./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 d97ba8b69128e43b30f4e3953a96913f3683509f4de403028a4cfb023afba567 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:53:16,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:53:16,478 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-11-28 03:53:16,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:53:16,487 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:53:16,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:53:16,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:53:16,510 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:53:16,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:53:16,510 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:53:16,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:53:16,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:53:16,511 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:53:16,511 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-11-28 03:53:16,511 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-11-28 03:53:16,511 INFO L153 SettingsManager]: * Use old map elimination=false [2024-11-28 03:53:16,511 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-11-28 03:53:16,511 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-11-28 03:53:16,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:53:16,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:53:16,513 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-11-28 03:53:16,513 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:53:16,513 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:53:16,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:53:16,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:53:16,513 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:53:16,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL_NO_AM [2024-11-28 03:53:16,514 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-11-28 03:53:16,514 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> d97ba8b69128e43b30f4e3953a96913f3683509f4de403028a4cfb023afba567 [2024-11-28 03:53:16,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:53:16,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:53:16,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:53:16,827 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:53:16,828 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:53:16,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2024-11-28 03:53:19,741 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/data/674f8dcb4/b3c9393ac4ce41dfa6d738aaac93ec4a/FLAG9adbcd9ed [2024-11-28 03:53:20,022 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:53:20,023 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/sv-benchmarks/c/termination-crafted/Bangalore_v2.c [2024-11-28 03:53:20,040 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/data/674f8dcb4/b3c9393ac4ce41dfa6d738aaac93ec4a/FLAG9adbcd9ed [2024-11-28 03:53:20,092 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/data/674f8dcb4/b3c9393ac4ce41dfa6d738aaac93ec4a [2024-11-28 03:53:20,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:53:20,099 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:53:20,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:53:20,102 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:53:20,108 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:53:20,108 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c85473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20, skipping insertion in model container [2024-11-28 03:53:20,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,126 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:53:20,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:53:20,290 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:53:20,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:53:20,314 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:53:20,314 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20 WrapperNode [2024-11-28 03:53:20,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:53:20,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:53:20,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:53:20,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:53:20,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,333 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,344 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2024-11-28 03:53:20,345 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:53:20,345 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:53:20,346 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:53:20,346 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:53:20,354 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,360 INFO L175 MemorySlicer]: No memory access in input program. [2024-11-28 03:53:20,361 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,361 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,362 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:53:20,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:53:20,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:53:20,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:53:20,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (1/1) ... [2024-11-28 03:53:20,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-11-28 03:53:20,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:20,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-11-28 03:53:20,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-11-28 03:53:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:53:20,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:53:20,501 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:53:20,503 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:53:20,562 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-11-28 03:53:20,562 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:53:20,574 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:53:20,575 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 03:53:20,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:20 BoogieIcfgContainer [2024-11-28 03:53:20,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:53:20,577 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-11-28 03:53:20,577 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-11-28 03:53:20,583 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-11-28 03:53:20,583 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:53:20,583 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:53:20" (1/3) ... [2024-11-28 03:53:20,584 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@168a412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:53:20, skipping insertion in model container [2024-11-28 03:53:20,585 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:53:20,585 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:53:20" (2/3) ... [2024-11-28 03:53:20,585 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@168a412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:53:20, skipping insertion in model container [2024-11-28 03:53:20,585 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-11-28 03:53:20,585 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:20" (3/3) ... [2024-11-28 03:53:20,588 INFO L363 chiAutomizerObserver]: Analyzing ICFG Bangalore_v2.c [2024-11-28 03:53:20,650 