./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro --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 c06467573d5b161d2e6fae8b3debbeebc37f400272e6a21d533eff435db2aec4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:17:45,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:17:45,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:17:45,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:17:45,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:17:45,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:17:45,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:17:45,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:17:45,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:17:45,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:17:45,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:17:45,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:17:45,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:17:45,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:17:45,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:17:45,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:17:45,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:17:45,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:17:45,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:17:45,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:17:45,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:17:45,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:17:45,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:17:45,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:17:45,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:17:45,690 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:17:45,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:17:45,698 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:17:45,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:17:45,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:17:45,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:17:45,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:17:45,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:17:45,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:17:45,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:17:45,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:17:45,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:17:45,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:17:45,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:17:45,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:17:45,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:17:45,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-18 20:17:45,759 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:17:45,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:17:45,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:17:45,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:17:45,765 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:17:45,765 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:17:45,765 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:17:45,765 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 20:17:45,766 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 20:17:45,766 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 20:17:45,767 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 20:17:45,767 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 20:17:45,768 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 20:17:45,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:17:45,768 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:17:45,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:17:45,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:17:45,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 20:17:45,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 20:17:45,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 20:17:45,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:17:45,770 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 20:17:45,770 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:17:45,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 20:17:45,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:17:45,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:17:45,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:17:45,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:17:45,774 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 20:17:45,774 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_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c06467573d5b161d2e6fae8b3debbeebc37f400272e6a21d533eff435db2aec4 [2022-11-18 20:17:46,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:17:46,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:17:46,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:17:46,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:17:46,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:17:46,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2022-11-18 20:17:46,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/data/ba3fb80a0/a0867045d12442099bc8037546faee3d/FLAGbb56d4c0e [2022-11-18 20:17:46,883 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:17:46,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2022-11-18 20:17:46,895 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/data/ba3fb80a0/a0867045d12442099bc8037546faee3d/FLAGbb56d4c0e [2022-11-18 20:17:47,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/data/ba3fb80a0/a0867045d12442099bc8037546faee3d [2022-11-18 20:17:47,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:17:47,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:17:47,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:47,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:17:47,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:17:47,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f34cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47, skipping insertion in model container [2022-11-18 20:17:47,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:17:47,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:17:47,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:47,476 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:17:47,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:17:47,507 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:17:47,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47 WrapperNode [2022-11-18 20:17:47,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:17:47,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:47,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:17:47,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:17:47,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,549 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-18 20:17:47,549 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:17:47,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:17:47,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:17:47,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:17:47,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:17:47,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:17:47,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:17:47,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:17:47,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (1/1) ... [2022-11-18 20:17:47,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 20:17:47,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:17:47,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 20:17:47,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 20:17:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:17:47,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:17:47,757 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:17:47,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:17:47,853 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:17:47,860 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:17:47,860 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:17:47,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:47 BoogieIcfgContainer [2022-11-18 20:17:47,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:17:47,863 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 20:17:47,864 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 20:17:47,869 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 20:17:47,869 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:17:47,870 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 08:17:47" (1/3) ... [2022-11-18 20:17:47,871 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25fa7567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:17:47, skipping insertion in model container [2022-11-18 20:17:47,871 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:17:47,871 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:17:47" (2/3) ... [2022-11-18 20:17:47,872 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@25fa7567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 08:17:47, skipping insertion in model container [2022-11-18 20:17:47,872 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 20:17:47,872 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:47" (3/3) ... [2022-11-18 20:17:47,874 INFO L332 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2022-11-18 20:17:47,935 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 20:17:47,935 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 20:17:47,936 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 20:17:47,936 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 20:17:47,936 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 20:17:47,936 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 20:17:47,936 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 20:17:47,937 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 20:17:47,941 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-18 20:17:47,961 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-18 20:17:47,961 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:17:47,961 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:17:47,971 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:17:47,971 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-18 20:17:47,971 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 20:17:47,972 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-11-18 20:17:47,973 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-18 20:17:47,974 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:17:47,974 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:17:47,974 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:17:47,975 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-18 20:17:47,983 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 3#L18true assume !