79 ms. Allocated memory is still 100.7 MB. Free memory was 79.9 MB in the beginning and 78.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.82 ms. Allocated memory is still 100.7 MB. Free memory was 78.2 MB in the beginning and 77.8 MB in the end (delta: 478.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 226.88 ms. Allocated memory is still 100.7 MB. Free memory was 77.2 MB in the beginning and 67.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2722.06 ms. Allocated memory is still 100.7 MB. Free memory was 67.8 MB in the beginning and 34.2 MB in the end (delta: 33.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 16.1 GB. * Witness Printer took 50.26 ms. Allocated memory was 100.7 MB in the beginning and 123.7 MB in the end (delta: 23.1 MB). Free memory was 34.2 MB in the beginning and 101.3 MB in the end (delta: -67.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (4 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 5 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 13 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 34 SDtfs, 91 SDslu, 43 SDs, 0 SdLazy, 94 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT0 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf96 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq188 hnf91 smp100 dnf100 smp100 tf106 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 25]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {a=2, \result=0, b=7, m=1003, l=0, i=0, k=3, j=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 25]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int k; [L9] int l; [L10] int m; [L11] int a; [L12] int b; [L13] i = 0 [L15] COND TRUE i < 100 [L16] a = i+2 [L17] j = 0 [L18] COND TRUE j < a [L19] k = i+j+3 [L20] COND TRUE k >= 0 [L21] b = i+j+k+4 [L22] l = 0 [L23] COND TRUE l < b [L24] m = i+j+k+l+1000 Loop: [L25] COND TRUE m >= 0 [L26] m = m-0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...