./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP --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 7ec1d1d4856d24b14cb09101172e0975902985e260ca74737e781ce301d37cbb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:07,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:07,230 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 22:07:07,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:07,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:07,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:07,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:07,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:07,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:07,265 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:07,266 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:07,266 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:07:07,267 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:07:07,268 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:07:07,268 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:07:07,269 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:07:07,269 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:07:07,270 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:07,270 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:07:07,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:07:07,271 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:07,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:07:07,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:07:07,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:07:07,274 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:07:07,274 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:07,275 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:07:07,275 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:07,276 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:07,277 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:07,277 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:07,278 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:07:07,279 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:07:07,279 INFO L153 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_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ec1d1d4856d24b14cb09101172e0975902985e260ca74737e781ce301d37cbb [2023-11-06 22:07:07,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:07,608 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:07,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:07,612 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:07,613 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:07,615 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2023-11-06 22:07:10,861 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:07:11,113 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:07:11,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/sv-benchmarks/c/termination-crafted-lit/Urban-WST2013-Fig1.c [2023-11-06 22:07:11,126 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/data/43436961f/29d612fdc55f4a26901447392b7ddf65/FLAGd5b32e6e8 [2023-11-06 22:07:11,144 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/data/43436961f/29d612fdc55f4a26901447392b7ddf65 [2023-11-06 22:07:11,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:07:11,156 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:07:11,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:11,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:07:11,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:07:11,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50ee266a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11, skipping insertion in model container [2023-11-06 22:07:11,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,190 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:07:11,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:11,374 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:07:11,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:11,396 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:07:11,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11 WrapperNode [2023-11-06 22:07:11,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:11,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:11,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:07:11,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:07:11,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,411 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,433 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 14 [2023-11-06 22:07:11,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:11,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:07:11,434 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:07:11,434 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:07:11,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,451 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:07:11,456 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:07:11,456 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:07:11,456 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:07:11,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (1/1) ... [2023-11-06 22:07:11,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:11,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:11,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:11,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:07:11,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:07:11,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:07:11,627 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:07:11,630 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:07:11,729 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:07:11,736 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:07:11,737 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:07:11,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:11 BoogieIcfgContainer [2023-11-06 22:07:11,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:07:11,742 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:07:11,742 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:07:11,747 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:07:11,748 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:07:11,748 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:07:11" (1/3) ... [2023-11-06 22:07:11,749 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27d220ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:07:11, skipping insertion in model container [2023-11-06 22:07:11,750 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:07:11,750 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:11" (2/3) ... [2023-11-06 22:07:11,751 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27d220ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:07:11, skipping insertion in model container [2023-11-06 22:07:11,752 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:07:11,752 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:11" (3/3) ... [2023-11-06 22:07:11,756 INFO L332 chiAutomizerObserver]: Analyzing ICFG Urban-WST2013-Fig1.c [2023-11-06 22:07:11,845 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:07:11,845 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:07:11,845 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:07:11,845 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:07:11,846 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:07:11,846 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:07:11,846 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:07:11,846 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:07:11,851 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) [2023-11-06 22:07:11,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 22:07:11,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:11,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:11,874 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:07:11,875 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 22:07:11,875 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:07:11,875 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) [2023-11-06 22:07:11,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 22:07:11,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:11,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:11,877 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:07:11,877 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 22:07:11,886 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~x~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L18-2true [2023-11-06 22:07:11,886 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(main_~x~0#1 <= 10); 3#L18true assume !(main_~x~0#1 > 6); 6#L18-2true [2023-11-06 22:07:11,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 22:07:11,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:11,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954706596] [2023-11-06 22:07:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:11,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:11,989 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:12,007 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:12,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:12,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-11-06 22:07:12,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:12,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958714562] [2023-11-06 22:07:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:12,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:12,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:12,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:12,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:12,025 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-11-06 22:07:12,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:12,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650790669] [2023-11-06 22:07:12,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:12,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:12,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:12,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:12,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:12,153 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:07:12 BoogieIcfgContainer [2023-11-06 22:07:12,153 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:07:12,154 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:07:12,154 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:07:12,155 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:07:12,156 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:11" (3/4) ... [2023-11-06 22:07:12,158 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 22:07:12,206 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:07:12,206 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:07:12,209 INFO L158 Benchmark]: Toolchain (without parser) took 1051.84ms. Allocated memory was 138.4MB in the beginning and 203.4MB in the end (delta: 65.0MB). Free memory was 85.2MB in the beginning and 159.7MB in the end (delta: -74.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:12,209 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 138.4MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:12,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.37ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 75.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:07:12,218 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.03ms. Allocated memory is still 138.4MB. Free memory was 75.5MB in the beginning and 74.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:07:12,219 INFO L158 Benchmark]: Boogie Preprocessor took 20.75ms. Allocated memory is still 138.4MB. Free memory was 74.4MB in the beginning and 73.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:12,219 INFO L158 Benchmark]: RCFGBuilder took 284.68ms. Allocated memory was 138.4MB in the beginning and 203.4MB in the end (delta: 65.0MB). Free memory was 73.3MB in the beginning and 172.1MB in the end (delta: -98.8MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-11-06 22:07:12,220 INFO L158 Benchmark]: BuchiAutomizer took 411.64ms. Allocated memory is still 203.4MB. Free memory was 171.9MB in the beginning and 160.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2023-11-06 22:07:12,224 INFO L158 Benchmark]: Witness Printer took 52.42ms. Allocated memory is still 203.4MB. Free memory was 160.9MB in the beginning and 159.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:12,232 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 138.4MB. Free memory is still 76.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.37ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 75.7MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.03ms. Allocated memory is still 138.4MB. Free memory was 75.5MB in the beginning and 74.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.75ms. Allocated memory is still 138.4MB. Free memory was 74.4MB in the beginning and 73.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 284.68ms. Allocated memory was 138.4MB in the beginning and 203.4MB in the end (delta: 65.0MB). Free memory was 73.3MB in the beginning and 172.1MB in the end (delta: -98.8MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * BuchiAutomizer took 411.64ms. Allocated memory is still 203.4MB. Free memory was 171.9MB in the beginning and 160.9MB in the end (delta: 11.0MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Witness Printer took 52.42ms. Allocated memory is still 203.4MB. Free memory was 160.9MB in the beginning and 159.7MB in the end (delta: 1.3MB). There was no memory consumed. 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 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: 17]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() Loop: [L17] COND TRUE x <= 10 [L18] COND FALSE !(x > 6) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 17]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int x; [L16] x = __VERIFIER_nondet_int() Loop: [L17] COND TRUE x <= 10 [L18] COND FALSE !(x > 6) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:07:12,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_940e5507-2eea-411e-8ad9-18a55cd257a2/bin/uautomizer-verify-WvqO1wxjHP/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)