./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/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_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/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_4088e96e-1a4a-4d16-ae2b-6078536c6b40/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 2a8c97e87f793b5839cb424b8cc5fefc3a9d4b8a56c80aade72a0ae572eae02d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:15:28,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:15:28,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 21:15:28,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:15:28,690 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:15:28,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:15:28,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:15:28,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:15:28,722 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:15:28,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:15:28,724 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:15:28,724 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 21:15:28,725 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 21:15:28,726 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 21:15:28,726 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 21:15:28,727 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 21:15:28,727 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 21:15:28,728 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:15:28,729 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 21:15:28,729 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:15:28,730 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:15:28,731 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 21:15:28,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 21:15:28,732 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 21:15:28,733 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:15:28,733 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:15:28,734 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 21:15:28,735 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:15:28,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:15:28,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:15:28,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:15:28,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:15:28,738 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 21:15:28,739 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_4088e96e-1a4a-4d16-ae2b-6078536c6b40/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a8c97e87f793b5839cb424b8cc5fefc3a9d4b8a56c80aade72a0ae572eae02d [2023-11-06 21:15:29,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:15:29,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:15:29,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:15:29,079 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:15:29,080 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:15:29,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2023-11-06 21:15:32,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:15:32,481 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:15:32,482 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/sv-benchmarks/c/termination-crafted-lit/LeikeHeizmann-TACAS2014-Ex9.c [2023-11-06 21:15:32,489 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/data/abd49d3cf/d8b6e379fd934b9baa1af5c38fe28c80/FLAG117528e95 [2023-11-06 21:15:32,505 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/data/abd49d3cf/d8b6e379fd934b9baa1af5c38fe28c80 [2023-11-06 21:15:32,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:15:32,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:15:32,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:15:32,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:15:32,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:15:32,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748f0059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32, skipping insertion in model container [2023-11-06 21:15:32,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:15:32,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:15:32,771 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:15:32,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:15:32,816 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:15:32,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32 WrapperNode [2023-11-06 21:15:32,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:15:32,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:15:32,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:15:32,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:15:32,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,831 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,848 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-11-06 21:15:32,849 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:15:32,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:15:32,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:15:32,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:15:32,859 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,859 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,868 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,869 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:15:32,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:15:32,872 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:15:32,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:15:32,873 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (1/1) ... [2023-11-06 21:15:32,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:32,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:32,919 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:32,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 21:15:32,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:15:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:15:33,058 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:15:33,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:15:33,149 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:15:33,156 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:15:33,156 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:15:33,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:33 BoogieIcfgContainer [2023-11-06 21:15:33,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:15:33,160 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 21:15:33,160 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 21:15:33,174 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 21:15:33,175 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:15:33,175 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 09:15:32" (1/3) ... [2023-11-06 21:15:33,177 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@417d5bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 09:15:33, skipping insertion in model container [2023-11-06 21:15:33,177 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:15:33,177 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:15:32" (2/3) ... [2023-11-06 21:15:33,179 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@417d5bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 09:15:33, skipping insertion in model container [2023-11-06 21:15:33,180 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 21:15:33,180 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:33" (3/3) ... [2023-11-06 21:15:33,187 INFO L332 chiAutomizerObserver]: Analyzing ICFG LeikeHeizmann-TACAS2014-Ex9.c [2023-11-06 21:15:33,258 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 21:15:33,259 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 21:15:33,259 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 21:15:33,259 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 21:15:33,260 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 21:15:33,260 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 21:15:33,262 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 21:15:33,262 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 21:15:33,267 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) [2023-11-06 21:15:33,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 21:15:33,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:15:33,292 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:15:33,298 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 21:15:33,298 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 21:15:33,298 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 21:15:33,299 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) [2023-11-06 21:15:33,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 21:15:33,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:15:33,301 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:15:33,301 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 21:15:33,301 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 21:15:33,309 INFO L748 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 8#L21-2true [2023-11-06 21:15:33,310 INFO L750 eck$LassoCheckResult]: Loop: 8#L21-2true assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 3#L18true assume main_~q~0#1 < main_~p~0#1;main_~q~0#1 := main_~q~0#1 - 1; 8#L21-2true [2023-11-06 21:15:33,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:33,319 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 21:15:33,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:33,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887195258] [2023-11-06 21:15:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:33,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:33,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:33,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:33,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2023-11-06 