./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.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_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/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_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/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_3c80ef2d-6f82-4b46-a126-458561e0a89e/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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:00:25,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:00:25,726 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 23:00:25,731 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:00:25,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:00:25,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:00:25,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:00:25,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:00:25,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:00:25,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:00:25,763 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:00:25,764 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 23:00:25,764 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 23:00:25,765 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 23:00:25,765 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 23:00:25,766 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 23:00:25,766 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 23:00:25,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:00:25,767 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 23:00:25,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:00:25,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:00:25,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 23:00:25,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 23:00:25,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 23:00:25,776 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:00:25,777 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:00:25,777 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 23:00:25,777 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:00:25,778 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:00:25,778 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:00:25,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:00:25,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:00:25,780 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 23:00:25,780 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_3c80ef2d-6f82-4b46-a126-458561e0a89e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2023-11-06 23:00:26,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:00:26,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:00:26,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:00:26,126 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:00:26,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:00:26,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-numeric/twisted.c [2023-11-06 23:00:29,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:00:29,520 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:00:29,521 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/sv-benchmarks/c/termination-numeric/twisted.c [2023-11-06 23:00:29,528 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/data/9b0c95126/ab5cc87f747b476d93b60fb364fbf521/FLAGf5678ddc7 [2023-11-06 23:00:29,544 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/data/9b0c95126/ab5cc87f747b476d93b60fb364fbf521 [2023-11-06 23:00:29,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:00:29,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:00:29,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:29,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:00:29,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:00:29,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435ca03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29, skipping insertion in model container [2023-11-06 23:00:29,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,613 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:00:29,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:29,794 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:00:29,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:29,824 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:00:29,824 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29 WrapperNode [2023-11-06 23:00:29,824 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:29,825 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:29,825 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:00:29,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:00:29,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,834 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,850 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-11-06 23:00:29,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:29,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:00:29,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:00:29,852 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:00:29,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,863 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,877 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:00:29,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:00:29,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:00:29,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:00:29,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (1/1) ... [2023-11-06 23:00:29,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:29,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:29,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:29,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 23:00:29,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:00:29,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:00:30,013 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:00:30,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:00:30,117 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:00:30,124 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:00:30,124 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 23:00:30,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:30 BoogieIcfgContainer [2023-11-06 23:00:30,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:00:30,128 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 23:00:30,128 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 23:00:30,132 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 23:00:30,133 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:00:30,133 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 11:00:29" (1/3) ... [2023-11-06 23:00:30,134 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34b9e08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:00:30, skipping insertion in model container [2023-11-06 23:00:30,135 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:00:30,135 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:29" (2/3) ... [2023-11-06 23:00:30,135 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34b9e08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:00:30, skipping insertion in model container [2023-11-06 23:00:30,136 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:00:30,136 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:30" (3/3) ... [2023-11-06 23:00:30,137 INFO L332 chiAutomizerObserver]: Analyzing ICFG twisted.c [2023-11-06 23:00:30,208 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 23:00:30,208 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 23:00:30,208 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 23:00:30,208 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 23:00:30,209 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 23:00:30,209 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 23:00:30,209 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 23:00:30,209 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 23:00:30,214 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:30,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-06 23:00:30,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:30,230 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:30,235 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:00:30,235 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 23:00:30,236 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 23:00:30,236 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:30,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-06 23:00:30,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:30,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:30,238 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:00:30,238 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-06 23:00:30,248 INFO L748 eck$LassoCheckResult]: Stem: 12#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 8#$Ultimate##3true [2023-11-06 23:00:30,249 INFO L750 eck$LassoCheckResult]: Loop: 8#$Ultimate##3true assume !true; 13#$Ultimate##10true goto; 9#$Ultimate##12true assume !!(f_~j~0#1 < f_~l#1);f_#t~post1#1 := f_~j~0#1;f_~j~0#1 := 1 + f_#t~post1#1;havoc f_#t~post1#1; 5#L15true assume !