./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:29:57,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:29:57,553 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-29 02:29:57,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:29:57,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:29:57,583 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:29:57,584 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:29:57,584 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:29:57,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:29:57,586 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:29:57,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:29:57,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:29:57,587 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:29:57,588 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 02:29:57,588 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 02:29:57,589 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 02:29:57,589 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 02:29:57,590 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 02:29:57,590 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 02:29:57,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:29:57,591 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 02:29:57,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:29:57,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:29:57,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 02:29:57,594 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 02:29:57,594 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 02:29:57,594 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:29:57,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:29:57,595 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 02:29:57,596 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:29:57,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:29:57,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:29:57,597 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:29:57,597 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:29:57,598 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 02:29:57,598 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_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2023-11-29 02:29:57,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:29:57,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:29:57,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:29:57,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:29:57,854 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:29:57,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2023-11-29 02:30:00,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:30:00,976 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:30:00,976 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2023-11-29 02:30:00,982 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/data/bfdd4472a/aa5d0d88df2240f3aa718badd0d0b77d/FLAGa20c26212 [2023-11-29 02:30:00,996 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/data/bfdd4472a/aa5d0d88df2240f3aa718badd0d0b77d [2023-11-29 02:30:01,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:30:01,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:30:01,003 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:30:01,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:30:01,008 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:30:01,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:30:00" (1/1) ... [2023-11-29 02:30:01,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389181f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01, skipping insertion in model container [2023-11-29 02:30:01,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:30:00" (1/1) ... [2023-11-29 02:30:01,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:30:01,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:30:01,159 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:30:01,174 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:30:01,186 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:30:01,187 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01 WrapperNode [2023-11-29 02:30:01,187 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:30:01,188 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:30:01,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:30:01,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:30:01,197 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,220 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-29 02:30:01,220 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:30:01,221 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:30:01,221 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:30:01,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:30:01,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,235 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,242 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 02:30:01,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,249 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,250 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,252 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:30:01,253 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:30:01,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:30:01,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:30:01,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (1/1) ... [2023-11-29 02:30:01,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:01,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:01,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 02:30:01,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:30:01,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:30:01,426 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:30:01,428 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:30:01,498 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:30:01,509 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:30:01,509 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:30:01,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:30:01 BoogieIcfgContainer [2023-11-29 02:30:01,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:30:01,513 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 02:30:01,513 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 02:30:01,517 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 02:30:01,518 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:30:01,519 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 02:30:00" (1/3) ... [2023-11-29 02:30:01,520 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@424ef0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 02:30:01, skipping insertion in model container [2023-11-29 02:30:01,520 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:30:01,520 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:30:01" (2/3) ... [2023-11-29 02:30:01,521 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@424ef0dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 02:30:01, skipping insertion in model container [2023-11-29 02:30:01,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:30:01,521 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:30:01" (3/3) ... [2023-11-29 02:30:01,523 INFO L332 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2023-11-29 02:30:01,587 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 02:30:01,587 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 02:30:01,587 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 02:30:01,587 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 02:30:01,588 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 02:30:01,588 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 02:30:01,588 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 02:30:01,588 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 02:30:01,592 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2023-11-29 02:30:01,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-29 02:30:01,612 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:01,613 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:01,619 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:30:01,619 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:01,619 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 02:30:01,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2023-11-29 02:30:01,621 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-29 02:30:01,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:01,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:01,622 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:30:01,622 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:01,631 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4#L18-1true [2023-11-29 02:30:01,631 INFO L750 eck$LassoCheckResult]: Loop: 4#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 10#L12true assume !(10 == main_~i~0#1); 2#L12-2true assume 0 == main_~i~0#1;main_~up~0#1 := 1; 7#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4#L18-1true [2023-11-29 02:30:01,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 02:30:01,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:01,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106179485] [2023-11-29 02:30:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:01,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:01,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:01,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:01,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-11-29 02:30:01,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:01,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175755101] [2023-11-29 02:30:01,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:01,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:01,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:01,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:01,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:01,787 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2023-11-29 02:30:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:01,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493732721] [2023-11-29 02:30:01,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:01,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:01,799 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:01,807 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:01,900 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:01,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:01,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:01,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:01,902 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:30:01,902 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:01,902 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:01,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:01,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2023-11-29 02:30:01,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:01,903 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:01,923 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:01,937 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:01,942 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:01,947 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,031 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:02,031 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:30:02,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 02:30:02,044 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:02,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:02,067 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:02,067 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:02,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:30:02,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 02:30:02,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:02,088 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:02,109 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:02,109 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:02,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 02:30:02,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 02:30:02,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:02,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:02,142 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:02,142 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:02,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 02:30:02,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 02:30:02,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:02,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:02,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 02:30:02,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 02:30:02,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:30:02,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:02,203 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:30:02,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 02:30:02,207 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:02,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:02,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:02,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:02,208 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:30:02,208 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,208 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:02,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:02,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2023-11-29 02:30:02,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:02,209 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:02,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,218 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,224 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,288 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:02,292 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:30:02,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 02:30:02,299 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 [2023-11-29 02:30:02,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:02,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:02,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:02,312 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:02,317 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:30:02,317 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:30:02,324 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:02,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 02:30:02,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,335 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 02:30:02,346 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 [2023-11-29 02:30:02,360 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:02,360 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:02,361 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:02,361 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:02,365 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:30:02,365 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:30:02,372 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:02,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-29 02:30:02,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,378 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 02:30:02,381 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 [2023-11-29 02:30:02,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:02,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:02,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:02,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:02,394 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:02,395 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:30:02,395 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:02,399 