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-11-28 03:53:20,651 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-11-28 03:53:20,651 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-11-28 03:53:20,651 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-11-28 03:53:20,651 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-11-28 03:53:20,651 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-11-28 03:53:20,651 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-11-28 03:53:20,651 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-11-28 03:53:20,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-28 03:53:20,671 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 03:53:20,672 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:53:20,672 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:53:20,677 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-28 03:53:20,677 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 03:53:20,677 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-11-28 03:53:20,678 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-11-28 03:53:20,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2024-11-28 03:53:20,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-11-28 03:53:20,679 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-11-28 03:53:20,679 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2024-11-28 03:53:20,679 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2024-11-28 03:53:20,686 INFO L747 eck$LassoCheckResult]: Stem: "assume { :begin_inline_ULTIMATE.init } true;" "assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;" "assume main_~y~0#1 >= 0;" [2024-11-28 03:53:20,686 INFO L749 eck$LassoCheckResult]: Loop: "assume main_~x~0#1 >= 0;" "main_~x~0#1 := main_~x~0#1 - main_~y~0#1;" [2024-11-28 03:53:20,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-11-28 03:53:20,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:20,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095547879] [2024-11-28 03:53:20,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:20,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:20,761 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:20,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:20,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1317, now seen corresponding path program 1 times [2024-11-28 03:53:20,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:20,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901579997] [2024-11-28 03:53:20,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:20,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:20,790 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:20,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:20,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:20,796 INFO L85 PathProgramCache]: Analyzing trace with hash 28693894, now seen corresponding path program 1 times [2024-11-28 03:53:20,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2024-11-28 03:53:20,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374288894] [2024-11-28 03:53:20,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:20,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:53:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:20,807 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:20,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2024-11-28 03:53:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:20,918 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 03:53:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 03:53:20,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:53:20 BoogieIcfgContainer [2024-11-28 03:53:20,953 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-11-28 03:53:20,953 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:53:20,953 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:53:20,954 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:53:20,954 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:53:20" (3/4) ... [2024-11-28 03:53:20,957 INFO L143 WitnessPrinter]: Generating witness for non-termination counterexample [2024-11-28 03:53:20,994 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:53:20,995 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:53:20,996 INFO L158 Benchmark]: Toolchain (without parser) took 896.53ms. Allocated memory is still 142.6MB. Free memory was 119.0MB in the beginning and 82.9MB in the end (delta: 36.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:53:20,998 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 142.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:53:20,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.34ms. Allocated memory is still 142.6MB. Free memory was 119.0MB in the beginning and 109.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:53:20,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.26ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 108.3MB in the end (delta: 751.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:53:20,999 INFO L158 Benchmark]: Boogie Preprocessor took 22.33ms. Allocated memory is still 142.6MB. Free memory was 108.3MB in the beginning and 107.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:53:21,000 INFO L158 Benchmark]: RCFGBuilder took 207.70ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 99.0MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:53:21,002 INFO L158 Benchmark]: BuchiAutomizer took 375.86ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 84.6MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:53:21,002 INFO L158 Benchmark]: Witness Printer took 41.60ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 82.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:53:21,004 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 142.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.34ms. Allocated memory is still 142.6MB. Free memory was 119.0MB in the beginning and 109.3MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.26ms. Allocated memory is still 142.6MB. Free memory was 109.0MB in the beginning and 108.3MB in the end (delta: 751.6kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.33ms. Allocated memory is still 142.6MB. Free memory was 108.3MB in the beginning and 107.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 207.70ms. Allocated memory is still 142.6MB. Free memory was 107.3MB in the beginning and 99.0MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 375.86ms. Allocated memory is still 142.6MB. Free memory was 99.0MB in the beginning and 84.6MB in the end (delta: 14.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 41.60ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 82.9MB in the end (delta: 1.8MB). 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 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: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE y >= 0 VAL [y=0] Loop: [L17] COND TRUE x >= 0 [L18] x = x - y 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: [L12] int x; [L13] int y; [L14] x = __VERIFIER_nondet_int() [L15] y = __VERIFIER_nondet_int() [L16] COND TRUE y >= 0 VAL [y=0] Loop: [L17] COND TRUE x >= 0 [L18] x = x - y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-11-28 03:53:21,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50a638a0-231e-4543-a134-9b57f16c6249/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)