(0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2)); 8#$Ultimate##3true [2023-11-06 23:00:30,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:30,255 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 23:00:30,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:30,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227839661] [2023-11-06 23:00:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:30,353 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:30,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:30,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:30,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1481770, now seen corresponding path program 1 times [2023-11-06 23:00:30,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:30,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57819372] [2023-11-06 23:00:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:30,443 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 23:00:30,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:30,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57819372] [2023-11-06 23:00:30,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57819372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:30,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:30,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:00:30,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681451598] [2023-11-06 23:00:30,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:30,451 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-06 23:00:30,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:30,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:00:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:00:30,499 INFO L87 Difference]: Start difference. First operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 1 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 23:00:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:30,508 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2023-11-06 23:00:30,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2023-11-06 23:00:30,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-06 23:00:30,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 8 states and 11 transitions. [2023-11-06 23:00:30,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-06 23:00:30,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-06 23:00:30,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-11-06 23:00:30,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:30,521 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-06 23:00:30,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-11-06 23:00:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-06 23:00:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-11-06 23:00:30,550 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-06 23:00:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:00:30,561 INFO L428 stractBuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-06 23:00:30,562 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 23:00:30,562 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2023-11-06 23:00:30,563 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-06 23:00:30,563 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:30,564 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:30,564 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:00:30,564 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-06 23:00:30,565 INFO L748 eck$LassoCheckResult]: Stem: 39#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 40#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 41#$Ultimate##3 [2023-11-06 23:00:30,566 INFO L750 eck$LassoCheckResult]: Loop: 41#$Ultimate##3 goto; 36#$Ultimate##5 assume !(f_~i~0#1 < f_~k#1); 37#$Ultimate##10 goto; 34#$Ultimate##12 assume !!(f_~j~0#1 < f_~l#1);f_#t~post1#1 := f_~j~0#1;f_~j~0#1 := 1 + f_#t~post1#1;havoc f_#t~post1#1; 35#L15 assume !(0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2)); 41#$Ultimate##3 [2023-11-06 23:00:30,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-06 23:00:30,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:30,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219899930] [2023-11-06 23:00:30,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:30,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:30,586 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:30,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:30,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:30,594 INFO L85 PathProgramCache]: Analyzing trace with hash 34460407, now seen corresponding path program 1 times [2023-11-06 23:00:30,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:30,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571015615] [2023-11-06 23:00:30,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:30,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:30,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:30,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:30,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:30,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1805899893, now seen corresponding path program 1 times [2023-11-06 23:00:30,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:30,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467161231] [2023-11-06 23:00:30,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:30,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:30,635 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:30,647 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:30,731 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:30,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:30,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:30,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:30,738 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:00:30,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:30,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:30,738 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:30,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2023-11-06 23:00:30,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:30,739 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:30,756 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 23:00:30,774 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 23:00:30,778 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 23:00:30,879 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:30,880 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:00:30,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:30,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:30,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:30,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 23:00:30,888 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:30,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:30,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:30,916 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_~i~0#1=-4, ULTIMATE.start_f_~k#1=-4} Honda state: {ULTIMATE.start_f_~i~0#1=-4, ULTIMATE.start_f_~k#1=-4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:00:30,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:30,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:30,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:30,926 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:30,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:30,939 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:30,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 23:00:30,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:30,974 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post1#1=0} Honda state: {ULTIMATE.start_f_#t~post1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:00:30,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:30,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:30,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:31,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:31,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:31,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 23:00:31,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-06 23:00:31,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:31,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:31,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:31,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:00:31,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:31,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 23:00:31,223 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:00:31,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:31,228 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:31,228 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:31,228 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:31,228 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:31,229 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:00:31,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:31,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:31,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:31,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration2_Loop [2023-11-06 23:00:31,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:31,229 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:31,231 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 23:00:31,240 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 23:00:31,244 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 23:00:31,335 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:31,340 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:00:31,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:31,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:31,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:31,366 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 23:00:31,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 23:00:31,383 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:31,383 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:31,384 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:31,384 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:31,384 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:31,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:31,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:31,406 