./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/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 f19bc75dcbe901d738916f7ca817c5a4f2f97f97 .................................................................................................................................................................................................................................................................................... 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 0.2.0-69874e2 [2020-12-01 14:55:20,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:55:20,647 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:55:20,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:55:20,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:55:20,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:55:20,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:55:20,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:55:20,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:55:20,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:55:20,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:55:20,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:55:20,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:55:20,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:55:20,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:55:20,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:55:20,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:55:20,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:55:20,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:55:20,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:55:20,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:55:20,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:55:20,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:55:20,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:55:20,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:55:20,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:55:20,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:55:20,787 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:55:20,788 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:55:20,789 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:55:20,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:55:20,791 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:55:20,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:55:20,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:55:20,795 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:55:20,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:55:20,796 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:55:20,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:55:20,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:55:20,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:55:20,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:55:20,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-12-01 14:55:20,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:55:20,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:55:20,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:55:20,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:55:20,848 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:55:20,848 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-12-01 14:55:20,848 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-12-01 14:55:20,849 INFO L138 SettingsManager]: * Use old map elimination=false [2020-12-01 14:55:20,849 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-12-01 14:55:20,849 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-12-01 14:55:20,850 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-12-01 14:55:20,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:55:20,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-01 14:55:20,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:55:20,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:55:20,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-12-01 14:55:20,851 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-12-01 14:55:20,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-12-01 14:55:20,852 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:55:20,852 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-12-01 14:55:20,852 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:55:20,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-12-01 14:55:20,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:55:20,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:55:20,853 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-12-01 14:55:20,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:55:20,854 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:55:20,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:55:20,854 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-12-01 14:55:20,857 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-12-01 14:55:20,857 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_3a6e27e1-cde7-4451-9d67-2b73412aeb47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f19bc75dcbe901d738916f7ca817c5a4f2f97f97 [2020-12-01 14:55:21,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:55:21,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:55:21,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:55:21,193 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:55:21,194 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:55:21,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD2.c [2020-12-01 14:55:21,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/data/2ad292bae/d1a4e01b8cb342159e4969f0ac150b1c/FLAG7cd5358fd [2020-12-01 14:55:21,778 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:55:21,779 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/sv-benchmarks/c/termination-restricted-15/GCD2.c [2020-12-01 14:55:21,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/data/2ad292bae/d1a4e01b8cb342159e4969f0ac150b1c/FLAG7cd5358fd [2020-12-01 14:55:22,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/data/2ad292bae/d1a4e01b8cb342159e4969f0ac150b1c [2020-12-01 14:55:22,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:55:22,151 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:55:22,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:55:22,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:55:22,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:55:22,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62d31bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22, skipping insertion in model container [2020-12-01 14:55:22,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:55:22,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:55:22,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:55:22,379 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:55:22,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:55:22,409 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:55:22,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22 WrapperNode [2020-12-01 14:55:22,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:55:22,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:55:22,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:55:22,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:55:22,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:55:22,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:55:22,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:55:22,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:55:22,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... [2020-12-01 14:55:22,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:55:22,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:55:22,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:55:22,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:55:22,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/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 [2020-12-01 14:55:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:55:22,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:55:22,750 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:55:22,751 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-01 14:55:22,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:55:22 BoogieIcfgContainer [2020-12-01 14:55:22,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:55:22,754 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-12-01 14:55:22,754 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-12-01 14:55:22,758 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-12-01 14:55:22,758 