./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 f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Ex05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX --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 fe18722fa54a7078517ae7582e6099223a71d937bfeb5065d832643df19b81c8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:49:31,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:49:31,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:49:31,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:49:31,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:49:31,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:49:31,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:49:31,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:49:31,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:49:31,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:49:31,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:49:31,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:49:31,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:49:31,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:49:31,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:49:31,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:49:31,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:49:31,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:49:31,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:49:31,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:49:31,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:49:31,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:49:31,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:49:31,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:49:31,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:49:31,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:49:31,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:49:31,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:49:31,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:49:31,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:49:31,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:49:31,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:49:31,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:49:31,845 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:49:31,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:49:31,847 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:49:31,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:49:31,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:49:31,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:49:31,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:49:31,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:49:31,853 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-09 09:49:31,920 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:49:31,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:49:31,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:49:31,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:49:31,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:49:31,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:49:31,925 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:49:31,925 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 09:49:31,926 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 09:49:31,926 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 09:49:31,927 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 09:49:31,928 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 09:49:31,928 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 09:49:31,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:49:31,929 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:49:31,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:49:31,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:49:31,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 09:49:31,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 09:49:31,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 09:49:31,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:49:31,932 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 09:49:31,932 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:49:31,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 09:49:31,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:49:31,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:49:31,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:49:31,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:49:31,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:49:31,938 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 09:49:31,938 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_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe18722fa54a7078517ae7582e6099223a71d937bfeb5065d832643df19b81c8 [2021-11-09 09:49:32,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:49:32,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:49:32,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:49:32,417 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:49:32,418 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:49:32,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/termination-restricted-15/Ex05.c [2021-11-09 09:49:32,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/data/c999d77a3/8dfecb3d82b24b93a2e377d4482cd0dd/FLAGc3eca1992 [2021-11-09 09:49:33,051 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:49:33,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/sv-benchmarks/c/termination-restricted-15/Ex05.c [2021-11-09 09:49:33,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/data/c999d77a3/8dfecb3d82b24b93a2e377d4482cd0dd/FLAGc3eca1992 [2021-11-09 09:49:33,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/data/c999d77a3/8dfecb3d82b24b93a2e377d4482cd0dd [2021-11-09 09:49:33,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:49:33,413 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:49:33,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:49:33,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:49:33,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:49:33,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eebbe1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33, skipping insertion in model container [2021-11-09 09:49:33,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:49:33,462 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:49:33,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:49:33,660 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:49:33,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:49:33,692 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:49:33,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33 WrapperNode [2021-11-09 09:49:33,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:49:33,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:49:33,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:49:33,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:49:33,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:49:33,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:49:33,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:49:33,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:49:33,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:49:33,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:49:33,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:49:33,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:49:33,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (1/1) ... [2021-11-09 09:49:33,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:49:33,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:49:33,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:49:33,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 09:49:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:49:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:49:34,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:49:34,071 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-09 09:49:34,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:49:34 BoogieIcfgContainer [2021-11-09 09:49:34,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:49:34,077 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 09:49:34,077 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 09:49:34,082 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 09:49:34,083 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:49:34,084 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 09:49:33" (1/3) ... [2021-11-09 09:49:34,087 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25faecdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 09:49:34, skipping insertion in model container [2021-11-09 09:49:34,087 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:49:34,087 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:49:33" (2/3) ... [2021-11-09 09:49:34,090 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25faecdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 09:49:34, skipping insertion in model container [2021-11-09 09:49:34,090 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:49:34,091 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:49:34" (3/3) ... [2021-11-09 09:49:34,093 INFO L389 chiAutomizerObserver]: Analyzing ICFG Ex05.c [2021-11-09 09:49:34,157 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 09:49:34,158 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 09:49:34,158 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 09:49:34,158 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 09:49:34,158 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 09:49:34,159 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 09:49:34,159 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 09:49:34,159 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 09:49:34,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:34,201 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-09 09:49:34,202 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:49:34,202 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:49:34,210 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-09 09:49:34,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-09 09:49:34,210 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 09:49:34,211 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:49:34,212 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-11-09 09:49:34,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:49:34,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:49:34,213 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-09 09:49:34,213 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-11-09 09:49:34,222 INFO L791 eck$LassoCheckResult]: Stem: 4#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; 5#L9-2true [2021-11-09 09:49:34,222 INFO L793 eck$LassoCheckResult]: Loop: 5#L9-2true assume !!(0 != ~unnamed0~0~true); 5#L9-2true [2021-11-09 09:49:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:34,231 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-11-09 09:49:34,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:34,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970817178] [2021-11-09 09:49:34,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:34,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:34,347 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:34,375 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-11-09 09:49:34,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:34,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133292585] [2021-11-09 09:49:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:34,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:34,389 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:34,393 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:34,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:49:34,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-11-09 09:49:34,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:49:34,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192128496] [2021-11-09 09:49:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:49:34,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:49:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:34,405 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:49:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:49:34,413 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:49:34,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 09:49:34 BoogieIcfgContainer [2021-11-09 09:49:34,507 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-09 09:49:34,508 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:49:34,508 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:49:34,509 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:49:34,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:49:34" (3/4) ... [2021-11-09 09:49:34,513 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-09 09:49:34,553 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:49:34,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:49:34,556 INFO L168 Benchmark]: Toolchain (without parser) took 1141.34 ms. Allocated memory is still 92.3 MB. Free memory was 58.4 MB in the beginning and 44.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:34,557 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:49:34,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.14 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 70.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:34,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.35 ms. Allocated memory is still 92.3 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:34,577 INFO L168 Benchmark]: Boogie Preprocessor took 36.94 ms. Allocated memory is still 92.3 MB. Free memory was 69.0 MB in the beginning and 68.3 MB in the end (delta: 718.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:49:34,578 INFO L168 Benchmark]: RCFGBuilder took 274.39 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 61.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:34,580 INFO L168 Benchmark]: BuchiAutomizer took 430.14 ms. Allocated memory is still 92.3 MB. Free memory was 61.0 MB in the beginning and 46.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:34,581 INFO L168 Benchmark]: Witness Printer took 45.11 ms. Allocated memory is still 92.3 MB. Free memory was 46.0 MB in the beginning and 44.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:49:34,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory was 63.0 MB in the beginning and 63.0 MB in the end (delta: 25.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 278.14 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 70.3 MB in the end (delta: -12.2 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.35 ms. Allocated memory is still 92.3 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.94 ms. Allocated memory is still 92.3 MB. Free memory was 69.0 MB in the beginning and 68.3 MB in the end (delta: 718.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 274.39 ms. Allocated memory is still 92.3 MB. Free memory was 68.3 MB in the beginning and 61.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 430.14 ms. Allocated memory is still 92.3 MB. Free memory was 61.0 MB in the beginning and 46.0 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 45.11 ms. Allocated memory is still 92.3 MB. Free memory was 46.0 MB in the beginning and 44.6 MB in the end (delta: 1.4 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 0.3s 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@3c82e51e=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! [2021-11-09 09:49:34,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_544d9352-1b00-4f39-ab78-d62ea93ffead/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)