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:00:31,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:31,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:31,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:31,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:31,431 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 23:00:31,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:31,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:31,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:31,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:31,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:31,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:31,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:31,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 23:00:31,457 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:00:31,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:31,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:31,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:31,468 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:31,477 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 23:00:31,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:31,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:31,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:31,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:31,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:31,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:31,493 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:31,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 23:00:31,505 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:00:31,519 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:00:31,519 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 23:00:31,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:31,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:31,540 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:31,567 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:00:31,567 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:00:31,567 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:00:31,567 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~j~0#1, ULTIMATE.start_f_~l#1) = -1*ULTIMATE.start_f_~j~0#1 + 1*ULTIMATE.start_f_~l#1 Supporting invariants [] [2023-11-06 23:00:31,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 23:00:31,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:31,581 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:00:31,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:31,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:31,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:31,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:31,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:31,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:31,773 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 23:00:31,778 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 23:00:31,781 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:31,813 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 16 states and 23 transitions. Complement of second has 4 states. [2023-11-06 23:00:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:31,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2023-11-06 23:00:31,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 5 letters. [2023-11-06 23:00:31,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:31,818 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 5 letters. [2023-11-06 23:00:31,818 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:31,819 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 2 letters. Loop has 10 letters. [2023-11-06 23:00:31,819 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:31,820 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2023-11-06 23:00:31,822 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:31,822 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 13 states and 18 transitions. [2023-11-06 23:00:31,822 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-06 23:00:31,823 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-06 23:00:31,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 18 transitions. [2023-11-06 23:00:31,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:31,823 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 18 transitions. [2023-11-06 23:00:31,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 18 transitions. [2023-11-06 23:00:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-06 23:00:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2023-11-06 23:00:31,826 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-11-06 23:00:31,826 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2023-11-06 23:00:31,826 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 23:00:31,826 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2023-11-06 23:00:31,827 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:31,827 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:31,827 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:31,827 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 23:00:31,827 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:00:31,828 INFO L748 eck$LassoCheckResult]: Stem: 105#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 106#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet2#1, main_#t~nondet3#1, main_#t~ret4#1;havoc main_#t~nondet2#1;havoc main_#t~nondet3#1;assume { :begin_inline_f } true;f_#in~k#1, f_#in~l#1 := main_#t~nondet2#1, main_#t~nondet3#1;havoc f_#res#1;havoc f_#t~post0#1, f_#t~post1#1, f_~k#1, f_~l#1, f_~i~0#1, f_~j~0#1;f_~k#1 := f_#in~k#1;f_~l#1 := f_#in~l#1;f_~i~0#1 := 0;f_~j~0#1 := 0; 109#$Ultimate##3 goto; 100#$Ultimate##5 [2023-11-06 23:00:31,828 INFO L750 eck$LassoCheckResult]: Loop: 100#$Ultimate##5 assume !!(f_~i~0#1 < f_~k#1);f_#t~post0#1 := f_~i~0#1;f_~i~0#1 := 1 + f_#t~post0#1;havoc f_#t~post0#1; 101#L8 assume 0 != (if f_~i~0#1 < 0 && 0 != f_~i~0#1 % 2 then f_~i~0#1 % 2 - 2 else f_~i~0#1 % 2); 100#$Ultimate##5 [2023-11-06 23:00:31,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash 29859, now seen corresponding path program 1 times [2023-11-06 23:00:31,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:31,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823790724] [2023-11-06 23:00:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:31,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:31,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:31,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:31,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:31,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2023-11-06 23:00:31,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:31,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534835312] [2023-11-06 23:00:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:31,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:31,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:31,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:31,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:31,855 INFO L85 PathProgramCache]: Analyzing trace with hash 28694854, now seen corresponding path program 1 times [2023-11-06 23:00:31,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:31,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376164772] [2023-11-06 23:00:31,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:31,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:31,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:31,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:31,901 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:31,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:31,902 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:31,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:31,902 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:00:31,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:31,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:31,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:31,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2023-11-06 23:00:31,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:31,903 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:31,904 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 23:00:31,906 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 23:00:32,005 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:32,006 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:00:32,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:32,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:32,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:32,015 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:32,015 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:32,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 23:00:32,046 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:32,046 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_f_#t~post0#1=0} Honda state: {ULTIMATE.start_f_#t~post0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:00:32,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-06 23:00:32,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:32,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:32,052 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:32,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 23:00:32,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:32,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:32,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:32,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:32,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:32,095 