./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/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 32bit --witnessprinter.graph.data.programhash 62c8372256c861b4f8257978673ab17e2a1f1b99 ............................................................................................................................................................................................................................................................................................... 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 [2020-11-30 00:12:27,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:12:27,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:12:27,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:12:27,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:12:27,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:12:27,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:12:27,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:12:27,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:12:27,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:12:27,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:12:27,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:12:27,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:12:27,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:12:27,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:12:27,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:12:27,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:12:27,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:12:27,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:12:27,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:12:27,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:12:27,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:12:27,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:12:27,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:12:27,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:12:27,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:12:27,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:12:27,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:12:27,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:12:27,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:12:27,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:12:27,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:12:27,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:12:27,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:12:27,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:12:27,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:12:27,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:12:27,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:12:27,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:12:27,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:12:27,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:12:27,291 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-30 00:12:27,332 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:12:27,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:12:27,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:12:27,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:12:27,335 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:12:27,335 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-30 00:12:27,336 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-30 00:12:27,336 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-30 00:12:27,336 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-30 00:12:27,336 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-30 00:12:27,337 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-30 00:12:27,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:12:27,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:12:27,337 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 00:12:27,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:12:27,338 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:12:27,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:12:27,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-30 00:12:27,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-30 00:12:27,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-30 00:12:27,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:12:27,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:12:27,340 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-30 00:12:27,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:12:27,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-30 00:12:27,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:12:27,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:12:27,341 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-30 00:12:27,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:12:27,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:12:27,342 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:12:27,342 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-30 00:12:27,344 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-30 00:12:27,344 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_014a6f02-f197-46ed-beb2-e83c1fe148b2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62c8372256c861b4f8257978673ab17e2a1f1b99 [2020-11-30 00:12:27,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:12:27,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:12:27,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:12:27,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:12:27,789 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:12:27,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2020-11-30 00:12:27,893 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/data/f6a43dd9d/3c537f76364940e18dac2fa2597a6930/FLAG3e856d8cd [2020-11-30 00:12:28,612 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:12:28,613 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2020-11-30 00:12:28,626 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/data/f6a43dd9d/3c537f76364940e18dac2fa2597a6930/FLAG3e856d8cd [2020-11-30 00:12:28,955 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/data/f6a43dd9d/3c537f76364940e18dac2fa2597a6930 [2020-11-30 00:12:28,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:12:28,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:12:28,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:28,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:12:28,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:12:28,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:28,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a4aae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:28, skipping insertion in model container [2020-11-30 00:12:28,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:12:28" (1/1) ... [2020-11-30 00:12:28,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:12:29,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:12:29,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:29,313 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:12:29,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:12:29,367 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:12:29,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29 WrapperNode [2020-11-30 00:12:29,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:12:29,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:29,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:12:29,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:12:29,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:12:29,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:12:29,420 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:12:29,420 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:12:29,430 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... [2020-11-30 00:12:29,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:12:29,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:12:29,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:12:29,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:12:29,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/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 [2020-11-30 00:12:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:12:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:12:29,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:12:29,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:12:29,978 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:12:29,979 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-30 00:12:29,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:29 BoogieIcfgContainer [2020-11-30 00:12:29,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:12:29,984 