./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_21.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be --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 09b58293612eb320ba1daf9ca7fe4947dbbcf9de2baf65b6860d058db21da006 ............................................................................................................................................................................................................................................................................. 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-e943c26 [2021-10-21 20:18:37,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:18:37,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:18:37,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:18:37,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:18:37,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:18:37,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:18:37,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:18:37,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:18:37,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:18:37,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:18:37,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:18:37,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:18:37,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:18:37,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:18:37,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:18:37,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:18:37,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:18:37,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:18:37,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:18:37,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:18:37,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:18:37,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:18:37,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:18:37,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:18:37,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:18:37,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:18:37,246 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:18:37,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:18:37,248 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:18:37,248 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:18:37,249 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:18:37,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:18:37,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:18:37,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:18:37,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:18:37,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:18:37,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:18:37,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:18:37,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:18:37,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:18:37,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 20:18:37,315 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:18:37,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:18:37,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:18:37,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:18:37,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:18:37,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:18:37,321 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:18:37,321 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:18:37,321 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:18:37,322 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:18:37,323 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:18:37,323 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:18:37,323 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:18:37,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:18:37,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:18:37,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:18:37,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:18:37,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:18:37,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:18:37,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:18:37,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:18:37,326 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:18:37,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:18:37,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:18:37,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:18:37,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:18:37,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:18:37,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:18:37,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:18:37,330 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:18:37,331 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_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09b58293612eb320ba1daf9ca7fe4947dbbcf9de2baf65b6860d058db21da006 [2021-10-21 20:18:37,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:18:37,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:18:37,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:18:37,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:18:37,588 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:18:37,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-restricted-15/NO_21.c [2021-10-21 20:18:37,658 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/data/8ad2542e5/5b2d8e1f80cc452fa2b510c905dcfebf/FLAG8f1a0fc61 [2021-10-21 20:18:38,073 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:18:38,073 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/sv-benchmarks/c/termination-restricted-15/NO_21.c [2021-10-21 20:18:38,081 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/data/8ad2542e5/5b2d8e1f80cc452fa2b510c905dcfebf/FLAG8f1a0fc61 [2021-10-21 20:18:38,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/data/8ad2542e5/5b2d8e1f80cc452fa2b510c905dcfebf [2021-10-21 20:18:38,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:18:38,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:18:38,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:18:38,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:18:38,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:18:38,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545706ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38, skipping insertion in model container [2021-10-21 20:18:38,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:18:38,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:18:38,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:18:38,651 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:18:38,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:18:38,701 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:18:38,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38 WrapperNode [2021-10-21 20:18:38,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:18:38,707 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:18:38,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:18:38,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:18:38,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:18:38,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:18:38,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:18:38,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:18:38,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:18:38,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:18:38,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:18:38,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:18:38,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (1/1) ... [2021-10-21 20:18:38,772 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:18:38,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:18:38,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:18:38,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:18:38,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:18:38,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:18:38,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:18:38,995 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 20:18:38,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:18:38 BoogieIcfgContainer [2021-10-21 20:18:38,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:18:39,000 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:18:39,001 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:18:39,004 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:18:39,005 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:18:39,005 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:18:38" (1/3) ... [2021-10-21 20:18:39,008 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47763758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:18:39, skipping insertion in model container [2021-10-21 20:18:39,009 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:18:39,009 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:18:38" (2/3) ... [2021-10-21 20:18:39,009 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47763758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:18:39, skipping insertion in model container [2021-10-21 20:18:39,010 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:18:39,011 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:18:38" (3/3) ... [2021-10-21 20:18:39,013 INFO L389 chiAutomizerObserver]: Analyzing ICFG NO_21.c [2021-10-21 20:18:39,069 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:18:39,069 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:18:39,069 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:18:39,069 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:18:39,070 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:18:39,070 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:18:39,070 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:18:39,070 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:18:39,085 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) [2021-10-21 20:18:39,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 20:18:39,103 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:18:39,103 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:18:39,109 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 20:18:39,109 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 20:18:39,109 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:18:39,110 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) [2021-10-21 20:18:39,111 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 20:18:39,111 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:18:39,111 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:18:39,111 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 20:18:39,112 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 20:18:39,118 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0;havoc main_~i~0;main_~i~0 := 0; 5#L9-2true [2021-10-21 20:18:39,118 INFO L793 eck$LassoCheckResult]: Loop: 5#L9-2true assume !!(main_~i~0 < 100);main_~i~0 := 1 + main_~i~0;main_~i~0 := main_~i~0 - 1; 5#L9-2true [2021-10-21 20:18:39,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:18:39,129 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-21 20:18:39,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:18:39,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991800787] [2021-10-21 20:18:39,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:18:39,141 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:18:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:18:39,221 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:18:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:18:39,242 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:18:39,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:18:39,246 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-21 20:18:39,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:18:39,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139199048] [2021-10-21 20:18:39,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:18:39,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:18:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:18:39,253 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:18:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:18:39,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:18:39,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:18:39,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-21 20:18:39,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:18:39,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274599636] [2021-10-21 20:18:39,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:18:39,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:18:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:18:39,269 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:18:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:18:39,273 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:18:39,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:18:39 BoogieIcfgContainer [2021-10-21 20:18:39,363 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:18:39,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:18:39,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:18:39,364 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:18:39,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:18:38" (3/4) ... [2021-10-21 20:18:39,367 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 20:18:39,398 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:18:39,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:18:39,401 INFO L168 Benchmark]: Toolchain (without parser) took 926.46 ms. Allocated memory is still 96.5 MB. Free memory was 64.5 MB in the beginning and 47.8 MB in the end (delta: 16.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:39,401 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:18:39,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.54 ms. Allocated memory is still 96.5 MB. Free memory was 64.3 MB in the beginning and 73.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:39,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.34 ms. Allocated memory is still 96.5 MB. Free memory was 73.9 MB in the beginning and 72.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:18:39,404 INFO L168 Benchmark]: Boogie Preprocessor took 18.50 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 71.8 MB in the end (delta: 825.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:39,405 INFO L168 Benchmark]: RCFGBuilder took 238.60 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 64.3 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:39,406 INFO L168 Benchmark]: BuchiAutomizer took 363.15 ms. Allocated memory is still 96.5 MB. Free memory was 64.3 MB in the beginning and 49.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:39,407 INFO L168 Benchmark]: Witness Printer took 35.18 ms. Allocated memory is still 96.5 MB. Free memory was 49.2 MB in the beginning and 47.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:18:39,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 228.54 ms. Allocated memory is still 96.5 MB. Free memory was 64.3 MB in the beginning and 73.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.34 ms. Allocated memory is still 96.5 MB. Free memory was 73.9 MB in the beginning and 72.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.50 ms. Allocated memory is still 96.5 MB. Free memory was 72.7 MB in the beginning and 71.8 MB in the end (delta: 825.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 238.60 ms. Allocated memory is still 96.5 MB. Free memory was 71.8 MB in the beginning and 64.3 MB in the end (delta: 7.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 363.15 ms. Allocated memory is still 96.5 MB. Free memory was 64.3 MB in the beginning and 49.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 35.18 ms. Allocated memory is still 96.5 MB. Free memory was 49.2 MB in the beginning and 47.8 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\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 = 0 Loop: [L9] COND TRUE i < 100 [L10] i = i+1 [L11] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 20:18:39,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1957dc22-ed41-48bb-95d2-eec1eb081150/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...