21:15:33,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:33,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547979190] [2023-11-06 21:15:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:33,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:33,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:33,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:33,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:33,541 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-06 21:15:33,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:33,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537404631] [2023-11-06 21:15:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:33,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:33,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:33,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:33,737 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:33,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:33,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:33,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:33,738 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 21:15:33,739 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:33,739 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:33,739 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:33,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2023-11-06 21:15:33,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:33,740 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:33,761 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:33,778 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:33,784 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:33,879 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:33,880 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 21:15:33,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:33,890 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:33,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:33,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:33,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 21:15:33,929 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 21:15:33,929 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 21:15:33,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:33,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:33,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:33,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:33,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:33,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:33,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 21:15:33,994 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 21:15:33,994 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 21:15:34,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:34,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 21:15:34,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:34,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:34,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:34,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 21:15:34,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 21:15:34,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:34,098 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 21:15:34,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:34,108 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:34,108 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:34,108 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:34,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:34,109 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 21:15:34,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:34,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:34,109 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration1_Loop [2023-11-06 21:15:34,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:34,109 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:34,112 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:34,116 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:34,121 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:34,173 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:34,178 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 21:15:34,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,195 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 21:15:34,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:34,209 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:34,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:34,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:34,214 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 21:15:34,214 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 21:15:34,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 21:15:34,228 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:15:34,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:34,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,255 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 21:15:34,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:34,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:34,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:34,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:34,273 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 21:15:34,274 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 21:15:34,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 21:15:34,293 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:15:34,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:34,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,305 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,314 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 21:15:34,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:34,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:15:34,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:34,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:34,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:34,331 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:15:34,331 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:15:34,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 21:15:34,345 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 21:15:34,351 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-06 21:15:34,352 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 21:15:34,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,380 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 21:15:34,383 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 21:15:34,383 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 21:15:34,383 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 21:15:34,383 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~q~0#1) = 1*ULTIMATE.start_main_~q~0#1 Supporting invariants [] [2023-11-06 21:15:34,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-06 21:15:34,397 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 21:15:34,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:34,429 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:34,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:34,444 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:15:34,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:34,512 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-06 21:15:34,514 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 21:15:34,605 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) Result 25 states and 35 transitions. Complement of second has 8 states. [2023-11-06 21:15:34,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-06 21:15:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 21:15:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2023-11-06 21:15:34,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-06 21:15:34,616 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:34,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-06 21:15:34,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:34,617 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-06 21:15:34,617 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:34,618 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2023-11-06 21:15:34,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 21:15:34,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 11 states and 16 transitions. [2023-11-06 21:15:34,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-06 21:15:34,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-06 21:15:34,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2023-11-06 21:15:34,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 21:15:34,628 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2023-11-06 21:15:34,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2023-11-06 21:15:34,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2023-11-06 21:15:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 states have internal predecessors, (15), 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 21:15:34,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2023-11-06 21:15:34,655 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 15 transitions. [2023-11-06 21:15:34,655 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2023-11-06 21:15:34,655 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 21:15:34,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2023-11-06 21:15:34,656 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 21:15:34,656 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:15:34,656 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:15:34,657 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 21:15:34,657 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 21:15:34,657 INFO L748 eck$LassoCheckResult]: Stem: 80#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 81#L-1 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_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 82#L21-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 73#L18 [2023-11-06 21:15:34,657 INFO L750 eck$LassoCheckResult]: Loop: 73#L18 assume !