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:55:22,759 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 02:55:22" (1/3) ... [2020-12-01 14:55:22,760 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c5cf883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:55:22, skipping insertion in model container [2020-12-01 14:55:22,760 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:55:22,760 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:55:22" (2/3) ... [2020-12-01 14:55:22,761 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5c5cf883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 02:55:22, skipping insertion in model container [2020-12-01 14:55:22,761 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-12-01 14:55:22,761 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:55:22" (3/3) ... [2020-12-01 14:55:22,762 INFO L389 chiAutomizerObserver]: Analyzing ICFG GCD2.c [2020-12-01 14:55:22,842 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-12-01 14:55:22,843 INFO L360 BuchiCegarLoop]: Hoare is false [2020-12-01 14:55:22,843 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-12-01 14:55:22,843 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:55:22,843 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:55:22,843 INFO L364 BuchiCegarLoop]: Difference is false [2020-12-01 14:55:22,844 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:55:22,844 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-12-01 14:55:22,856 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-12-01 14:55:22,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-12-01 14:55:22,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:55:22,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:55:22,881 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 14:55:22,881 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 14:55:22,881 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-12-01 14:55:22,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-12-01 14:55:22,883 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-12-01 14:55:22,883 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-12-01 14:55:22,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-12-01 14:55:22,884 INFO L853 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-12-01 14:55:22,884 INFO L854 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-12-01 14:55:22,890 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L13-2true [2020-12-01 14:55:22,891 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!((0 != main_~y~0 && main_~x~0 >= 0) && main_~y~0 >= 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 6#L17true assume main_~x~0 == main_~y~0;main_~y~0 := 0; 8#L21-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 5#L13-2true [2020-12-01 14:55:22,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:55:22,898 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-12-01 14:55:22,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:55:22,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026090522] [2020-12-01 14:55:22,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:55:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:55:22,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:55:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:55:23,001 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:55:23,019 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:55:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:55:23,023 INFO L82 PathProgramCache]: Analyzing trace with hash 39832, now seen corresponding path program 1 times [2020-12-01 14:55:23,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:55:23,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510411327] [2020-12-01 14:55:23,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:55:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:55:23,052 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:55:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:55:23,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:55:23,065 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:55:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:55:23,076 INFO L82 PathProgramCache]: Analyzing trace with hash 963353, now seen corresponding path program 1 times [2020-12-01 14:55:23,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:55:23,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249091131] [2020-12-01 14:55:23,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:55:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:55:23,089 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:55:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:55:23,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:55:23,110 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:55:23,263 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2020-12-01 14:55:23,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 02:55:23 BoogieIcfgContainer [2020-12-01 14:55:23,384 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-12-01 14:55:23,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:55:23,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:55:23,385 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:55:23,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:55:22" (3/4) ... [2020-12-01 14:55:23,388 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-12-01 14:55:23,441 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3a6e27e1-cde7-4451-9d67-2b73412aeb47/bin/uautomizer/witness.graphml [2020-12-01 14:55:23,443 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:55:23,445 INFO L168 Benchmark]: Toolchain (without parser) took 1293.79 ms. Allocated memory is still 119.5 MB. Free memory was 92.2 MB in the beginning and 61.5 MB in the end (delta: 30.7 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:55:23,446 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:55:23,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.98 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 98.4 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 14:55:23,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.17 ms. Allocated memory is still 119.5 MB. Free memory was 98.4 MB in the beginning and 97.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:55:23,448 INFO L168 Benchmark]: Boogie Preprocessor took 22.21 ms. Allocated memory is still 119.5 MB. Free memory was 97.1 MB in the beginning and 96.3 MB in the end (delta: 771.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:55:23,448 INFO L168 Benchmark]: RCFGBuilder took 250.71 ms. Allocated memory is still 119.5 MB. Free memory was 96.3 MB in the beginning and 87.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 14:55:23,449 INFO L168 Benchmark]: BuchiAutomizer took 630.18 ms. Allocated memory is still 119.5 MB. Free memory was 87.4 MB in the beginning and 63.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:55:23,450 INFO L168 Benchmark]: Witness Printer took 58.92 ms. Allocated memory is still 119.5 MB. Free memory was 63.2 MB in the beginning and 61.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:55:23,454 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.98 ms. Allocated memory is still 119.5 MB. Free memory was 91.9 MB in the beginning and 98.4 MB in the end (delta: -6.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.17 ms. Allocated memory is still 119.5 MB. Free memory was 98.4 MB in the beginning and 97.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.21 ms. Allocated memory is still 119.5 MB. Free memory was 97.1 MB in the beginning and 96.3 MB in the end (delta: 771.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 250.71 ms. Allocated memory is still 119.5 MB. Free memory was 96.3 MB in the beginning and 87.4 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 630.18 ms. Allocated memory is still 119.5 MB. Free memory was 87.4 MB in the beginning and 63.2 MB in the end (delta: 24.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 58.92 ms. Allocated memory is still 119.5 MB. Free memory was 63.2 MB in the beginning and 61.5 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 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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: 13]: 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 {xtmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2a09b70e=0, tmp=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@67cd7d5=0, x=1, y=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE (y != 0 && x >= 0) && y >= 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x == y [L18] y = 0 [L26] y = xtmp [L27] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...