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:30:02,402 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:30:02,402 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:30:02,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,406 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 02:30:02,414 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:30:02,414 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:30:02,414 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:30:02,415 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2023-11-29 02:30:02,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 02:30:02,422 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:30:02,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:02,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:02,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:02,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:02,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:02,547 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 [2023-11-29 02:30:02,550 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:30:02,627 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 51 transitions. Complement of second has 8 states. [2023-11-29 02:30:02,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:30:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2023-11-29 02:30:02,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-29 02:30:02,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:02,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-29 02:30:02,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:02,639 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 8 letters. [2023-11-29 02:30:02,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:02,640 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 51 transitions. [2023-11-29 02:30:02,644 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-29 02:30:02,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 19 states and 30 transitions. [2023-11-29 02:30:02,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-29 02:30:02,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-11-29 02:30:02,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2023-11-29 02:30:02,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-29 02:30:02,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:02,691 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2023-11-29 02:30:02,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2023-11-29 02:30:02,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-11-29 02:30:02,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 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) [2023-11-29 02:30:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2023-11-29 02:30:02,738 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-29 02:30:02,738 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-29 02:30:02,739 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 02:30:02,739 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2023-11-29 02:30:02,742 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-29 02:30:02,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:02,742 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:02,742 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 02:30:02,743 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:02,743 INFO L748 eck$LassoCheckResult]: Stem: 96#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 97#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 101#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 93#L12 [2023-11-29 02:30:02,743 INFO L750 eck$LassoCheckResult]: Loop: 93#L12 assume !(10 == main_~i~0#1); 102#L12-2 assume !(0 == main_~i~0#1); 103#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 92#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 93#L12 [2023-11-29 02:30:02,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:02,745 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-29 02:30:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:02,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761484164] [2023-11-29 02:30:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:02,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:02,754 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:02,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:02,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:02,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2023-11-29 02:30:02,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:02,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279510616] [2023-11-29 02:30:02,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:02,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:02,766 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:02,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:02,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:02,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2023-11-29 02:30:02,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:02,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652108740] [2023-11-29 02:30:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:02,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:02,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:02,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652108740] [2023-11-29 02:30:02,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652108740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:30:02,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:30:02,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:30:02,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960037639] [2023-11-29 02:30:02,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:30:02,879 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:02,879 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:02,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:02,880 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:02,880 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:30:02,880 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,880 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:02,880 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:02,880 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2023-11-29 02:30:02,880 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:02,880 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:02,882 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,886 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,896 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,900 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:02,984 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:02,984 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:30:02,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:02,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:02,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:02,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 02:30:02,999 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:02,999 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:03,019 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:03,019 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:03,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-29 02:30:03,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,024 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-29 02:30:03,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:03,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:03,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-11-29 02:30:03,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,045 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 02:30:03,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:30:03,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:03,135 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:30:03,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-29 02:30:03,141 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:03,141 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:03,141 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:03,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:03,141 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:30:03,142 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,142 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:03,142 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:03,142 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2023-11-29 02:30:03,142 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:03,142 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:03,144 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,148 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,158 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,161 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,245 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:03,245 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:30:03,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,246 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 02:30:03,250 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 [2023-11-29 02:30:03,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:03,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:03,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:03,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:03,265 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:30:03,266 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:30:03,271 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:03,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-29 02:30:03,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,276 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 02:30:03,279 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 [2023-11-29 02:30:03,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:03,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:03,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:03,291 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-29 02:30:03,291 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:03,293 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-29 02:30:03,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:03,297 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:30:03,300 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:30:03,300 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:30:03,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,301 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-29 02:30:03,303 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:30:03,304 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:30:03,304 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:30:03,304 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2023-11-29 02:30:03,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-29 02:30:03,308 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:30:03,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:03,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:03,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:03,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:03,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:03,377 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 [2023-11-29 02:30:03,377 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 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) [2023-11-29 02:30:03,409 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13. 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 28 states and 43 transitions. Complement of second has 7 states. [2023-11-29 02:30:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:03,410 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) [2023-11-29 02:30:03,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-29 02:30:03,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-29 02:30:03,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:03,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-29 02:30:03,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:03,411 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-29 02:30:03,411 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:03,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2023-11-29 02:30:03,413 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-29 02:30:03,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 35 transitions. [2023-11-29 02:30:03,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-29 02:30:03,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-29 02:30:03,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 35 transitions. [2023-11-29 02:30:03,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:03,415 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 35 transitions. [2023-11-29 02:30:03,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 35 transitions. [2023-11-29 02:30:03,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-29 02:30:03,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 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) [2023-11-29 02:30:03,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2023-11-29 02:30:03,418 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 34 transitions. [2023-11-29 02:30:03,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:30:03,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:30:03,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:30:03,421 INFO L87 Difference]: Start difference. First operand 20 states and 34 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2023-11-29 02:30:03,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:30:03,432 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2023-11-29 02:30:03,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 52 transitions. [2023-11-29 02:30:03,434 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-29 02:30:03,435 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 46 transitions. [2023-11-29 02:30:03,435 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-29 02:30:03,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-11-29 02:30:03,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 46 transitions. [2023-11-29 02:30:03,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:03,435 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 46 transitions. [2023-11-29 02:30:03,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 46 transitions. [2023-11-29 02:30:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-11-29 02:30:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 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) [2023-11-29 02:30:03,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2023-11-29 02:30:03,438 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 45 transitions. [2023-11-29 02:30:03,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:30:03,439 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2023-11-29 02:30:03,439 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 02:30:03,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 45 transitions. [2023-11-29 02:30:03,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-29 02:30:03,441 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:03,441 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:03,441 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-29 02:30:03,441 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:03,442 INFO L748 eck$LassoCheckResult]: Stem: 239#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 243#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 248#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 230#L12-2 assume !(0 == main_~i~0#1); 232#L15-1 [2023-11-29 02:30:03,442 INFO L750 eck$LassoCheckResult]: Loop: 232#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 241#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 252#L12 assume !(10 == main_~i~0#1); 250#L12-2 assume !