./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/bh2017-ex-add.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/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_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/bh2017-ex-add.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/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 32bit --witnessprinter.graph.data.programhash 9067bcd66b4865bfb6aa4fb5c23797c879c2b81c36d918479d6650dc5a4b5edc --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:59:43,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:59:43,982 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-06 22:59:43,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:59:43,992 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:59:44,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:59:44,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:59:44,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:59:44,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:59:44,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:59:44,041 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:59:44,042 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:59:44,042 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:59:44,043 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:59:44,043 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:59:44,044 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:59:44,045 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:59:44,045 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:59:44,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:59:44,046 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:59:44,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:59:44,047 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:59:44,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:59:44,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:59:44,048 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:59:44,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:59:44,049 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:59:44,050 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:59:44,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:59:44,051 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:59:44,051 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:59:44,051 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:59:44,052 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:59:44,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:59:44,052 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:59:44,053 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:59:44,053 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_bded5568-93f1-42fd-9411-b9e43935f54b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9067bcd66b4865bfb6aa4fb5c23797c879c2b81c36d918479d6650dc5a4b5edc [2023-11-06 22:59:44,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:59:44,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:59:44,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:59:44,465 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:59:44,466 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:59:44,467 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/loop-lit/bh2017-ex-add.i [2023-11-06 22:59:47,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:59:48,004 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:59:48,005 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/sv-benchmarks/c/loop-lit/bh2017-ex-add.i [2023-11-06 22:59:48,012 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/data/af252c18d/7771bce428eb4499b2e9e8a980684eca/FLAGd18e03e32 [2023-11-06 22:59:48,029 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/data/af252c18d/7771bce428eb4499b2e9e8a980684eca [2023-11-06 22:59:48,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:59:48,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:59:48,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:59:48,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:59:48,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:59:48,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48fe92e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48, skipping insertion in model container [2023-11-06 22:59:48,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,079 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:59:48,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:59:48,263 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:59:48,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:59:48,298 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:59:48,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48 WrapperNode [2023-11-06 22:59:48,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:59:48,301 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:59:48,301 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:59:48,301 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:59:48,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,319 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,339 INFO L138 Inliner]: procedures = 15, calls = 11, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 78 [2023-11-06 22:59:48,340 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:59:48,341 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:59:48,341 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:59:48,341 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:59:48,353 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:59:48,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:59:48,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:59:48,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:59:48,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (1/1) ... [2023-11-06 22:59:48,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:59:48,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:59:48,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:59:48,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:59:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:59:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:59:48,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:59:48,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:59:48,526 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:59:48,528 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:59:48,779 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:59:48,788 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:59:48,788 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:59:48,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:59:48 BoogieIcfgContainer [2023-11-06 22:59:48,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:59:48,793 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:59:48,793 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:59:48,798 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:59:48,799 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:59:48,799 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:59:48" (1/3) ... [2023-11-06 22:59:48,800 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4fa44adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:59:48, skipping insertion in model container [2023-11-06 22:59:48,801 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:59:48,801 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:59:48" (2/3) ... [2023-11-06 22:59:48,802 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4fa44adf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:59:48, skipping insertion in model container [2023-11-06 22:59:48,802 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:59:48,802 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:59:48" (3/3) ... [2023-11-06 22:59:48,804 INFO L332 chiAutomizerObserver]: Analyzing ICFG bh2017-ex-add.i [2023-11-06 22:59:48,869 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:59:48,869 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:59:48,869 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:59:48,869 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:59:48,870 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:59:48,870 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:59:48,870 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:59:48,870 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:59:48,875 