./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 0e0057cc 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_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/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_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme --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 c8c2842840d9df2fd19d5532fbc3700c74bea362cad75e31db6c666eb38ff4df --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:06:10,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:06:10,479 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-26 12:06:10,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:06:10,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:06:10,511 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:06:10,512 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:06:10,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:06:10,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:06:10,514 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:06:10,515 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:06:10,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:06:10,516 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:06:10,517 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 12:06:10,518 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 12:06:10,518 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 12:06:10,519 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 12:06:10,519 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 12:06:10,520 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 12:06:10,521 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:06:10,521 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 12:06:10,522 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:06:10,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:06:10,523 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 12:06:10,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 12:06:10,524 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 12:06:10,525 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:06:10,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:06:10,526 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 12:06:10,526 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:06:10,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:06:10,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:06:10,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:06:10,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:06:10,529 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 12:06:10,530 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_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8c2842840d9df2fd19d5532fbc3700c74bea362cad75e31db6c666eb38ff4df [2023-11-26 12:06:10,758 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:06:10,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:06:10,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:06:10,790 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:06:10,792 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:06:10,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2023-11-26 12:06:13,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:06:14,166 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:06:14,166 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/sv-benchmarks/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1-modified.c [2023-11-26 12:06:14,174 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/data/517dc4c8f/31de38afd5584fb99391cd58bc873fb2/FLAG0ef7858ba [2023-11-26 12:06:14,189 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/data/517dc4c8f/31de38afd5584fb99391cd58bc873fb2 [2023-11-26 12:06:14,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:06:14,194 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:06:14,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:14,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:06:14,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:06:14,207 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4b269c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14, skipping insertion in model container [2023-11-26 12:06:14,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:06:14,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:14,376 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:06:14,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:06:14,400 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:06:14,401 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14 WrapperNode [2023-11-26 12:06:14,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:06:14,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:14,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:06:14,403 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:06:14,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,433 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-11-26 12:06:14,433 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:06:14,434 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:06:14,435 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:06:14,435 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:06:14,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,447 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,453 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-26 12:06:14,453 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:06:14,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:06:14,464 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:06:14,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:06:14,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (1/1) ... [2023-11-26 12:06:14,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 12:06:14,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:06:14,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 12:06:14,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 12:06:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:06:14,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:06:14,616 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:06:14,618 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:06:14,719 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:06:14,731 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:06:14,731 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:06:14,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:14 BoogieIcfgContainer [2023-11-26 12:06:14,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:06:14,734 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 12:06:14,734 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 12:06:14,738 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 12:06:14,739 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 12:06:14,739 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 12:06:14" (1/3) ... [2023-11-26 12:06:14,740 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35706931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 12:06:14, skipping insertion in model container [2023-11-26 12:06:14,740 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 12:06:14,740 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:06:14" (2/3) ... [2023-11-26 12:06:14,741 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35706931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 12:06:14, skipping insertion in model container [2023-11-26 12:06:14,741 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 12:06:14,741 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:14" (3/3) ... [2023-11-26 12:06:14,742 INFO L332 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1-modified.c [2023-11-26 12:06:14,794 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 12:06:14,794 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 12:06:14,795 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 12:06:14,795 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 12:06:14,795 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 12:06:14,795 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 12:06:14,795 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 12:06:14,795 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 12:06:14,799 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) [2023-11-26 12:06:14,814 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-26 12:06:14,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 12:06:14,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 12:06:14,819 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 12:06:14,819 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-26 12:06:14,820 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 12:06:14,820 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) [2023-11-26 12:06:14,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-26 12:06:14,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 12:06:14,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 12:06:14,822 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 12:06:14,822 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-26 12:06:14,828 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~y1~0#1, main_~y2~0#1;havoc main_~y1~0#1;havoc main_~y2~0#1;havoc main_#t~nondet0#1;main_~y1~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y2~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 9#L20true assume main_~y1~0#1 >= 0 && main_~y2~0#1 >= 0; 8#L22-2true [2023-11-26 12:06:14,829 INFO L750 eck$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 [2023-11-26 12:06:14,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:14,834 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-26 12:06:14,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:14,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403386307] [2023-11-26 12:06:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:06:14,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:06:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:06:14,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:06:14,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:14,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1412, now seen corresponding path program 1 times [2023-11-26 12:06:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884898734] [2023-11-26 12:06:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:14,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:06:14,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:06:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:06:14,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:06:14,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:06:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 28693989, now seen corresponding path program 1 times [2023-11-26 12:06:14,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:06:14,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627510988] [2023-11-26 12:06:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:06:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:06:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:06:14,981 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:06:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:06:14,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 12:06:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:06:15,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 12:06:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 12:06:15,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 12:06:15 BoogieIcfgContainer [2023-11-26 12:06:15,199 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 12:06:15,200 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:06:15,200 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:06:15,201 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:06:15,202 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:06:14" (3/4) ... [2023-11-26 12:06:15,204 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 12:06:15,258 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:06:15,258 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:06:15,261 INFO L158 Benchmark]: Toolchain (without parser) took 1065.36ms. Allocated memory is still 136.3MB. Free memory was 106.8MB in the beginning and 65.9MB in the end (delta: 40.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-26 12:06:15,261 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:06:15,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.06ms. Allocated memory is still 136.3MB. Free memory was 106.3MB in the beginning and 97.3MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 12:06:15,263 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.37ms. Allocated memory is still 136.3MB. Free memory was 97.3MB in the beginning and 95.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:06:15,264 INFO L158 Benchmark]: Boogie Preprocessor took 28.73ms. Allocated memory is still 136.3MB. Free memory was 95.9MB in the beginning and 94.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:15,264 INFO L158 Benchmark]: RCFGBuilder took 268.95ms. Allocated memory is still 136.3MB. Free memory was 94.3MB in the beginning and 85.9MB in the end (delta: 8.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 12:06:15,266 INFO L158 Benchmark]: BuchiAutomizer took 465.78ms. Allocated memory is still 136.3MB. Free memory was 85.4MB in the beginning and 68.0MB in the end (delta: 17.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-26 12:06:15,266 INFO L158 Benchmark]: Witness Printer took 58.12ms. Allocated memory is still 136.3MB. Free memory was 67.5MB in the beginning and 65.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:06:15,270 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.06ms. Allocated memory is still 136.3MB. Free memory was 106.3MB in the beginning and 97.3MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.37ms. Allocated memory is still 136.3MB. Free memory was 97.3MB in the beginning and 95.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.73ms. Allocated memory is still 136.3MB. Free memory was 95.9MB in the beginning and 94.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 268.95ms. Allocated memory is still 136.3MB. Free memory was 94.3MB in the beginning and 85.9MB in the end (delta: 8.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 465.78ms. Allocated memory is still 136.3MB. Free memory was 85.4MB in the beginning and 68.0MB in the end (delta: 17.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 58.12ms. Allocated memory is still 136.3MB. Free memory was 67.5MB in the beginning and 65.9MB in the end (delta: 1.6MB). 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 0.3s 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! [2023-11-26 12:06:15,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0fd0c1f-6701-44eb-ae8c-3995abb65f28/bin/uautomizer-verify-VRDe98Ueme/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)