./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a 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_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R --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 c8c2842840d9df2fd19d5532fbc3700c74bea362cad75e31db6c666eb38ff4df --- 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-38b53e6 [2022-11-25 17:06:45,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:06:45,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:06:45,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:06:45,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:06:45,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:06:45,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:06:45,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:06:45,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:06:45,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:06:45,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:06:45,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:06:45,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:06:45,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:06:45,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:06:45,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:06:45,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:06:45,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:06:45,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:06:45,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:06:45,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:06:45,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:06:45,242 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:06:45,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:06:45,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:06:45,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:06:45,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:06:45,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:06:45,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:06:45,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:06:45,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:06:45,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:06:45,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:06:45,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:06:45,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:06:45,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:06:45,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:06:45,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:06:45,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:06:45,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:06:45,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:06:45,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-25 17:06:45,309 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:06:45,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:06:45,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:06:45,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:06:45,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:06:45,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:06:45,312 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:06:45,312 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 17:06:45,312 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 17:06:45,313 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 17:06:45,314 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 17:06:45,314 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 17:06:45,314 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 17:06:45,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:06:45,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:06:45,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:06:45,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:06:45,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 17:06:45,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 17:06:45,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 17:06:45,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:06:45,316 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 17:06:45,316 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:06:45,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 17:06:45,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:06:45,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:06:45,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:06:45,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:06:45,319 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 17:06:45,319 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_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8c2842840d9df2fd19d5532fbc3700c74bea362cad75e31db6c666eb38ff4df [2022-11-25 17:06:45,564 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:06:45,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:06:45,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:06:45,610 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:06:45,611 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:06:45,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2022-11-25 17:06:48,699 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:06:48,950 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:06:48,951 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2022-11-25 17:06:48,960 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/data/67507067d/4a1431898cd54a768f1b11f066de5f2c/FLAG99a26f186 [2022-11-25 17:06:48,979 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/data/67507067d/4a1431898cd54a768f1b11f066de5f2c [2022-11-25 17:06:48,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:06:48,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:06:48,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:06:48,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:06:48,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:06:48,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:06:48" (1/1) ... [2022-11-25 17:06:48,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c6b8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:48, skipping insertion in model container [2022-11-25 17:06:48,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:06:48" (1/1) ... [2022-11-25 17:06:49,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:06:49,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:06:49,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:06:49,156 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:06:49,166 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:06:49,176 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:06:49,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49 WrapperNode [2022-11-25 17:06:49,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:06:49,178 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:06:49,178 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:06:49,178 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:06:49,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,206 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2022-11-25 17:06:49,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:06:49,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:06:49,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:06:49,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:06:49,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,225 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,226 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:06:49,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:06:49,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:06:49,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:06:49,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (1/1) ... [2022-11-25 17:06:49,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 17:06:49,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:06:49,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 17:06:49,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 17:06:49,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:06:49,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:06:49,393 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:06:49,396 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:06:49,506 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:06:49,513 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:06:49,513 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:06:49,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:06:49 BoogieIcfgContainer [2022-11-25 17:06:49,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:06:49,517 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 