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-30 00:12:29,984 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-30 00:12:29,988 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-30 00:12:29,990 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:12:29,990 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 30.11 12:12:28" (1/3) ... [2020-11-30 00:12:29,992 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40fc9ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:12:29, skipping insertion in model container [2020-11-30 00:12:29,992 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:12:29,992 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:12:29" (2/3) ... [2020-11-30 00:12:29,993 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@40fc9ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 30.11 12:12:29, skipping insertion in model container [2020-11-30 00:12:29,993 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-30 00:12:29,993 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:29" (3/3) ... [2020-11-30 00:12:29,997 INFO L373 chiAutomizerObserver]: Analyzing ICFG phases_2-1.c [2020-11-30 00:12:30,082 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-30 00:12:30,083 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-30 00:12:30,083 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-30 00:12:30,083 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:12:30,083 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:12:30,084 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-30 00:12:30,084 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:12:30,084 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-30 00:12:30,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-11-30 00:12:30,125 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:12:30,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:12:30,126 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:12:30,133 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:12:30,133 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:12:30,133 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-30 00:12:30,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-11-30 00:12:30,137 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-30 00:12:30,137 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-30 00:12:30,138 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-30 00:12:30,138 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-30 00:12:30,138 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-30 00:12:30,148 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~x~0, main_~y~0;main_~x~0 := 1;main_~y~0 := main_#t~nondet7;havoc main_#t~nondet7; 4#L21true assume !!(main_~y~0 % 4294967296 > 0); 8#L24-2true [2020-11-30 00:12:30,149 INFO L796 eck$LassoCheckResult]: Loop: 8#L24-2true assume !!(main_~x~0 % 4294967296 < main_~y~0 % 4294967296); 11#L24true assume main_~x~0 % 4294967296 < (if main_~y~0 % 4294967296 < 0 && 0 != main_~y~0 % 4294967296 % (main_~x~0 % 4294967296) then (if main_~x~0 % 4294967296 < 0 then main_~y~0 % 4294967296 / (main_~x~0 % 4294967296) - 1 else 1 + main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) else main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) % 4294967296;main_~x~0 := main_~x~0 * main_~x~0; 8#L24-2true [2020-11-30 00:12:30,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:30,157 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2020-11-30 00:12:30,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:30,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517505749] [2020-11-30 00:12:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:30,319 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:30,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:30,367 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:30,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:30,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2020-11-30 00:12:30,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:30,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496137888] [2020-11-30 00:12:30,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:30,380 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:12:30,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068438915] [2020-11-30 00:12:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:30,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:30,536 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:30,550 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:12:30,554 INFO L82 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2020-11-30 00:12:30,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:12:30,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338847309] [2020-11-30 00:12:30,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:12:30,584 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:12:30,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250366891] [2020-11-30 00:12:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:12:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:30,666 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:12:30,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:12:30,690 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:12:31,289 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-11-30 00:12:31,481 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-11-30 00:12:31,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 30.11 12:12:31 BoogieIcfgContainer [2020-11-30 00:12:31,509 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-30 00:12:31,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:12:31,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:12:31,510 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:12:31,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:12:29" (3/4) ... [2020-11-30 00:12:31,514 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-30 00:12:31,555 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_014a6f02-f197-46ed-beb2-e83c1fe148b2/bin/uautomizer/witness.graphml [2020-11-30 00:12:31,555 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:12:31,557 INFO L168 Benchmark]: Toolchain (without parser) took 2593.03 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 74.0 MB in the beginning and 82.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,558 INFO L168 Benchmark]: CDTParser took 1.07 ms. Allocated memory is still 100.7 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:31,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.81 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 78.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.81 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:12:31,560 INFO L168 Benchmark]: Boogie Preprocessor took 49.45 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 75.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,561 INFO L168 Benchmark]: RCFGBuilder took 513.50 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 64.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,562 INFO L168 Benchmark]: BuchiAutomizer took 1524.88 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 64.3 MB in the beginning and 84.6 MB in the end (delta: -20.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,563 INFO L168 Benchmark]: Witness Printer took 45.82 ms. Allocated memory is still 146.8 MB. Free memory was 84.6 MB in the beginning and 82.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:12:31,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07 ms. Allocated memory is still 100.7 MB. Free memory is still 58.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 404.81 ms. Allocated memory is still 100.7 MB. Free memory was 73.8 MB in the beginning and 78.0 MB in the end (delta: -4.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.81 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.45 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 75.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 513.50 ms. Allocated memory is still 100.7 MB. Free memory was 75.5 MB in the beginning and 64.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1524.88 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 64.3 MB in the beginning and 84.6 MB in the end (delta: -20.3 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 45.82 ms. Allocated memory is still 146.8 MB. Free memory was 84.6 MB in the beginning and 82.5 MB in the end (delta: 2.0 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=4, NULL=0, \result=0, NULL=2, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7faeb379=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7b0e1715=0, NULL=0, x=1, y=4294967298, NULL=3} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...