(main_~q~0#1 < main_~p~0#1); 74#L21 assume main_~p~0#1 < main_~q~0#1;main_~p~0#1 := main_~p~0#1 - 1; 78#L21-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 73#L18 [2023-11-06 21:15:34,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:34,658 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-06 21:15:34,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:34,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869027622] [2023-11-06 21:15:34,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:34,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:34,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:34,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:34,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:34,668 INFO L85 PathProgramCache]: Analyzing trace with hash 45767, now seen corresponding path program 1 times [2023-11-06 21:15:34,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:34,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820358394] [2023-11-06 21:15:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:34,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:34,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:34,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:34,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:34,683 INFO L85 PathProgramCache]: Analyzing trace with hash 889694400, now seen corresponding path program 1 times [2023-11-06 21:15:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:34,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488979231] [2023-11-06 21:15:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:34,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:34,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:34,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:34,731 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:34,732 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:34,732 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:34,732 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:34,732 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 21:15:34,732 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:34,733 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:34,733 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2023-11-06 21:15:34,733 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:34,733 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:34,735 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:34,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:34,742 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:34,788 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:34,788 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 21:15:34,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 21:15:34,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:34,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:34,837 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 21:15:34,838 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 21:15:34,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:34,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,854 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 21:15:34,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:34,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:34,882 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 21:15:34,882 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 21:15:34,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:34,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,902 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 21:15:34,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:34,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 21:15:34,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:34,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:34,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:34,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:34,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 21:15:34,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 21:15:34,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 21:15:35,055 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 21:15:35,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:35,059 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 21:15:35,060 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 21:15:35,060 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 21:15:35,060 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 21:15:35,060 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 21:15:35,060 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:35,060 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 21:15:35,060 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 21:15:35,060 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeikeHeizmann-TACAS2014-Ex9.c_Iteration2_Loop [2023-11-06 21:15:35,060 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 21:15:35,061 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 21:15:35,062 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:35,066 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:35,075 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 21:15:35,129 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 21:15:35,129 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 21:15:35,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:35,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:35,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:35,143 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 21:15:35,155 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:35,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:35,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:35,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:35,159 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 21:15:35,159 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 21:15:35,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 21:15:35,171 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:15:35,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:35,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:35,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:35,176 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:35,185 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 21:15:35,197 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:35,198 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:35,198 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:35,198 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:35,201 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 21:15:35,201 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 21:15:35,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 21:15:35,213 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 21:15:35,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:35,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:35,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:35,219 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:35,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 21:15:35,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 21:15:35,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 21:15:35,245 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 21:15:35,245 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 21:15:35,245 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 21:15:35,245 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 21:15:35,247 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 21:15:35,247 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 21:15:35,256 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 21:15:35,260 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 21:15:35,260 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 21:15:35,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 21:15:35,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:15:35,264 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 21:15:35,271 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 21:15:35,271 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 21:15:35,271 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 21:15:35,271 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~p~0#1) = 1*ULTIMATE.start_main_~p~0#1 Supporting invariants [] [2023-11-06 21:15:35,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 21:15:35,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:35,279 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 21:15:35,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:35,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 21:15:35,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:35,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 21:15:35,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:15:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:35,351 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-06 21:15:35,352 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 21:15:35,378 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) Result 26 states and 39 transitions. Complement of second has 6 states. [2023-11-06 21:15:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-06 21:15:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 21:15:35,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-11-06 21:15:35,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 3 letters. [2023-11-06 21:15:35,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:35,381 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2023-11-06 21:15:35,381 