(0 == main_~i~0#1); 232#L15-1 [2023-11-29 02:30:03,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:03,442 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2023-11-29 02:30:03,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:03,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432318213] [2023-11-29 02:30:03,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:03,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:03,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:03,452 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:03,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:03,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2023-11-29 02:30:03,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:03,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526372561] [2023-11-29 02:30:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:03,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:03,464 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:03,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2023-11-29 02:30:03,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:03,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539168324] [2023-11-29 02:30:03,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:03,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:03,471 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:03,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:03,516 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:03,516 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:03,516 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:03,516 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:03,516 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:30:03,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:03,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:03,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2023-11-29 02:30:03,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:03,517 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:03,518 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,529 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,533 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,536 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,594 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:03,595 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:30:03,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,596 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 02:30:03,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:03,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:03,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 02:30:03,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,624 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-29 02:30:03,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:30:03,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:03,745 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:30:03,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-29 02:30:03,749 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:03,749 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:03,749 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:03,749 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:03,749 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:30:03,749 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,749 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:03,749 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:03,750 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2023-11-29 02:30:03,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:03,750 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:03,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,760 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,762 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,764 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:03,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:03,820 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:30:03,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,821 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 02:30:03,827 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 [2023-11-29 02:30:03,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:03,838 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:03,838 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:03,838 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:03,838 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:03,839 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:30:03,839 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:03,842 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:30:03,845 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:30:03,845 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:30:03,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:03,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:03,846 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:03,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-29 02:30:03,852 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:30:03,852 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:30:03,852 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:30:03,852 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-29 02:30:03,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-29 02:30:03,856 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:30:03,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:03,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:03,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:03,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:03,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:03,928 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-29 02:30:03,928 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-29 02:30:03,959 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 65 states and 104 transitions. Complement of second has 7 states. [2023-11-29 02:30:03,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:03,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-11-29 02:30:03,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-29 02:30:03,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2023-11-29 02:30:03,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:03,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-11-29 02:30:03,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:03,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2023-11-29 02:30:03,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:03,962 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 104 transitions. [2023-11-29 02:30:03,964 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-29 02:30:03,966 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 60 states and 98 transitions. [2023-11-29 02:30:03,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-11-29 02:30:03,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2023-11-29 02:30:03,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 98 transitions. [2023-11-29 02:30:03,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:03,967 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 98 transitions. [2023-11-29 02:30:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 98 transitions. [2023-11-29 02:30:03,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-11-29 02:30:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.6785714285714286) internal successors, (94), 55 states have internal predecessors, (94), 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) [2023-11-29 02:30:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2023-11-29 02:30:03,973 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 94 transitions. [2023-11-29 02:30:03,973 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2023-11-29 02:30:03,973 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 02:30:03,973 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 94 transitions. [2023-11-29 02:30:03,975 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-29 02:30:03,975 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:03,975 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:03,976 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:30:03,976 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:03,976 INFO L748 eck$LassoCheckResult]: Stem: 382#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 383#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 387#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 414#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 411#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 410#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 407#L18-1 [2023-11-29 02:30:03,976 INFO L750 eck$LassoCheckResult]: Loop: 407#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 400#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 401#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 398#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 407#L18-1 [2023-11-29 02:30:03,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:03,977 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2023-11-29 02:30:03,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602740982] [2023-11-29 02:30:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:03,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:03,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:03,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602740982] [2023-11-29 02:30:04,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602740982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:30:04,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:30:04,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:30:04,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554204576] [2023-11-29 02:30:04,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:30:04,000 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:30:04,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1265322, now seen corresponding path program 1 times [2023-11-29 02:30:04,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:04,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351210901] [2023-11-29 02:30:04,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:04,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:04,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:04,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:04,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351210901] [2023-11-29 02:30:04,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351210901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:30:04,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:30:04,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:30:04,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288114873] [2023-11-29 02:30:04,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:30:04,022 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:30:04,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:30:04,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:30:04,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:30:04,023 INFO L87 Difference]: Start difference. First operand 56 states and 94 transitions. cyclomatic complexity: 44 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:30:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:30:04,036 INFO L93 Difference]: Finished difference Result 64 states and 97 transitions. [2023-11-29 02:30:04,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 97 transitions. [2023-11-29 02:30:04,038 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2023-11-29 02:30:04,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 61 states and 92 transitions. [2023-11-29 02:30:04,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2023-11-29 02:30:04,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2023-11-29 02:30:04,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 92 transitions. [2023-11-29 02:30:04,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:04,040 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 92 transitions. [2023-11-29 02:30:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 92 transitions. [2023-11-29 02:30:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-11-29 02:30:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 55 states have internal predecessors, (87), 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) [2023-11-29 02:30:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 87 transitions. [2023-11-29 02:30:04,045 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 87 transitions. [2023-11-29 02:30:04,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:30:04,047 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 87 transitions. [2023-11-29 02:30:04,047 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 02:30:04,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 87 transitions. [2023-11-29 02:30:04,048 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-29 02:30:04,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:04,048 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:04,049 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:30:04,049 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:04,049 INFO L748 eck$LassoCheckResult]: Stem: 509#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 510#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 514#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 549#L12 assume !(10 == main_~i~0#1); 548#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 536#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 534#L18-1 [2023-11-29 02:30:04,049 INFO L750 eck$LassoCheckResult]: Loop: 534#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 528#L12 assume !