./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg --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 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 .............................................................................................................................................................................................................................................................................. 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 0.2.1-dev-b2eff8b [2021-10-28 09:52:37,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:52:37,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:52:38,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:52:38,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:52:38,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:52:38,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:52:38,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:52:38,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:52:38,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:52:38,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:52:38,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:52:38,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:52:38,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:52:38,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:52:38,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:52:38,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:52:38,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:52:38,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:52:38,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:52:38,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:52:38,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:52:38,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:52:38,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:52:38,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:52:38,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:52:38,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:52:38,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:52:38,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:52:38,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:52:38,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:52:38,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:52:38,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:52:38,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:52:38,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:52:38,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:52:38,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:52:38,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:52:38,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:52:38,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:52:38,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:52:38,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-28 09:52:38,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:52:38,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:52:38,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:52:38,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:52:38,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:52:38,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:52:38,159 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:52:38,160 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:52:38,160 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:52:38,160 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:52:38,162 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:52:38,162 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:52:38,163 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:52:38,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:52:38,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:52:38,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:52:38,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:52:38,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:52:38,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:52:38,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:52:38,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:52:38,166 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:52:38,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:52:38,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:52:38,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:52:38,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:52:38,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:52:38,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:52:38,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:52:38,173 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:52:38,173 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_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f92d67113368ce9163571f81d85414539d558535b51b4568b3b416ae740375 [2021-10-28 09:52:38,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:52:38,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:52:38,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:52:38,648 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:52:38,649 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:52:38,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2021-10-28 09:52:38,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/data/4df1a39f1/48ac3cb745224ebd91ef3450b386f95b/FLAGfa16ead0f [2021-10-28 09:52:39,471 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:52:39,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2021-10-28 09:52:39,489 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/data/4df1a39f1/48ac3cb745224ebd91ef3450b386f95b/FLAGfa16ead0f [2021-10-28 09:52:39,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/data/4df1a39f1/48ac3cb745224ebd91ef3450b386f95b [2021-10-28 09:52:39,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:52:39,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:52:39,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:39,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:52:39,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:52:39,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:39" (1/1) ... [2021-10-28 09:52:39,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192e3e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:39, skipping insertion in model container [2021-10-28 09:52:39,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:39" (1/1) ... [2021-10-28 09:52:39,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:52:39,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:52:40,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:40,127 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:52:40,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:40,180 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:52:40,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40 WrapperNode [2021-10-28 09:52:40,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:40,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:52:40,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:52:40,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:52:40,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,222 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:52:40,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:52:40,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:52:40,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:52:40,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:52:40,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:52:40,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:52:40,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:52:40,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (1/1) ... [2021-10-28 09:52:40,260 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:52:40,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:40,295 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:52:40,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:52:40,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:52:40,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:52:40,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:52:40,532 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-28 09:52:40,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:40 BoogieIcfgContainer [2021-10-28 09:52:40,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:52:40,536 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:52:40,537 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:52:40,541 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:52:40,542 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:52:40,543 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:52:39" (1/3) ... [2021-10-28 09:52:40,544 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c149075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:52:40, skipping insertion in model container [2021-10-28 09:52:40,545 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:52:40,545 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:40" (2/3) ... [2021-10-28 09:52:40,545 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@c149075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:52:40, skipping insertion in model container [2021-10-28 09:52:40,546 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:52:40,546 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:40" (3/3) ... [2021-10-28 09:52:40,548 INFO L389 chiAutomizerObserver]: Analyzing ICFG NonTerminationSimple7.c [2021-10-28 09:52:40,615 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:52:40,615 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:52:40,615 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:52:40,615 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:52:40,616 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:52:40,616 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:52:40,616 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:52:40,616 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:52:40,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-10-28 09:52:40,662 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 09:52:40,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:52:40,662 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:52:40,670 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:52:40,671 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:52:40,671 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:52:40,671 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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) [2021-10-28 09:52:40,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-28 09:52:40,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:52:40,673 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:52:40,673 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-28 09:52:40,674 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-28 09:52:40,684 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~c~0, main_~x~0;havoc main_~c~0;havoc main_~x~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~c~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L15true assume 0 == main_~c~0; 6#L16-2true [2021-10-28 09:52:40,684 INFO L793 eck$LassoCheckResult]: Loop: 6#L16-2true assume !!(main_~x~0 >= 0);main_~x~0 := main_~x~0 + main_~c~0; 6#L16-2true [2021-10-28 09:52:40,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2021-10-28 09:52:40,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:40,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434197782] [2021-10-28 09:52:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:40,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:40,824 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:40,852 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:40,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2021-10-28 09:52:40,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:40,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682354558] [2021-10-28 09:52:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:40,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:40,871 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:40,877 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:40,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:40,880 INFO L85 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2021-10-28 09:52:40,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:40,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521381800] [2021-10-28 09:52:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:40,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:40,894 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:52:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:52:40,906 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:52:41,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:52:41 BoogieIcfgContainer [2021-10-28 09:52:41,049 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:52:41,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:52:41,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:52:41,051 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:52:41,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:40" (3/4) ... [2021-10-28 09:52:41,055 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-28 09:52:41,155 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:52:41,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:52:41,158 INFO L168 Benchmark]: Toolchain (without parser) took 1318.58 ms. Allocated memory is still 102.8 MB. Free memory was 69.4 MB in the beginning and 52.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:41,160 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 76.8 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:52:41,162 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.04 ms. Allocated memory is still 102.8 MB. Free memory was 69.2 MB in the beginning and 80.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:41,167 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.33 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:52:41,169 INFO L168 Benchmark]: Boogie Preprocessor took 23.23 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 77.8 MB in the end (delta: 929.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:41,176 INFO L168 Benchmark]: RCFGBuilder took 287.99 ms. Allocated memory is still 102.8 MB. Free memory was 77.8 MB in the beginning and 70.3 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:41,178 INFO L168 Benchmark]: BuchiAutomizer took 512.90 ms. Allocated memory is still 102.8 MB. Free memory was 70.3 MB in the beginning and 54.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:41,179 INFO L168 Benchmark]: Witness Printer took 105.44 ms. Allocated memory is still 102.8 MB. Free memory was 54.3 MB in the beginning and 52.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:41,202 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 102.8 MB. Free memory was 76.8 MB in the beginning and 76.8 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 340.04 ms. Allocated memory is still 102.8 MB. Free memory was 69.2 MB in the beginning and 80.2 MB in the end (delta: -11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.33 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 78.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.23 ms. Allocated memory is still 102.8 MB. Free memory was 78.7 MB in the beginning and 77.8 MB in the end (delta: 929.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 287.99 ms. Allocated memory is still 102.8 MB. Free memory was 77.8 MB in the beginning and 70.3 MB in the end (delta: 7.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 512.90 ms. Allocated memory is still 102.8 MB. Free memory was 70.3 MB in the beginning and 54.3 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 105.44 ms. Allocated memory is still 102.8 MB. Free memory was 54.3 MB in the beginning and 52.6 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 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 16]: 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@4797c0f0=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4cd204ca=0, c=0, x=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 16]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L12] int c, x; [L13] x = __VERIFIER_nondet_int() [L14] c = __VERIFIER_nondet_int() [L15] COND TRUE c == 0 Loop: [L16] COND TRUE x >= 0 [L17] x = x + c End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:52:41,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b36ee72c-5bdd-46f7-966d-94c1d0326816/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...