./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Ex05.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_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex05.c -s /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/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 8a1f32956e56edf938d274e701538e5f2c73fe0a ......................................................................................................................................................................................................................................................................... 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 20:57:15,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:57:15,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:57:15,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:57:15,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:57:15,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:57:15,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:57:15,105 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:57:15,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:57:15,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:57:15,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:57:15,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:57:15,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:57:15,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:57:15,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:57:15,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:57:15,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:57:15,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:57:15,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:57:15,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:57:15,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:57:15,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:57:15,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:57:15,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:57:15,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:57:15,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:57:15,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:57:15,154 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:57:15,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:57:15,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:57:15,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:57:15,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:57:15,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:57:15,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:57:15,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:57:15,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:57:15,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:57:15,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:57:15,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:57:15,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:57:15,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:57:15,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 20:57:15,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:57:15,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:57:15,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:57:15,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:57:15,200 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:57:15,200 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:57:15,200 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:57:15,200 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:57:15,200 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:57:15,201 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:57:15,202 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:57:15,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:57:15,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:57:15,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:57:15,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:57:15,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:57:15,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:57:15,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:57:15,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:57:15,204 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:57:15,204 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:57:15,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:57:15,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:57:15,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:57:15,205 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:57:15,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:57:15,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:57:15,206 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:57:15,206 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:57:15,207 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:57:15,207 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_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a1f32956e56edf938d274e701538e5f2c73fe0a [2020-11-29 20:57:15,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:57:15,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:57:15,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:57:15,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:57:15,540 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:57:15,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/Ex05.c [2020-11-29 20:57:15,619 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/data/70d157ed9/f4edcefa217c4fa49812ea7f13a5498c/FLAG62fd7fa1b [2020-11-29 20:57:16,095 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:57:16,096 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/sv-benchmarks/c/termination-restricted-15/Ex05.c [2020-11-29 20:57:16,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/data/70d157ed9/f4edcefa217c4fa49812ea7f13a5498c/FLAG62fd7fa1b [2020-11-29 20:57:16,477 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/data/70d157ed9/f4edcefa217c4fa49812ea7f13a5498c [2020-11-29 20:57:16,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:57:16,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:57:16,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:57:16,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:57:16,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:57:16,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695a2050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16, skipping insertion in model container [2020-11-29 20:57:16,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:57:16,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:57:16,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:57:16,652 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:57:16,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:57:16,698 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:57:16,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16 WrapperNode [2020-11-29 20:57:16,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:57:16,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:57:16,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:57:16,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:57:16,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:57:16,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:57:16,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:57:16,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:57:16,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... [2020-11-29 20:57:16,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:57:16,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:57:16,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:57:16,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:57:16,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:57:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:57:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:57:16,923 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:57:16,923 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 20:57:16,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:16 BoogieIcfgContainer [2020-11-29 20:57:16,925 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:57:16,925 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:57:16,926 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:57:16,929 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:57:16,929 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:57:16,930 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:57:16" (1/3) ... [2020-11-29 20:57:16,931 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2509d0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:57:16, skipping insertion in model container [2020-11-29 20:57:16,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:57:16,931 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:57:16" (2/3) ... [2020-11-29 20:57:16,932 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2509d0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:57:16, skipping insertion in model container [2020-11-29 20:57:16,932 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:57:16,932 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:16" (3/3) ... [2020-11-29 20:57:16,933 INFO L373 chiAutomizerObserver]: Analyzing ICFG Ex05.c [2020-11-29 20:57:16,995 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:57:16,995 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:57:16,995 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:57:16,995 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:57:16,996 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:57:16,997 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:57:16,998 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:57:16,998 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:57:17,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-29 20:57:17,026 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 20:57:17,027 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:57:17,027 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:57:17,032 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:57:17,033 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 20:57:17,033 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:57:17,033 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states. [2020-11-29 20:57:17,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-29 20:57:17,034 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:57:17,034 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:57:17,034 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:57:17,035 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 20:57:17,041 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 6#L9-2true [2020-11-29 20:57:17,042 INFO L796 eck$LassoCheckResult]: Loop: 6#L9-2true assume !!(0 != ~unnamed0~0~true); 6#L9-2true [2020-11-29 20:57:17,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:17,048 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 20:57:17,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:17,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756006516] [2020-11-29 20:57:17,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:17,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:17,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:17,142 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:17,144 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2020-11-29 20:57:17,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:17,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280578814] [2020-11-29 20:57:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:17,150 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:17,153 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:17,153 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:57:17,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-29 20:57:17,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:57:17,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545659114] [2020-11-29 20:57:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:57:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:17,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:57:17,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:57:17,167 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:57:17,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:57:17 BoogieIcfgContainer [2020-11-29 20:57:17,260 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:57:17,261 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:57:17,261 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:57:17,262 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:57:17,262 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:57:16" (3/4) ... [2020-11-29 20:57:17,266 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-29 20:57:17,323 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8a35f0ad-c39f-4542-8bc7-2b66ce1b23bd/bin/uautomizer/witness.graphml [2020-11-29 20:57:17,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:57:17,342 INFO L168 Benchmark]: Toolchain (without parser) took 843.34 ms. Allocated memory is still 119.5 MB. Free memory was 94.2 MB in the beginning and 72.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:17,343 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 86.0 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:57:17,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 214.90 ms. Allocated memory is still 119.5 MB. Free memory was 93.9 MB in the beginning and 98.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:17,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.33 ms. Allocated memory is still 119.5 MB. Free memory was 98.5 MB in the beginning and 97.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:57:17,346 INFO L168 Benchmark]: Boogie Preprocessor took 16.56 ms. Allocated memory is still 119.5 MB. Free memory was 97.4 MB in the beginning and 96.5 MB in the end (delta: 887.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:57:17,347 INFO L168 Benchmark]: RCFGBuilder took 182.46 ms. Allocated memory is still 119.5 MB. Free memory was 96.5 MB in the beginning and 89.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:17,348 INFO L168 Benchmark]: BuchiAutomizer took 334.96 ms. Allocated memory is still 119.5 MB. Free memory was 89.6 MB in the beginning and 74.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:17,349 INFO L168 Benchmark]: Witness Printer took 62.62 ms. Allocated memory is still 119.5 MB. Free memory was 74.0 MB in the beginning and 72.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:57:17,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 86.0 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 214.90 ms. Allocated memory is still 119.5 MB. Free memory was 93.9 MB in the beginning and 98.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.33 ms. Allocated memory is still 119.5 MB. Free memory was 98.5 MB in the beginning and 97.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.56 ms. Allocated memory is still 119.5 MB. Free memory was 97.4 MB in the beginning and 96.5 MB in the end (delta: 887.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 182.46 ms. Allocated memory is still 119.5 MB. Free memory was 96.5 MB in the beginning and 89.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 334.96 ms. Allocated memory is still 119.5 MB. Free memory was 89.6 MB in the beginning and 74.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 62.62 ms. Allocated memory is still 119.5 MB. Free memory was 74.0 MB in the beginning and 72.3 MB in the end (delta: 1.7 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2be32525=0, \result=0, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE \read(true) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...