./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/WhileTrue.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/WhileTrue.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3 --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 b58543c5c6c478461bb3678f5712726562def78f ......................................................................................................................................................................................................................................................................... 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-5709675 [2021-10-15 20:01:09,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:01:09,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:01:09,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:01:09,195 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:01:09,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:01:09,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:01:09,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:01:09,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:01:09,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:01:09,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:01:09,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:01:09,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:01:09,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:01:09,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:01:09,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:01:09,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:01:09,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:01:09,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:01:09,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:01:09,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:01:09,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:01:09,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:01:09,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:01:09,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:01:09,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:01:09,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:01:09,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:01:09,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:01:09,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:01:09,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:01:09,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:01:09,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:01:09,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:01:09,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:01:09,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:01:09,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:01:09,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:01:09,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:01:09,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:01:09,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:01:09,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-15 20:01:09,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:01:09,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:01:09,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:01:09,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:01:09,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:01:09,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:01:09,308 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:01:09,308 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-15 20:01:09,308 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-15 20:01:09,309 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-15 20:01:09,309 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-15 20:01:09,309 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-15 20:01:09,309 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-15 20:01:09,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:01:09,310 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-15 20:01:09,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:01:09,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:01:09,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-15 20:01:09,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-15 20:01:09,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-15 20:01:09,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:01:09,312 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-15 20:01:09,312 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:01:09,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-15 20:01:09,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:01:09,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:01:09,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:01:09,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:01:09,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:01:09,315 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-15 20:01:09,316 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_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b58543c5c6c478461bb3678f5712726562def78f [2021-10-15 20:01:09,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:01:09,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:01:09,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:01:09,713 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:01:09,714 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:01:09,716 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/termination-crafted/WhileTrue.c [2021-10-15 20:01:09,816 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/data/b4ebdf436/2ecb6ca980b9453997389096aaaca8ba/FLAGa9d186f35 [2021-10-15 20:01:10,421 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:01:10,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/sv-benchmarks/c/termination-crafted/WhileTrue.c [2021-10-15 20:01:10,437 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/data/b4ebdf436/2ecb6ca980b9453997389096aaaca8ba/FLAGa9d186f35 [2021-10-15 20:01:10,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/data/b4ebdf436/2ecb6ca980b9453997389096aaaca8ba [2021-10-15 20:01:10,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:01:10,816 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:01:10,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:01:10,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:01:10,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:01:10,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:01:10" (1/1) ... [2021-10-15 20:01:10,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e45d46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:10, skipping insertion in model container [2021-10-15 20:01:10,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:01:10" (1/1) ... [2021-10-15 20:01:10,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:01:10,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:01:11,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:01:11,117 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:01:11,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:01:11,168 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:01:11,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11 WrapperNode [2021-10-15 20:01:11,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:01:11,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:01:11,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:01:11,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:01:11,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,219 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:01:11,220 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:01:11,221 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:01:11,221 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:01:11,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:01:11,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:01:11,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:01:11,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:01:11,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (1/1) ... [2021-10-15 20:01:11,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-15 20:01:11,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:01:11,299 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-15 20:01:11,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-15 20:01:11,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:01:11,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:01:11,507 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:01:11,507 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-15 20:01:11,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:01:11 BoogieIcfgContainer [2021-10-15 20:01:11,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:01:11,512 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-15 20:01:11,512 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-15 20:01:11,516 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-15 20:01:11,517 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:01:11,518 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.10 08:01:10" (1/3) ... [2021-10-15 20:01:11,519 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cad4a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 08:01:11, skipping insertion in model container [2021-10-15 20:01:11,520 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:01:11,520 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:01:11" (2/3) ... [2021-10-15 20:01:11,521 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7cad4a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.10 08:01:11, skipping insertion in model container [2021-10-15 20:01:11,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-15 20:01:11,521 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:01:11" (3/3) ... [2021-10-15 20:01:11,523 INFO L389 chiAutomizerObserver]: Analyzing ICFG WhileTrue.c [2021-10-15 20:01:11,582 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-15 20:01:11,582 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-15 20:01:11,582 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-15 20:01:11,582 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-15 20:01:11,583 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-15 20:01:11,583 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-15 20:01:11,583 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-15 20:01:11,583 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-15 20:01:11,601 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) [2021-10-15 20:01:11,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-15 20:01:11,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:11,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:11,630 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-15 20:01:11,630 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-15 20:01:11,630 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-15 20:01:11,631 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) [2021-10-15 20:01:11,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-15 20:01:11,632 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-15 20:01:11,632 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-15 20:01:11,633 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-15 20:01:11,633 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-15 20:01:11,641 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res; 6#L13-2true [2021-10-15 20:01:11,641 INFO L793 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(0 != ~unnamed0~0~true); 6#L13-2true [2021-10-15 20:01:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:11,648 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-15 20:01:11,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:11,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769565849] [2021-10-15 20:01:11,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:11,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:11,754 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:11,779 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:11,784 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-15 20:01:11,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:11,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844448662] [2021-10-15 20:01:11,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:11,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:11,808 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:11,814 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:11,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:01:11,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-15 20:01:11,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:01:11,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139684604] [2021-10-15 20:01:11,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:01:11,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:01:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:11,836 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 20:01:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 20:01:11,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 20:01:11,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.10 08:01:11 BoogieIcfgContainer [2021-10-15 20:01:11,918 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-15 20:01:11,919 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:01:11,919 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:01:11,919 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:01:11,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:01:11" (3/4) ... [2021-10-15 20:01:11,923 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-15 20:01:11,959 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:01:11,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:01:11,962 INFO L168 Benchmark]: Toolchain (without parser) took 1145.00 ms. Allocated memory is still 100.7 MB. Free memory was 67.2 MB in the beginning and 52.4 MB in the end (delta: 14.8 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:11,963 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 100.7 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:01:11,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.77 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 77.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:11,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.31 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 76.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:01:11,967 INFO L168 Benchmark]: Boogie Preprocessor took 25.88 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 75.2 MB in the end (delta: 776.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:11,968 INFO L168 Benchmark]: RCFGBuilder took 263.06 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 68.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:11,969 INFO L168 Benchmark]: BuchiAutomizer took 406.16 ms. Allocated memory is still 100.7 MB. Free memory was 68.3 MB in the beginning and 53.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 20:01:11,970 INFO L168 Benchmark]: Witness Printer took 40.75 ms. Allocated memory is still 100.7 MB. Free memory was 53.9 MB in the beginning and 52.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:01:11,978 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 100.7 MB. Free memory is still 54.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.77 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 77.3 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.31 ms. Allocated memory is still 100.7 MB. Free memory was 77.3 MB in the beginning and 76.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.88 ms. Allocated memory is still 100.7 MB. Free memory was 76.0 MB in the beginning and 75.2 MB in the end (delta: 776.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 263.06 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 68.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 406.16 ms. Allocated memory is still 100.7 MB. Free memory was 68.3 MB in the beginning and 53.9 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 40.75 ms. Allocated memory is still 100.7 MB. Free memory was 53.9 MB in the beginning and 52.4 MB in the end (delta: 1.5 MB). There was no memory consumed. 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: 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 {\result=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: Loop: [L13] COND TRUE \read(true) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-15 20:01:12,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f098dc6b-06b1-4916-af98-e364db253195/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...