17:06:49,517 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 17:06:49,521 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 17:06:49,522 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:06:49,522 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 05:06:48" (1/3) ... [2022-11-25 17:06:49,524 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c3bba77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:06:49, skipping insertion in model container [2022-11-25 17:06:49,524 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:06:49,524 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:06:49" (2/3) ... [2022-11-25 17:06:49,527 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c3bba77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 05:06:49, skipping insertion in model container [2022-11-25 17:06:49,527 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 17:06:49,527 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:06:49" (3/3) ... [2022-11-25 17:06:49,529 INFO L332 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2022-11-25 17:06:49,617 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 17:06:49,618 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 17:06:49,618 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 17:06:49,618 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 17:06:49,618 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 17:06:49,619 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 17:06:49,619 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 17:06:49,619 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 17:06:49,625 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-11-25 17:06:49,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-25 17:06:49,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:06:49,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:06:49,657 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 17:06:49,658 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-25 17:06:49,658 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 17:06:49,659 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-11-25 17:06:49,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-11-25 17:06:49,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 17:06:49,661 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 17:06:49,661 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 17:06:49,661 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-11-25 17:06:49,670 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_~y1~0#1, main_~y2~0#1;havoc main_~y1~0#1;havoc main_~y2~0#1;main_~y1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 9#L20true assume main_~y1~0#1 >= 0 && main_~y2~0#1 >= 0; 8#L22-2true [2022-11-25 17:06:49,671 INFO L750 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~y1~0#1 != main_~y2~0#1); 3#L22true assume main_~y1~0#1 > main_~y2~0#1;main_~y1~0#1 := main_~y1~0#1 - main_~y2~0#1; 8#L22-2true [2022-11-25 17:06:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-25 17:06:49,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:49,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950118316] [2022-11-25 17:06:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:49,790 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:49,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:06:49,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1412, now seen corresponding path program 1 times [2022-11-25 17:06:49,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:49,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161835911] [2022-11-25 17:06:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:49,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:49,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:49,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:06:49,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:06:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash 28693989, now seen corresponding path program 1 times [2022-11-25 17:06:49,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:06:49,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128620203] [2022-11-25 17:06:49,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:06:49,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:06:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:49,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:49,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:06:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:50,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:06:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:06:50,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 05:06:50 BoogieIcfgContainer [2022-11-25 17:06:50,087 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 17:06:50,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:06:50,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:06:50,088 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:06:50,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:06:49" (3/4) ... [2022-11-25 17:06:50,092 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-25 17:06:50,163 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:06:50,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:06:50,165 INFO L158 Benchmark]: Toolchain (without parser) took 1181.16ms. Allocated memory is still 134.2MB. Free memory was 104.2MB in the beginning and 64.3MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-25 17:06:50,166 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:06:50,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.01ms. Allocated memory is still 134.2MB. Free memory was 104.2MB in the beginning and 95.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:06:50,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.68ms. Allocated memory is still 134.2MB. Free memory was 95.1MB in the beginning and 93.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:06:50,168 INFO L158 Benchmark]: Boogie Preprocessor took 20.20ms. Allocated memory is still 134.2MB. Free memory was 93.7MB in the beginning and 93.1MB in the end (delta: 647.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:06:50,169 INFO L158 Benchmark]: RCFGBuilder took 287.63ms. Allocated memory is still 134.2MB. Free memory was 92.5MB in the beginning and 84.2MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 17:06:50,169 INFO L158 Benchmark]: BuchiAutomizer took 570.31ms. Allocated memory is still 134.2MB. Free memory was 84.2MB in the beginning and 66.4MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 17:06:50,170 INFO L158 Benchmark]: Witness Printer took 75.82ms. Allocated memory is still 134.2MB. Free memory was 66.4MB in the beginning and 64.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:06:50,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory is still 62.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.01ms. Allocated memory is still 134.2MB. Free memory was 104.2MB in the beginning and 95.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.68ms. Allocated memory is still 134.2MB. Free memory was 95.1MB in the beginning and 93.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.20ms. Allocated memory is still 134.2MB. Free memory was 93.7MB in the beginning and 93.1MB in the end (delta: 647.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 287.63ms. Allocated memory is still 134.2MB. Free memory was 92.5MB in the beginning and 84.2MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 570.31ms. Allocated memory is still 134.2MB. Free memory was 84.2MB in the beginning and 66.4MB in the end (delta: 17.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 75.82ms. Allocated memory is still 134.2MB. Free memory was 66.4MB in the beginning and 64.3MB in the end (delta: 2.1MB). 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 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 InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 21]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L17] int y1, y2; [L18] y1 = __VERIFIER_nondet_int() [L19] y2 = __VERIFIER_nondet_int() [L20] COND TRUE y1 >= 0 && y2 >= 0 VAL [y1=1, y2=0] Loop: [L21] COND TRUE y1 != y2 [L22] COND TRUE y1 > y2 [L23] y1 = y1 - y2 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 21]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int y1, y2; [L18] y1 = __VERIFIER_nondet_int() [L19] y2 = __VERIFIER_nondet_int() [L20] COND TRUE y1 >= 0 && y2 >= 0 VAL [y1=1, y2=0] Loop: [L21] COND TRUE y1 != y2 [L22] COND TRUE y1 > y2 [L23] y1 = y1 - y2 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-25 17:06:50,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53037e7e-d486-4cf1-9a75-7f3a7fdc4b68/bin/uautomizer-ZsLfNo2U6R/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)