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:32,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:00:32,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:32,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 23:00:32,377 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:00:32,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:32,382 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:32,382 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:32,382 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:32,382 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:32,382 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:00:32,382 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:32,383 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:32,383 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:32,383 INFO L133 ssoRankerPreferences]: Filename of dumped script: twisted.c_Iteration3_Loop [2023-11-06 23:00:32,383 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:32,383 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:32,384 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 23:00:32,388 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 23:00:32,477 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:32,477 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:00:32,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:32,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:32,479 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:32,487 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 23:00:32,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 23:00:32,499 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:32,500 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:32,500 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:32,500 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:32,500 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:32,503 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:32,503 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:32,517 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:00:32,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:32,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:32,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:32,527 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:32,539 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 23:00:32,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 23:00:32,552 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:32,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:32,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:32,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:32,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:32,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:32,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:32,566 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:00:32,571 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-06 23:00:32,571 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 23:00:32,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:32,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:32,573 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:32,584 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:00:32,584 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:00:32,584 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:00:32,584 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_f_~k#1, ULTIMATE.start_f_~i~0#1) = 1*ULTIMATE.start_f_~k#1 - 1*ULTIMATE.start_f_~i~0#1 Supporting invariants [] [2023-11-06 23:00:32,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 23:00:32,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:32,594 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:00:32,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:32,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:32,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:32,638 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:32,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:32,668 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 23:00:32,670 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 23:00:32,670 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:32,695 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 22 states and 32 transitions. Complement of second has 4 states. [2023-11-06 23:00:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:32,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:32,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2023-11-06 23:00:32,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 2 letters. [2023-11-06 23:00:32,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:32,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 5 letters. Loop has 2 letters. [2023-11-06 23:00:32,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:32,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-06 23:00:32,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:32,698 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 32 transitions. [2023-11-06 23:00:32,699 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 23:00:32,700 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2023-11-06 23:00:32,700 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-06 23:00:32,700 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-06 23:00:32,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-06 23:00:32,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:32,701 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:00:32,701 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:00:32,701 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:00:32,701 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 23:00:32,701 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-06 23:00:32,701 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-06 23:00:32,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-06 23:00:32,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 11:00:32 BoogieIcfgContainer [2023-11-06 23:00:32,709 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 23:00:32,710 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:00:32,710 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:00:32,710 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:00:32,711 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:30" (3/4) ... [2023-11-06 23:00:32,713 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 23:00:32,714 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:00:32,715 INFO L158 Benchmark]: Toolchain (without parser) took 3166.53ms. Allocated memory is still 167.8MB. Free memory was 130.4MB in the beginning and 101.9MB in the end (delta: 28.5MB). Peak memory consumption was 28.3MB. Max. memory is 16.1GB. [2023-11-06 23:00:32,716 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 123.7MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:00:32,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 274.47ms. Allocated memory is still 167.8MB. Free memory was 130.4MB in the beginning and 129.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:00:32,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.92ms. Allocated memory is still 167.8MB. Free memory was 129.3MB in the beginning and 128.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:00:32,717 INFO L158 Benchmark]: Boogie Preprocessor took 28.32ms. Allocated memory is still 167.8MB. Free memory was 128.1MB in the beginning and 127.2MB in the end (delta: 873.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:00:32,718 INFO L158 Benchmark]: RCFGBuilder took 245.88ms. Allocated memory is still 167.8MB. Free memory was 127.2MB in the beginning and 117.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:00:32,718 INFO L158 Benchmark]: BuchiAutomizer took 2581.95ms. Allocated memory is still 167.8MB. Free memory was 117.6MB in the beginning and 101.9MB in the end (delta: 15.7MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2023-11-06 23:00:32,719 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 167.8MB. Free memory is still 101.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:00:32,722 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 123.7MB. Free memory is still 89.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 274.47ms. Allocated memory is still 167.8MB. Free memory was 130.4MB in the beginning and 129.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.92ms. Allocated memory is still 167.8MB. Free memory was 129.3MB in the beginning and 128.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.32ms. Allocated memory is still 167.8MB. Free memory was 128.1MB in the beginning and 127.2MB in the end (delta: 873.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 245.88ms. Allocated memory is still 167.8MB. Free memory was 127.2MB in the beginning and 117.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 2581.95ms. Allocated memory is still 167.8MB. Free memory was 117.6MB in the beginning and 101.9MB in the end (delta: 15.7MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 167.8MB. Free memory is still 101.9MB. 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 ((-1 * j) + l) and consists of 3 locations. One deterministic module has affine ranking function (k + (-1 * i)) and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 32 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp80 ukn100 mio100 lsp100 div348 bol100 ite100 ukn100 eq144 hnf95 smp43 dnf100 smp100 tf106 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 65ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s 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 23:00:32,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:32,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c80ef2d-6f82-4b46-a126-458561e0a89e/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