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:35,382 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2023-11-06 21:15:35,382 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 21:15:35,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 39 transitions. [2023-11-06 21:15:35,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 21:15:35,385 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 36 transitions. [2023-11-06 21:15:35,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-06 21:15:35,386 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2023-11-06 21:15:35,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 36 transitions. [2023-11-06 21:15:35,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 21:15:35,386 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 36 transitions. [2023-11-06 21:15:35,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 36 transitions. [2023-11-06 21:15:35,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-11-06 21:15:35,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 22 states have internal predecessors, (35), 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 21:15:35,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2023-11-06 21:15:35,391 INFO L240 hiAutomatonCegarLoop]: Abstraction has 23 states and 35 transitions. [2023-11-06 21:15:35,391 INFO L428 stractBuchiCegarLoop]: Abstraction has 23 states and 35 transitions. [2023-11-06 21:15:35,391 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 21:15:35,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 35 transitions. [2023-11-06 21:15:35,392 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 21:15:35,392 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 21:15:35,392 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 21:15:35,393 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-06 21:15:35,393 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 21:15:35,393 INFO L748 eck$LassoCheckResult]: Stem: 157#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 158#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~p~0#1, main_~q~0#1;havoc main_~p~0#1;havoc main_~q~0#1;havoc main_#t~nondet0#1;main_~q~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~p~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 162#L21-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 168#L18 assume !(main_~q~0#1 < main_~p~0#1); 154#L21 [2023-11-06 21:15:35,394 INFO L750 eck$LassoCheckResult]: Loop: 154#L21 assume !(main_~p~0#1 < main_~q~0#1); 155#L21-2 assume !!((main_~q~0#1 > 0 && main_~p~0#1 > 0) && main_~p~0#1 != main_~q~0#1); 159#L18 assume !(main_~q~0#1 < main_~p~0#1); 154#L21 [2023-11-06 21:15:35,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-11-06 21:15:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:35,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861574633] [2023-11-06 21:15:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:35,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:35,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 21:15:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 21:15:35,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 21:15:35,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:15:35,405 INFO L85 PathProgramCache]: Analyzing trace with hash 50329, now seen corresponding path program 1 times [2023-11-06 21:15:35,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:15:35,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954102024] [2023-11-06 21:15:35,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:15:35,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:15:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:15:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:15:35,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:35,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:15:35,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 21:15:35,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954102024] [2023-11-06 21:15:35,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954102024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:15:35,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:15:35,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:15:35,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014493357] [2023-11-06 21:15:35,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:15:35,525 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 21:15:35,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:15:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:15:35,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:15:35,531 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. cyclomatic complexity: 16 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 21:15:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:15:35,551 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2023-11-06 21:15:35,551 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2023-11-06 21:15:35,553 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 21:15:35,553 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2023-11-06 21:15:35,553 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 21:15:35,553 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 21:15:35,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 21:15:35,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:15:35,553 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:15:35,553 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:15:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:15:35,555 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:15:35,555 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 21:15:35,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:15:35,555 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 21:15:35,555 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 21:15:35,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 09:15:35 BoogieIcfgContainer [2023-11-06 21:15:35,565 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 21:15:35,566 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:15:35,566 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:15:35,567 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:15:35,567 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:15:33" (3/4) ... [2023-11-06 21:15:35,570 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 21:15:35,571 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:15:35,572 INFO L158 Benchmark]: Toolchain (without parser) took 3062.48ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 71.2MB in the beginning and 134.2MB in the end (delta: -63.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:35,579 INFO L158 Benchmark]: CDTParser took 1.22ms. Allocated memory is still 134.2MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:35,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.18ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 71.0MB in the beginning and 142.0MB in the end (delta: -71.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-11-06 21:15:35,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.40ms. Allocated memory is still 169.9MB. Free memory was 142.0MB in the beginning and 140.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:15:35,581 INFO L158 Benchmark]: Boogie Preprocessor took 21.57ms. Allocated memory is still 169.9MB. Free memory was 140.7MB in the beginning and 139.9MB in the end (delta: 825.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:35,581 INFO L158 Benchmark]: RCFGBuilder took 286.34ms. Allocated memory is still 169.9MB. Free memory was 139.9MB in the beginning and 131.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 21:15:35,585 INFO L158 Benchmark]: BuchiAutomizer took 2406.06ms. Allocated memory is still 169.9MB. Free memory was 131.1MB in the beginning and 134.2MB in the end (delta: -3.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:35,588 INFO L158 Benchmark]: Witness Printer took 4.84ms. Allocated memory is still 169.9MB. Free memory is still 134.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:15:35,593 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22ms. Allocated memory is still 134.2MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.18ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 71.0MB in the beginning and 142.0MB in the end (delta: -71.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.40ms. Allocated memory is still 169.9MB. Free memory was 142.0MB in the beginning and 140.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.57ms. Allocated memory is still 169.9MB. Free memory was 140.7MB in the beginning and 139.9MB in the end (delta: 825.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 286.34ms. Allocated memory is still 169.9MB. Free memory was 139.9MB in the beginning and 131.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2406.06ms. Allocated memory is still 169.9MB. Free memory was 131.1MB in the beginning and 134.2MB in the end (delta: -3.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.84ms. Allocated memory is still 169.9MB. Free memory is still 134.2MB. 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 Your program was decomposed into 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function q and consists of 5 locations. One deterministic module has affine ranking function p and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.3s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations. 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 [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 16 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq139 hnf95 smp100 dnf100 smp100 tf110 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 49ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-06 21:15:35,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4088e96e-1a4a-4d16-ae2b-6078536c6b40/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 Result: TRUE