(10 == main_~i~0#1); 525#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 526#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 534#L18-1 [2023-11-29 02:30:04,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:04,049 INFO L85 PathProgramCache]: Analyzing trace with hash 889694448, now seen corresponding path program 1 times [2023-11-29 02:30:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:04,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534894820] [2023-11-29 02:30:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:04,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:04,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:04,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534894820] [2023-11-29 02:30:04,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534894820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:30:04,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:30:04,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:30:04,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453948177] [2023-11-29 02:30:04,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:30:04,069 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:30:04,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:04,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 2 times [2023-11-29 02:30:04,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:04,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832221206] [2023-11-29 02:30:04,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:04,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:04,074 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:04,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:04,102 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:04,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:04,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:04,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:04,103 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:30:04,103 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,103 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:04,103 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:04,103 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2023-11-29 02:30:04,103 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:04,103 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:04,104 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,107 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,110 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,114 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,162 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:04,162 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:30:04,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-29 02:30:04,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-29 02:30:04,166 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-29 02:30:04,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:04,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:04,190 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:04,190 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:04,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-11-29 02:30:04,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,195 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-29 02:30:04,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:04,197 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:04,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:04,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:04,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-29 02:30:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,215 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-29 02:30:04,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:04,217 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:04,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-29 02:30:04,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,239 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-29 02:30:04,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:30:04,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:04,262 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:30:04,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-29 02:30:04,268 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:04,268 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:04,268 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:04,268 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:04,268 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:30:04,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:04,269 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:04,269 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2023-11-29 02:30:04,269 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:04,269 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:04,270 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,274 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,279 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,283 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,326 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:04,326 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:30:04,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,328 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,331 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 [2023-11-29 02:30:04,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-29 02:30:04,344 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:04,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:04,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:04,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:04,347 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:30:04,347 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:30:04,354 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:04,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-29 02:30:04,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,360 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-29 02:30:04,365 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 [2023-11-29 02:30:04,375 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:04,375 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:04,376 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:04,376 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:04,376 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:04,377 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:30:04,377 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:04,380 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:30:04,382 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:30:04,382 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:30:04,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,383 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-29 02:30:04,386 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:30:04,386 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:30:04,386 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:30:04,386 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2023-11-29 02:30:04,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-11-29 02:30:04,391 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:30:04,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:04,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:04,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:04,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:04,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:04,448 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 [2023-11-29 02:30:04,448 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 87 transitions. cyclomatic complexity: 37 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 02:30:04,485 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 87 transitions. cyclomatic complexity: 37. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 122 states and 183 transitions. Complement of second has 7 states. [2023-11-29 02:30:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:04,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 02:30:04,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-29 02:30:04,487 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-29 02:30:04,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:04,488 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-29 02:30:04,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:04,488 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 8 letters. [2023-11-29 02:30:04,488 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:04,489 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 122 states and 183 transitions. [2023-11-29 02:30:04,491 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2023-11-29 02:30:04,493 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 122 states to 110 states and 165 transitions. [2023-11-29 02:30:04,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2023-11-29 02:30:04,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2023-11-29 02:30:04,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 165 transitions. [2023-11-29 02:30:04,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:04,495 INFO L218 hiAutomatonCegarLoop]: Abstraction has 110 states and 165 transitions. [2023-11-29 02:30:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 165 transitions. [2023-11-29 02:30:04,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2023-11-29 02:30:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 95 states have internal predecessors, (148), 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) [2023-11-29 02:30:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2023-11-29 02:30:04,506 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 148 transitions. [2023-11-29 02:30:04,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:30:04,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:30:04,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:30:04,507 INFO L87 Difference]: Start difference. First operand 96 states and 148 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:30:04,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:30:04,517 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2023-11-29 02:30:04,518 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 95 transitions. [2023-11-29 02:30:04,519 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-29 02:30:04,520 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 62 states and 84 transitions. [2023-11-29 02:30:04,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2023-11-29 02:30:04,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2023-11-29 02:30:04,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 84 transitions. [2023-11-29 02:30:04,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:04,521 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 84 transitions. [2023-11-29 02:30:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 84 transitions. [2023-11-29 02:30:04,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2023-11-29 02:30:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 57 states have internal predecessors, (80), 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) [2023-11-29 02:30:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2023-11-29 02:30:04,526 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 80 transitions. [2023-11-29 02:30:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:30:04,527 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 80 transitions. [2023-11-29 02:30:04,527 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-29 02:30:04,528 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 80 transitions. [2023-11-29 02:30:04,528 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-29 02:30:04,528 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:04,529 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:04,529 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:30:04,529 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:04,529 INFO L748 eck$LassoCheckResult]: Stem: 905#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 911#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 920#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 918#L12-2 assume !(0 == main_~i~0#1); 907#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 942#L12 assume !(10 == main_~i~0#1); 896#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 897#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 937#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 934#L12 [2023-11-29 02:30:04,530 INFO L750 eck$LassoCheckResult]: Loop: 934#L12 assume !(10 == main_~i~0#1); 929#L12-2 assume !(0 == main_~i~0#1); 930#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 936#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 934#L12 [2023-11-29 02:30:04,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:04,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1179049836, now seen corresponding path program 1 times [2023-11-29 02:30:04,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:04,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168430923] [2023-11-29 02:30:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:04,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:04,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:04,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:04,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168430923] [2023-11-29 02:30:04,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168430923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:30:04,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199995512] [2023-11-29 02:30:04,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:04,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:30:04,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,576 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 02:30:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:04,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:30:04,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:04,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:04,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:30:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:04,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199995512] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:30:04,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:30:04,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-29 02:30:04,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705100633] [2023-11-29 02:30:04,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:30:04,657 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:30:04,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:04,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 2 times [2023-11-29 02:30:04,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:04,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182061105] [2023-11-29 02:30:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:04,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:04,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:04,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:04,703 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:04,704 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:04,704 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:04,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:04,704 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:30:04,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:04,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:04,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2023-11-29 02:30:04,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:04,705 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:04,706 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,714 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,718 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,721 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,791 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:04,791 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:30:04,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,793 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 02:30:04,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:04,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:04,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-29 02:30:04,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,812 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-29 02:30:04,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:30:04,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:04,902 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:30:04,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-29 02:30:04,905 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:04,905 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:04,905 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:04,906 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:04,906 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:30:04,906 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,906 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:04,906 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:04,906 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2023-11-29 02:30:04,906 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:04,906 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:04,908 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,914 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,917 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:04,980 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:04,981 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:30:04,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:04,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:04,982 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:04,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-29 02:30:04,984 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 [2023-11-29 02:30:04,995 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:04,995 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:04,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:04,995 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-29 02:30:04,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:04,996 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-29 02:30:04,996 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:05,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:30:05,002 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:30:05,002 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:30:05,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,004 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-29 02:30:05,007 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:30:05,007 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:30:05,007 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:30:05,007 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2023-11-29 02:30:05,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-29 02:30:05,010 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:30:05,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:05,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:05,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:05,063 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 [2023-11-29 02:30:05,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 80 transitions. cyclomatic complexity: 29 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:05,090 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 80 transitions. cyclomatic complexity: 29. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 74 states and 103 transitions. Complement of second has 7 states. [2023-11-29 02:30:05,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-29 02:30:05,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-29 02:30:05,092 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:05,092 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:30:05,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:05,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:05,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:05,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:05,145 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:30:05,145 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 80 transitions. cyclomatic complexity: 29 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:05,173 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 80 transitions. cyclomatic complexity: 29. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 74 states and 103 transitions. Complement of second has 7 states. [2023-11-29 02:30:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-29 02:30:05,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-29 02:30:05,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:05,177 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:30:05,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:05,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:05,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:05,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:05,246 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:30:05,247 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 80 transitions. cyclomatic complexity: 29 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:05,276 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 80 transitions. cyclomatic complexity: 29. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 101 states and 150 transitions. Complement of second has 6 states. [2023-11-29 02:30:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:05,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:05,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-29 02:30:05,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-29 02:30:05,278 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:05,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2023-11-29 02:30:05,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:05,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-29 02:30:05,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:05,279 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 150 transitions. [2023-11-29 02:30:05,281 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:30:05,282 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 66 states and 91 transitions. [2023-11-29 02:30:05,282 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-29 02:30:05,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-29 02:30:05,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 91 transitions. [2023-11-29 02:30:05,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:05,283 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 91 transitions. [2023-11-29 02:30:05,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 91 transitions. [2023-11-29 02:30:05,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-29 02:30:05,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 64 states have internal predecessors, (90), 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) [2023-11-29 02:30:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2023-11-29 02:30:05,288 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 90 transitions. [2023-11-29 02:30:05,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:30:05,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:30:05,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:30:05,289 INFO L87 Difference]: Start difference. First operand 65 states and 90 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 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) [2023-11-29 02:30:05,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:30:05,328 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2023-11-29 02:30:05,328 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 126 transitions. [2023-11-29 02:30:05,330 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-29 02:30:05,331 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 88 states and 116 transitions. [2023-11-29 02:30:05,331 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2023-11-29 02:30:05,331 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2023-11-29 02:30:05,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 116 transitions. [2023-11-29 02:30:05,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:05,331 INFO L218 hiAutomatonCegarLoop]: Abstraction has 88 states and 116 transitions. [2023-11-29 02:30:05,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 116 transitions. [2023-11-29 02:30:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 73. [2023-11-29 02:30:05,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 72 states have internal predecessors, (97), 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) [2023-11-29 02:30:05,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2023-11-29 02:30:05,337 INFO L240 hiAutomatonCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-29 02:30:05,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:30:05,338 INFO L428 stractBuchiCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-29 02:30:05,338 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-29 02:30:05,338 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 97 transitions. [2023-11-29 02:30:05,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2023-11-29 02:30:05,339 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:05,339 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:05,339 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:30:05,339 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:05,340 INFO L748 eck$LassoCheckResult]: Stem: 1609#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1610#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1613#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1619#L12 assume !(10 == main_~i~0#1); 1617#L12-2 assume !(0 == main_~i~0#1); 1618#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1628#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1630#L12 assume !(10 == main_~i~0#1); 1653#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1664#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1661#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1608#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1615#L12-2 [2023-11-29 02:30:05,340 INFO L750 eck$LassoCheckResult]: Loop: 1615#L12-2 assume !(0 == main_~i~0#1); 1616#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1605#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1606#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1615#L12-2 [2023-11-29 02:30:05,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 2 times [2023-11-29 02:30:05,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:05,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749279902] [2023-11-29 02:30:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:05,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:30:05,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:05,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749279902] [2023-11-29 02:30:05,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749279902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:30:05,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:30:05,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:30:05,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367536189] [2023-11-29 02:30:05,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:30:05,375 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:30:05,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:05,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2023-11-29 02:30:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:05,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331616748] [2023-11-29 02:30:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:05,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:05,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:05,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:05,416 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:05,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:05,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:05,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:05,416 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:30:05,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:05,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:05,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2023-11-29 02:30:05,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:05,416 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:05,417 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:05,420 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:05,423 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:05,428 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:05,470 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:05,471 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:30:05,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,472 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-29 02:30:05,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:05,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:05,497 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:05,497 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:05,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2023-11-29 02:30:05,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,501 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-29 02:30:05,504 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:05,504 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:05,523 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:05,523 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:05,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-29 02:30:05,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,528 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-29 02:30:05,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:05,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:05,544 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:05,544 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:05,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2023-11-29 02:30:05,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,551 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-29 02:30:05,553 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:05,554 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:05,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-11-29 02:30:05,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,571 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-29 02:30:05,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:30:05,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:05,589 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:30:05,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-29 02:30:05,593 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:05,593 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:05,593 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:05,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:05,593 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:30:05,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,594 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:05,594 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:05,594 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2023-11-29 02:30:05,594 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:05,594 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:05,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:05,598 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:05,601 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:05,606 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:05,661 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:05,661 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:30:05,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,662 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-29 02:30:05,665 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 [2023-11-29 02:30:05,678 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:05,678 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:05,678 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:05,678 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:05,680 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:30:05,680 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:30:05,684 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:05,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-11-29 02:30:05,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,689 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-29 02:30:05,695 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 [2023-11-29 02:30:05,708 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:05,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:05,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:05,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:05,710 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:30:05,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:30:05,715 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:05,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-29 02:30:05,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,720 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-29 02:30:05,728 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 [2023-11-29 02:30:05,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:05,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:05,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:05,742 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-29 02:30:05,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:05,743 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-29 02:30:05,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:05,746 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:05,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-29 02:30:05,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,752 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-29 02:30:05,755 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 [2023-11-29 02:30:05,768 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:05,768 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:05,768 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:05,768 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:05,769 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:05,770 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:30:05,770 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:05,773 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:30:05,776 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:30:05,776 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:30:05,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:05,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:05,778 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:05,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-29 02:30:05,782 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:30:05,782 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:30:05,782 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:30:05,782 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-29 02:30:05,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-11-29 02:30:05,787 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:30:05,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:05,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:05,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:05,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:05,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:05,849 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 [2023-11-29 02:30:05,849 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 97 transitions. cyclomatic complexity: 30 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-29 02:30:05,875 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 97 transitions. cyclomatic complexity: 30. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 154 states and 214 transitions. Complement of second has 7 states. [2023-11-29 02:30:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:05,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-29 02:30:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-29 02:30:05,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2023-11-29 02:30:05,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:05,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2023-11-29 02:30:05,877 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:05,877 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2023-11-29 02:30:05,878 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:05,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 154 states and 214 transitions. [2023-11-29 02:30:05,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2023-11-29 02:30:05,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 154 states to 120 states and 159 transitions. [2023-11-29 02:30:05,881 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-11-29 02:30:05,881 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2023-11-29 02:30:05,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 159 transitions. [2023-11-29 02:30:05,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:05,882 INFO L218 hiAutomatonCegarLoop]: Abstraction has 120 states and 159 transitions. [2023-11-29 02:30:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states and 159 transitions. [2023-11-29 02:30:05,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2023-11-29 02:30:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 93 states have (on average 1.3333333333333333) internal successors, (124), 92 states have internal predecessors, (124), 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) [2023-11-29 02:30:05,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2023-11-29 02:30:05,887 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 124 transitions. [2023-11-29 02:30:05,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:30:05,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:30:05,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:30:05,888 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-29 02:30:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:30:05,908 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2023-11-29 02:30:05,908 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 146 transitions. [2023-11-29 02:30:05,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-29 02:30:05,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 112 states and 146 transitions. [2023-11-29 02:30:05,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2023-11-29 02:30:05,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2023-11-29 02:30:05,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 146 transitions. [2023-11-29 02:30:05,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:05,911 INFO L218 hiAutomatonCegarLoop]: Abstraction has 112 states and 146 transitions. [2023-11-29 02:30:05,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 146 transitions. [2023-11-29 02:30:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-11-29 02:30:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 100 states have (on average 1.3) internal successors, (130), 99 states have internal predecessors, (130), 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) [2023-11-29 02:30:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 130 transitions. [2023-11-29 02:30:05,916 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100 states and 130 transitions. [2023-11-29 02:30:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:30:05,917 INFO L428 stractBuchiCegarLoop]: Abstraction has 100 states and 130 transitions. [2023-11-29 02:30:05,918 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-29 02:30:05,918 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 130 transitions. [2023-11-29 02:30:05,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-29 02:30:05,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:05,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:05,920 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2023-11-29 02:30:05,920 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:30:05,921 INFO L748 eck$LassoCheckResult]: Stem: 2112#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 2113#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2118#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2124#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2125#L12-2 assume !(0 == main_~i~0#1); 2198#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2197#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2196#L12 assume !(10 == main_~i~0#1); 2194#L12-2 assume !(0 == main_~i~0#1); 2192#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2190#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2188#L12 assume !(10 == main_~i~0#1); 2186#L12-2 assume !(0 == main_~i~0#1); 2184#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2182#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2181#L12 assume !(10 == main_~i~0#1); 2171#L12-2 assume !(0 == main_~i~0#1); 2178#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2177#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2170#L12 assume !(10 == main_~i~0#1); 2169#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2163#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2167#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2166#L12 assume !(10 == main_~i~0#1); 2155#L12-2 assume !(0 == main_~i~0#1); 2157#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2156#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2154#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2127#L12-2 [2023-11-29 02:30:05,921 INFO L750 eck$LassoCheckResult]: Loop: 2127#L12-2 assume !(0 == main_~i~0#1); 2122#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2108#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2109#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2127#L12-2 [2023-11-29 02:30:05,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 3 times [2023-11-29 02:30:05,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:05,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120751689] [2023-11-29 02:30:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:05,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:05,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-11-29 02:30:05,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-29 02:30:05,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2023-11-29 02:30:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:30:06,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120751689] [2023-11-29 02:30:06,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120751689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:30:06,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386538096] [2023-11-29 02:30:06,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:30:06,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:30:06,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:06,035 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:30:06,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-29 02:30:06,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 02:30:06,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:30:06,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:06,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 02:30:06,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:30:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 02:30:06,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386538096] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:30:06,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:30:06,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-11-29 02:30:06,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881986371] [2023-11-29 02:30:06,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:30:06,144 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:30:06,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2023-11-29 02:30:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339225043] [2023-11-29 02:30:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:06,148 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:06,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:06,185 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:06,185 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:06,186 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:06,186 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:06,186 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:30:06,186 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:06,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:06,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:06,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2023-11-29 02:30:06,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:06,186 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:06,187 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:06,192 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:06,197 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:06,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:06,250 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:06,250 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:30:06,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:06,251 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:06,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-29 02:30:06,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:06,254 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:06,267 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:06,267 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:06,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-29 02:30:06,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:06,271 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:06,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-29 02:30:06,272 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:06,273 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:06,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-11-29 02:30:06,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:06,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:06,289 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:06,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-29 02:30:06,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:30:06,291 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:06,306 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:30:06,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2023-11-29 02:30:06,309 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:06,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:06,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:06,310 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:06,310 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:30:06,310 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:06,310 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:06,310 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:06,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2023-11-29 02:30:06,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:06,310 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:06,311 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:06,317 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:06,322 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:06,325 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:06,377 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:06,378 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:30:06,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:06,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:06,379 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:06,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-29 02:30:06,382 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 [2023-11-29 02:30:06,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:06,393 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:06,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:06,393 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-29 02:30:06,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:06,394 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-29 02:30:06,395 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:06,397 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:06,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2023-11-29 02:30:06,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:06,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:06,400 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:06,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-29 02:30:06,403 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 [2023-11-29 02:30:06,414 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:06,414 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:06,414 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:06,414 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:06,414 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:06,415 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:30:06,415 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:06,418 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:30:06,420 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 02:30:06,420 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:30:06,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:06,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:06,421 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:06,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-29 02:30:06,423 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:30:06,423 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:30:06,423 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:30:06,423 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-29 02:30:06,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-29 02:30:06,427 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:30:06,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:06,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:06,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:06,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:06,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:06,502 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 [2023-11-29 02:30:06,502 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 130 transitions. cyclomatic complexity: 38 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:06,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 130 transitions. cyclomatic complexity: 38. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 131 states and 172 transitions. Complement of second has 7 states. [2023-11-29 02:30:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-29 02:30:06,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-29 02:30:06,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:06,533 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:30:06,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:06,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:06,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:06,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:06,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:06,599 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:30:06,599 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 130 transitions. cyclomatic complexity: 38 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:06,627 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 130 transitions. cyclomatic complexity: 38. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 145 states and 180 transitions. Complement of second has 7 states. [2023-11-29 02:30:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-11-29 02:30:06,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-29 02:30:06,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:06,629 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:30:06,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:06,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:06,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:06,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:30:06,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:30:06,706 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:30:06,707 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 100 states and 130 transitions. cyclomatic complexity: 38 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:06,732 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 100 states and 130 transitions. cyclomatic complexity: 38. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 144 states and 191 transitions. Complement of second has 8 states. [2023-11-29 02:30:06,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-11-29 02:30:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-29 02:30:06,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-29 02:30:06,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:06,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2023-11-29 02:30:06,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:06,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2023-11-29 02:30:06,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:06,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 144 states and 191 transitions. [2023-11-29 02:30:06,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-29 02:30:06,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 144 states to 103 states and 133 transitions. [2023-11-29 02:30:06,738 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-29 02:30:06,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-29 02:30:06,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 133 transitions. [2023-11-29 02:30:06,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:06,738 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 133 transitions. [2023-11-29 02:30:06,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 133 transitions. [2023-11-29 02:30:06,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2023-11-29 02:30:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 70 states have internal predecessors, (91), 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) [2023-11-29 02:30:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2023-11-29 02:30:06,742 INFO L240 hiAutomatonCegarLoop]: Abstraction has 71 states and 91 transitions. [2023-11-29 02:30:06,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:30:06,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:30:06,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:30:06,743 INFO L87 Difference]: Start difference. First operand 71 states and 91 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 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) [2023-11-29 02:30:06,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:30:06,839 INFO L93 Difference]: Finished difference Result 160 states and 198 transitions. [2023-11-29 02:30:06,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 198 transitions. [2023-11-29 02:30:06,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2023-11-29 02:30:06,842 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 158 states and 196 transitions. [2023-11-29 02:30:06,842 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-29 02:30:06,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-29 02:30:06,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 196 transitions. [2023-11-29 02:30:06,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:06,842 INFO L218 hiAutomatonCegarLoop]: Abstraction has 158 states and 196 transitions. [2023-11-29 02:30:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states and 196 transitions. [2023-11-29 02:30:06,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 111. [2023-11-29 02:30:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 111 states have (on average 1.2342342342342343) internal successors, (137), 110 states have internal predecessors, (137), 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) [2023-11-29 02:30:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2023-11-29 02:30:06,846 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 137 transitions. [2023-11-29 02:30:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 02:30:06,847 INFO L428 stractBuchiCegarLoop]: Abstraction has 111 states and 137 transitions. [2023-11-29 02:30:06,847 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-29 02:30:06,847 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 137 transitions. [2023-11-29 02:30:06,847 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2023-11-29 02:30:06,848 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:06,848 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:06,848 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-29 02:30:06,849 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 10, 10, 6, 5, 1, 1] [2023-11-29 02:30:06,849 INFO L748 eck$LassoCheckResult]: Stem: 3362#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3363#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3357#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3358#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3354#L12-2 [2023-11-29 02:30:06,849 INFO L750 eck$LassoCheckResult]: Loop: 3354#L12-2 assume !(0 == main_~i~0#1); 3355#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3461#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3460#L12 assume !(10 == main_~i~0#1); 3459#L12-2 assume !(0 == main_~i~0#1); 3458#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3457#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3456#L12 assume !(10 == main_~i~0#1); 3455#L12-2 assume !(0 == main_~i~0#1); 3454#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3453#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3452#L12 assume !(10 == main_~i~0#1); 3451#L12-2 assume !(0 == main_~i~0#1); 3450#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3449#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3448#L12 assume !(10 == main_~i~0#1); 3442#L12-2 assume !(0 == main_~i~0#1); 3446#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 3443#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3441#L12 assume !(10 == main_~i~0#1); 3440#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 3432#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3433#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3428#L12 assume !(10 == main_~i~0#1); 3429#L12-2 assume !(0 == main_~i~0#1); 3424#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3425#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3439#L12 assume !(10 == main_~i~0#1); 3436#L12-2 assume !(0 == main_~i~0#1); 3419#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3418#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3416#L12 assume !(10 == main_~i~0#1); 3417#L12-2 assume !(0 == main_~i~0#1); 3413#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3412#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3410#L12 assume !(10 == main_~i~0#1); 3411#L12-2 assume !(0 == main_~i~0#1); 3406#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3407#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3403#L12 assume !(10 == main_~i~0#1); 3379#L12-2 assume !(0 == main_~i~0#1); 3435#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 3447#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3378#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3354#L12-2 [2023-11-29 02:30:06,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:06,849 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-29 02:30:06,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:06,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437179906] [2023-11-29 02:30:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:06,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:06,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:06,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:06,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash 752067982, now seen corresponding path program 1 times [2023-11-29 02:30:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551698177] [2023-11-29 02:30:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:06,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 02:30:06,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:06,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551698177] [2023-11-29 02:30:06,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551698177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:30:06,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934507257] [2023-11-29 02:30:06,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:06,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:30:06,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:06,990 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:30:06,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-29 02:30:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:07,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:30:07,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 02:30:07,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:30:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 02:30:07,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934507257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:30:07,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:30:07,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2023-11-29 02:30:07,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205921112] [2023-11-29 02:30:07,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:30:07,180 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:30:07,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:30:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:30:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:30:07,181 INFO L87 Difference]: Start difference. First operand 111 states and 137 transitions. cyclomatic complexity: 31 Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 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) [2023-11-29 02:30:07,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:30:07,250 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2023-11-29 02:30:07,250 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217 states and 266 transitions. [2023-11-29 02:30:07,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2023-11-29 02:30:07,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217 states to 217 states and 266 transitions. [2023-11-29 02:30:07,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-29 02:30:07,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-29 02:30:07,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 266 transitions. [2023-11-29 02:30:07,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:07,253 INFO L218 hiAutomatonCegarLoop]: Abstraction has 217 states and 266 transitions. [2023-11-29 02:30:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 266 transitions. [2023-11-29 02:30:07,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 143. [2023-11-29 02:30:07,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 143 states have (on average 1.2097902097902098) internal successors, (173), 142 states have internal predecessors, (173), 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) [2023-11-29 02:30:07,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2023-11-29 02:30:07,258 INFO L240 hiAutomatonCegarLoop]: Abstraction has 143 states and 173 transitions. [2023-11-29 02:30:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:30:07,259 INFO L428 stractBuchiCegarLoop]: Abstraction has 143 states and 173 transitions. [2023-11-29 02:30:07,260 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-29 02:30:07,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states and 173 transitions. [2023-11-29 02:30:07,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2023-11-29 02:30:07,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:07,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:07,262 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-29 02:30:07,262 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2023-11-29 02:30:07,263 INFO L748 eck$LassoCheckResult]: Stem: 3963#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3964#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3958#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3959#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3955#L12-2 [2023-11-29 02:30:07,263 INFO L750 eck$LassoCheckResult]: Loop: 3955#L12-2 assume !(0 == main_~i~0#1); 3956#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4094#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4093#L12 assume !(10 == main_~i~0#1); 4092#L12-2 assume !(0 == main_~i~0#1); 4091#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4090#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4089#L12 assume !(10 == main_~i~0#1); 4088#L12-2 assume !(0 == main_~i~0#1); 4087#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4086#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4085#L12 assume !(10 == main_~i~0#1); 4084#L12-2 assume !(0 == main_~i~0#1); 4083#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4082#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4081#L12 assume !(10 == main_~i~0#1); 4077#L12-2 assume !(0 == main_~i~0#1); 4080#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4078#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4076#L12 assume !(10 == main_~i~0#1); 4057#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4054#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4053#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4051#L12 assume !(10 == main_~i~0#1); 4052#L12-2 assume !(0 == main_~i~0#1); 4048#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4046#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4047#L12 assume !