./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Loop-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/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_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Loop-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 42637c171db16e9b30ddb9b81ced3fc8afebc727d3cebc25aef685f9a2d7301b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:02:18,578 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:02:18,698 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 23:02:18,710 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:02:18,711 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:02:18,751 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:02:18,753 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:02:18,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:02:18,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:02:18,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:02:18,763 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:02:18,764 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 23:02:18,764 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 23:02:18,766 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 23:02:18,766 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 23:02:18,767 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 23:02:18,767 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 23:02:18,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:02:18,769 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 23:02:18,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:02:18,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:02:18,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 23:02:18,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 23:02:18,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 23:02:18,772 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:02:18,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:02:18,772 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 23:02:18,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:02:18,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:02:18,774 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:02:18,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:02:18,776 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:02:18,776 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 23:02:18,777 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_66394b27-ff30-4556-9bdc-b2dd661038ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42637c171db16e9b30ddb9b81ced3fc8afebc727d3cebc25aef685f9a2d7301b [2023-11-06 23:02:19,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:02:19,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:02:19,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:02:19,127 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:02:19,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:02:19,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-restricted-15/Loop-2.c [2023-11-06 23:02:22,190 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:02:22,395 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:02:22,395 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/sv-benchmarks/c/termination-restricted-15/Loop-2.c [2023-11-06 23:02:22,403 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/data/b83f753ac/6c1b5e75f1574d8fbacc27aca8738a45/FLAG82ef4626c [2023-11-06 23:02:22,422 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/data/b83f753ac/6c1b5e75f1574d8fbacc27aca8738a45 [2023-11-06 23:02:22,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:02:22,431 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:02:22,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:22,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:02:22,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:02:22,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1457e0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22, skipping insertion in model container [2023-11-06 23:02:22,444 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,463 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:02:22,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:22,653 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:02:22,665 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:02:22,679 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:02:22,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22 WrapperNode [2023-11-06 23:02:22,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:02:22,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:22,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:02:22,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:02:22,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,713 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 15 [2023-11-06 23:02:22,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:02:22,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:02:22,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:02:22,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:02:22,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,729 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,738 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,740 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:02:22,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:02:22,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:02:22,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:02:22,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (1/1) ... [2023-11-06 23:02:22,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:02:22,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:22,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:02:22,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 23:02:22,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:02:22,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:02:22,901 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:02:22,903 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:02:22,947 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:02:22,951 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:02:22,952 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:02:22,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:22 BoogieIcfgContainer [2023-11-06 23:02:22,954 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:02:22,955 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 23:02:22,955 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 23:02:22,959 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 23:02:22,960 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:02:22,960 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 11:02:22" (1/3) ... [2023-11-06 23:02:22,961 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79c70390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:02:22, skipping insertion in model container [2023-11-06 23:02:22,961 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:02:22,962 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:02:22" (2/3) ... [2023-11-06 23:02:22,962 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@79c70390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:02:22, skipping insertion in model container [2023-11-06 23:02:22,962 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:02:22,962 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:22" (3/3) ... [2023-11-06 23:02:22,966 INFO L332 chiAutomizerObserver]: Analyzing ICFG Loop-2.c [2023-11-06 23:02:23,028 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 23:02:23,029 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 23:02:23,029 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 23:02:23,029 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 23:02:23,029 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 23:02:23,030 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 23:02:23,030 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 23:02:23,030 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 23:02:23,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 23:02:23,052 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 23:02:23,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:02:23,053 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:02:23,058 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:02:23,059 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-06 23:02:23,059 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 23:02:23,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 23:02:23,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-06 23:02:23,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:02:23,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:02:23,061 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:02:23,061 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-06 23:02:23,069 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~a~0#1, main_~b~0#1, main_~i~0#1;havoc main_~a~0#1;havoc main_~b~0#1;havoc main_~i~0#1;main_~a~0#1 := 5;main_~b~0#1 := 3;main_~i~0#1 := 0; 4#L13-2true [2023-11-06 23:02:23,070 INFO L750 eck$LassoCheckResult]: Loop: 4#L13-2true assume !!(main_~i~0#1 < 10);main_~i~0#1 := main_~i~0#1; 4#L13-2true [2023-11-06 23:02:23,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 23:02:23,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:23,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885517936] [2023-11-06 23:02:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:23,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:23,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:02:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:23,194 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:02:23,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:23,197 INFO L85 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2023-11-06 23:02:23,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:23,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492952274] [2023-11-06 23:02:23,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:23,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:02:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:23,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:02:23,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:23,215 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-06 23:02:23,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:23,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243878455] [2023-11-06 23:02:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:23,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:23,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:02:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:23,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:02:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:23,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:02:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:02:23,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 11:02:23 BoogieIcfgContainer [2023-11-06 23:02:23,369 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 23:02:23,370 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:02:23,370 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:02:23,370 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:02:23,371 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:02:22" (3/4) ... [2023-11-06 23:02:23,372 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 23:02:23,419 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:02:23,419 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:02:23,422 INFO L158 Benchmark]: Toolchain (without parser) took 990.76ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 75.5MB in the end (delta: 39.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2023-11-06 23:02:23,423 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 127.9MB. Free memory was 73.9MB in the beginning and 73.8MB in the end (delta: 119.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:02:23,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.32ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 105.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 23:02:23,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.71ms. Allocated memory is still 161.5MB. Free memory was 105.4MB in the beginning and 104.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:02:23,427 INFO L158 Benchmark]: Boogie Preprocessor took 26.87ms. Allocated memory is still 161.5MB. Free memory was 104.0MB in the beginning and 103.3MB in the end (delta: 713.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:02:23,428 INFO L158 Benchmark]: RCFGBuilder took 211.25ms. Allocated memory is still 161.5MB. Free memory was 102.6MB in the beginning and 95.0MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 23:02:23,431 INFO L158 Benchmark]: BuchiAutomizer took 414.15ms. Allocated memory is still 161.5MB. Free memory was 94.3MB in the beginning and 77.4MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 23:02:23,432 INFO L158 Benchmark]: Witness Printer took 50.74ms. Allocated memory is still 161.5MB. Free memory was 76.8MB in the beginning and 75.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:02:23,435 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 127.9MB. Free memory was 73.9MB in the beginning and 73.8MB in the end (delta: 119.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.32ms. Allocated memory is still 161.5MB. Free memory was 114.5MB in the beginning and 105.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.71ms. Allocated memory is still 161.5MB. Free memory was 105.4MB in the beginning and 104.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.87ms. Allocated memory is still 161.5MB. Free memory was 104.0MB in the beginning and 103.3MB in the end (delta: 713.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 211.25ms. Allocated memory is still 161.5MB. Free memory was 102.6MB in the beginning and 95.0MB in the end (delta: 7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 414.15ms. Allocated memory is still 161.5MB. Free memory was 94.3MB in the beginning and 77.4MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 50.74ms. Allocated memory is still 161.5MB. Free memory was 76.8MB in the beginning and 75.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int a; [L7] int b; [L8] int i; [L9] a = 5 [L10] b = 3 [L11] i = 0 VAL [a=5, b=3, i=0] Loop: [L13] COND TRUE i < 10 [L13] i = i + 0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int a; [L7] int b; [L8] int i; [L9] a = 5 [L10] b = 3 [L11] i = 0 VAL [a=5, b=3, i=0] Loop: [L13] COND TRUE i < 10 [L13] i = i + 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 23:02:23,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66394b27-ff30-4556-9bdc-b2dd661038ed/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)