(main_~k~0#1 >= 0);main_~i~0#1 := -1; 8#L23-1true [2022-11-18 20:17:47,984 INFO L750 eck$LassoCheckResult]: Loop: 8#L23-1true assume !!(main_~i~0#1 >= 0);main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 8#L23-1true [2022-11-18 20:17:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:47,998 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-11-18 20:17:48,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:48,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000383673] [2022-11-18 20:17:48,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:48,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:17:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:17:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2022-11-18 20:17:48,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:48,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341952777] [2022-11-18 20:17:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:48,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:48,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:17:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:17:48,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2022-11-18 20:17:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:48,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118233239] [2022-11-18 20:17:48,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:17:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:17:48,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:17:48,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118233239] [2022-11-18 20:17:48,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118233239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:17:48,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:17:48,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:17:48,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723689863] [2022-11-18 20:17:48,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:17:48,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:17:48,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:17:48,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:17:48,385 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-18 20:17:48,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:17:48,423 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2022-11-18 20:17:48,425 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2022-11-18 20:17:48,426 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-18 20:17:48,430 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 4 states and 4 transitions. [2022-11-18 20:17:48,431 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-11-18 20:17:48,432 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2022-11-18 20:17:48,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 4 transitions. [2022-11-18 20:17:48,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:17:48,433 INFO L218 hiAutomatonCegarLoop]: Abstraction has 4 states and 4 transitions. [2022-11-18 20:17:48,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 4 transitions. [2022-11-18 20:17:48,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2022-11-18 20:17:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-18 20:17:48,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2022-11-18 20:17:48,497 INFO L240 hiAutomatonCegarLoop]: Abstraction has 4 states and 4 transitions. [2022-11-18 20:17:48,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:17:48,503 INFO L428 stractBuchiCegarLoop]: Abstraction has 4 states and 4 transitions. [2022-11-18 20:17:48,503 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 20:17:48,503 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 4 transitions. [2022-11-18 20:17:48,517 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-11-18 20:17:48,517 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 20:17:48,518 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 20:17:48,518 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 20:17:48,518 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-18 20:17:48,519 INFO L748 eck$LassoCheckResult]: Stem: 30#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 31#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~k~0#1, main_~i~0#1;havoc main_~k~0#1;havoc main_~i~0#1;main_~k~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 28#L18 assume main_~k~0#1 >= 0; 29#L23-1 [2022-11-18 20:17:48,519 INFO L750 eck$LassoCheckResult]: Loop: 29#L23-1 assume !!(main_~i~0#1 >= 0);main_~i~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 29#L23-1 [2022-11-18 20:17:48,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-18 20:17:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:48,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808620747] [2022-11-18 20:17:48,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:17:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:17:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:48,548 INFO L85 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 2 times [2022-11-18 20:17:48,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:48,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933775724] [2022-11-18 20:17:48,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:48,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,554 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:17:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,559 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:17:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:17:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash 925614, now seen corresponding path program 1 times [2022-11-18 20:17:48,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:17:48,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227149144] [2022-11-18 20:17:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:17:48,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:17:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:17:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,610 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:17:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:17:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:17:48,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 08:17:48 BoogieIcfgContainer [2022-11-18 20:17:48,745 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 20:17:48,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:17:48,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:17:48,748 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:17:48,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:17:47" (3/4) ... [2022-11-18 20:17:48,755 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-18 20:17:48,816 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:17:48,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:17:48,822 INFO L158 Benchmark]: Toolchain (without parser) took 1582.55ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 99.6MB in the beginning and 146.3MB in the end (delta: -46.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:17:48,822 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:17:48,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 269.65ms. Allocated memory is still 134.2MB. Free memory was 99.4MB in the beginning and 109.6MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:17:48,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.75ms. Allocated memory is still 134.2MB. Free memory was 109.6MB in the beginning and 108.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:17:48,824 INFO L158 Benchmark]: Boogie Preprocessor took 18.01ms. Allocated memory is still 134.2MB. Free memory was 108.4MB in the beginning and 107.5MB in the end (delta: 891.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:17:48,824 INFO L158 Benchmark]: RCFGBuilder took 293.95ms. Allocated memory is still 134.2MB. Free memory was 107.5MB in the beginning and 99.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 20:17:48,825 INFO L158 Benchmark]: BuchiAutomizer took 882.11ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 99.1MB in the beginning and 148.3MB in the end (delta: -49.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:17:48,825 INFO L158 Benchmark]: Witness Printer took 69.25ms. Allocated memory is still 172.0MB. Free memory was 148.3MB in the beginning and 146.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:17:48,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 36.9MB in the beginning and 36.9MB in the end (delta: 45.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 269.65ms. Allocated memory is still 134.2MB. Free memory was 99.4MB in the beginning and 109.6MB in the end (delta: -10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.75ms. Allocated memory is still 134.2MB. Free memory was 109.6MB in the beginning and 108.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.01ms. Allocated memory is still 134.2MB. Free memory was 108.4MB in the beginning and 107.5MB in the end (delta: 891.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.95ms. Allocated memory is still 134.2MB. Free memory was 107.5MB in the beginning and 99.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 882.11ms. Allocated memory was 134.2MB in the beginning and 172.0MB in the end (delta: 37.7MB). Free memory was 99.1MB in the beginning and 148.3MB in the end (delta: -49.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 69.25ms. Allocated memory is still 172.0MB. Free memory was 148.3MB in the beginning and 146.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. 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: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 9 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 VAL [k=0] Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 VAL [k=0] Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-18 20:17:48,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d5fa541-d862-4a54-8a16-3913694b02a7/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)