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 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 22:59:48,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2023-11-06 22:59:48,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:59:48,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:59:48,914 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:59:48,914 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:59:48,915 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:59:48,915 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 33 states have internal predecessors, (49), 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 22:59:48,923 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2023-11-06 22:59:48,924 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:59:48,924 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:59:48,925 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:59:48,926 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:59:48,937 INFO L748 eck$LassoCheckResult]: Stem: 33#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2); 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet4#1, main_#t~nondet5#1, main_#t~post6#1, main_~m~0#1, main_~n~0#1;main_~m~0#1 := 0;main_~n~0#1 := 0; 4#L32-1true [2023-11-06 22:59:48,938 INFO L750 eck$LassoCheckResult]: Loop: 4#L32-1true assume !false;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~m~0#1 <= 60 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 13#L13true assume !(0 == __VERIFIER_assert_~cond#1); 6#L13-3true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~n~0#1 <= 60 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 34#L13-4true assume !(0 == __VERIFIER_assert_~cond#1); 10#L13-7true havoc __VERIFIER_assert_~cond#1;havoc __VERIFIER_assert_#in~cond#1;assume { :end_inline___VERIFIER_assert } true;havoc main_#t~nondet1#1; 31#L21true assume !(0 != main_#t~nondet1#1 % 256);havoc main_#t~nondet1#1; 20#L21-1true havoc main_#t~nondet4#1; 26#L32true assume !(0 != main_#t~nondet4#1 % 256);havoc main_#t~nondet4#1; 4#L32-1true [2023-11-06 22:59:48,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 22:59:48,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:48,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800882097] [2023-11-06 22:59:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:48,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:59:49,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:59:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:59:49,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:59:49,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1708553599, now seen corresponding path program 1 times [2023-11-06 22:59:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138222001] [2023-11-06 22:59:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:59:49,109 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:59:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:59:49,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:59:49,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:59:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1895852223, now seen corresponding path program 1 times [2023-11-06 22:59:49,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:59:49,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751999419] [2023-11-06 22:59:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:59:49,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:59:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:59:49,150 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:59:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:59:49,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:59:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:59:49,575 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:59:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:59:49,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:59:49 BoogieIcfgContainer [2023-11-06 22:59:49,605 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:59:49,606 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:59:49,606 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:59:49,607 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:59:49,607 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:59:48" (3/4) ... [2023-11-06 22:59:49,609 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 22:59:49,650 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:59:49,650 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:59:49,652 INFO L158 Benchmark]: Toolchain (without parser) took 1617.60ms. Allocated memory is still 148.9MB. Free memory was 109.8MB in the beginning and 114.8MB in the end (delta: -5.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:59:49,653 INFO L158 Benchmark]: CDTParser took 0.92ms. Allocated memory is still 115.3MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:59:49,653 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.02ms. Allocated memory is still 148.9MB. Free memory was 109.3MB in the beginning and 99.3MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:59:49,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.44ms. Allocated memory is still 148.9MB. Free memory was 99.3MB in the beginning and 97.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:59:49,655 INFO L158 Benchmark]: Boogie Preprocessor took 29.50ms. Allocated memory is still 148.9MB. Free memory was 97.7MB in the beginning and 96.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:59:49,656 INFO L158 Benchmark]: RCFGBuilder took 420.75ms. Allocated memory is still 148.9MB. Free memory was 96.7MB in the beginning and 86.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:59:49,657 INFO L158 Benchmark]: BuchiAutomizer took 812.31ms. Allocated memory is still 148.9MB. Free memory was 85.7MB in the beginning and 116.8MB in the end (delta: -31.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:59:49,657 INFO L158 Benchmark]: Witness Printer took 44.38ms. Allocated memory is still 148.9MB. Free memory was 116.8MB in the beginning and 114.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:59:49,661 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.92ms. Allocated memory is still 115.3MB. Free memory is still 67.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.02ms. Allocated memory is still 148.9MB. Free memory was 109.3MB in the beginning and 99.3MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.44ms. Allocated memory is still 148.9MB. Free memory was 99.3MB in the beginning and 97.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.50ms. Allocated memory is still 148.9MB. Free memory was 97.7MB in the beginning and 96.7MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 420.75ms. Allocated memory is still 148.9MB. Free memory was 96.7MB in the beginning and 86.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 812.31ms. Allocated memory is still 148.9MB. Free memory was 85.7MB in the beginning and 116.8MB in the end (delta: -31.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.38ms. Allocated memory is still 148.9MB. Free memory was 116.8MB in the beginning and 114.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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: 1]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L16] int m = 0; [L17] int n = 0; VAL [m=0, n=0] Loop: [L18] COND TRUE 1 [L19] CALL __VERIFIER_assert(m <= 60) [L13] COND FALSE !(!(cond)) [L19] RET __VERIFIER_assert(m <= 60) [L20] CALL __VERIFIER_assert(n <= 60) [L13] COND FALSE !(!(cond)) [L20] RET __VERIFIER_assert(n <= 60) [L21] COND FALSE !(__VERIFIER_nondet_bool()) [L32] COND FALSE !(__VERIFIER_nondet_bool()) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 1]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L16] int m = 0; [L17] int n = 0; VAL [m=0, n=0] Loop: [L18] COND TRUE 1 [L19] CALL __VERIFIER_assert(m <= 60) [L13] COND FALSE !(!(cond)) [L19] RET __VERIFIER_assert(m <= 60) [L20] CALL __VERIFIER_assert(n <= 60) [L13] COND FALSE !(!(cond)) [L20] RET __VERIFIER_assert(n <= 60) [L21] COND FALSE !(__VERIFIER_nondet_bool()) [L32] COND FALSE !(__VERIFIER_nondet_bool()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:59:49,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bded5568-93f1-42fd-9411-b9e43935f54b/bin/uautomizer-verify-WvqO1wxjHP/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)