(10 == main_~i~0#1); 4061#L12-2 assume !(0 == main_~i~0#1); 4042#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4041#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4039#L12 assume !(10 == main_~i~0#1); 4040#L12-2 assume !(0 == main_~i~0#1); 4058#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4065#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4033#L12 assume !(10 == main_~i~0#1); 4034#L12-2 assume !(0 == main_~i~0#1); 4055#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4073#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4071#L12 assume !(10 == main_~i~0#1); 4059#L12-2 assume !(0 == main_~i~0#1); 4026#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4025#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4023#L12 assume !(10 == main_~i~0#1); 4024#L12-2 assume !(0 == main_~i~0#1); 4020#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4019#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4017#L12 assume !(10 == main_~i~0#1); 4018#L12-2 assume !(0 == main_~i~0#1); 4060#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4075#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4011#L12 assume !(10 == main_~i~0#1); 4012#L12-2 assume !(0 == main_~i~0#1); 4056#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4079#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4006#L12 assume !(10 == main_~i~0#1); 3980#L12-2 assume !(0 == main_~i~0#1); 4002#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4003#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3979#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3955#L12-2 [2023-11-29 02:30:07,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:07,263 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 2 times [2023-11-29 02:30:07,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:07,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261486139] [2023-11-29 02:30:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:07,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:07,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:07,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:07,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash 240822066, now seen corresponding path program 2 times [2023-11-29 02:30:07,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:07,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556357481] [2023-11-29 02:30:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:07,280 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:07,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:07,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:07,294 INFO L85 PathProgramCache]: Analyzing trace with hash 434182679, now seen corresponding path program 4 times [2023-11-29 02:30:07,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:07,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772673034] [2023-11-29 02:30:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:07,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:07,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2023-11-29 02:30:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 02:30:07,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:30:07,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772673034] [2023-11-29 02:30:07,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772673034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:30:07,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772879743] [2023-11-29 02:30:07,424 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:30:07,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:30:07,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:07,425 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:30:07,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-29 02:30:07,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:30:07,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:30:07,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:30:07,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 02:30:07,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:30:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 02:30:07,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772879743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:30:07,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:30:07,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-11-29 02:30:07,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114263217] [2023-11-29 02:30:07,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:30:07,956 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:07,956 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:07,956 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:07,956 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:07,956 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:30:07,956 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:07,956 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:07,956 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:07,956 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2023-11-29 02:30:07,956 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:07,956 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:07,957 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:07,960 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:07,967 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:07,970 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:08,036 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:08,036 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:30:08,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:08,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:08,037 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:08,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2023-11-29 02:30:08,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:08,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:08,062 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:30:08,062 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:30:08,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2023-11-29 02:30:08,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:08,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:08,066 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:08,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2023-11-29 02:30:08,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:30:08,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:08,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2023-11-29 02:30:08,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:08,087 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:08,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-29 02:30:08,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:30:08,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:30:08,106 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:30:08,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2023-11-29 02:30:08,109 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:30:08,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:30:08,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:30:08,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:30:08,109 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:30:08,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:08,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:30:08,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:30:08,109 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2023-11-29 02:30:08,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:30:08,109 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:30:08,110 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:08,113 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:08,121 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:08,126 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:30:08,191 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:30:08,191 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:30:08,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:08,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:08,192 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:08,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-29 02:30:08,194 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 [2023-11-29 02:30:08,204 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:08,204 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:08,204 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:08,204 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:08,206 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:30:08,206 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:30:08,209 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:30:08,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2023-11-29 02:30:08,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:08,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:08,212 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:08,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-29 02:30:08,215 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 [2023-11-29 02:30:08,225 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:30:08,225 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:30:08,225 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:30:08,225 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:30:08,225 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:30:08,226 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:30:08,226 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:30:08,229 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:30:08,231 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:30:08,231 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:30:08,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:30:08,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:30:08,232 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:30:08,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-29 02:30:08,234 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:30:08,234 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:30:08,235 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:30:08,235 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 15 Supporting invariants [] [2023-11-29 02:30:08,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2023-11-29 02:30:08,238 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:30:08,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:08,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:30:08,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:30:08,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:30:08,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:30:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 249 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 02:30:08,402 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2023-11-29 02:30:08,403 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 143 states and 173 transitions. cyclomatic complexity: 35 Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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) [2023-11-29 02:30:08,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2023-11-29 02:30:08,675 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 143 states and 173 transitions. cyclomatic complexity: 35. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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 690 states and 839 transitions. Complement of second has 27 states. [2023-11-29 02:30:08,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2023-11-29 02:30:08,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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) [2023-11-29 02:30:08,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 69 transitions. [2023-11-29 02:30:08,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 4 letters. Loop has 60 letters. [2023-11-29 02:30:08,677 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:08,677 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 64 letters. Loop has 60 letters. [2023-11-29 02:30:08,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:08,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 4 letters. Loop has 120 letters. [2023-11-29 02:30:08,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:30:08,679 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 690 states and 839 transitions. [2023-11-29 02:30:08,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2023-11-29 02:30:08,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 690 states to 522 states and 629 transitions. [2023-11-29 02:30:08,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-29 02:30:08,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2023-11-29 02:30:08,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 629 transitions. [2023-11-29 02:30:08,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:08,690 INFO L218 hiAutomatonCegarLoop]: Abstraction has 522 states and 629 transitions. [2023-11-29 02:30:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 629 transitions. [2023-11-29 02:30:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 384. [2023-11-29 02:30:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 384 states have (on average 1.2057291666666667) internal successors, (463), 383 states have internal predecessors, (463), 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) [2023-11-29 02:30:08,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 463 transitions. [2023-11-29 02:30:08,702 INFO L240 hiAutomatonCegarLoop]: Abstraction has 384 states and 463 transitions. [2023-11-29 02:30:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:30:08,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:30:08,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:30:08,703 INFO L87 Difference]: Start difference. First operand 384 states and 463 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2023-11-29 02:30:08,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:30:08,770 INFO L93 Difference]: Finished difference Result 322 states and 385 transitions. [2023-11-29 02:30:08,770 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 385 transitions. [2023-11-29 02:30:08,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2023-11-29 02:30:08,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 272 states and 335 transitions. [2023-11-29 02:30:08,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-29 02:30:08,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-29 02:30:08,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 335 transitions. [2023-11-29 02:30:08,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:30:08,775 INFO L218 hiAutomatonCegarLoop]: Abstraction has 272 states and 335 transitions. [2023-11-29 02:30:08,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states and 335 transitions. [2023-11-29 02:30:08,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 183. [2023-11-29 02:30:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 183 states have (on average 1.2185792349726776) internal successors, (223), 182 states have internal predecessors, (223), 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) [2023-11-29 02:30:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 223 transitions. [2023-11-29 02:30:08,780 INFO L240 hiAutomatonCegarLoop]: Abstraction has 183 states and 223 transitions. [2023-11-29 02:30:08,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:30:08,781 INFO L428 stractBuchiCegarLoop]: Abstraction has 183 states and 223 transitions. [2023-11-29 02:30:08,781 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-29 02:30:08,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 183 states and 223 transitions. [2023-11-29 02:30:08,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-29 02:30:08,783 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:30:08,783 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:30:08,784 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-29 02:30:08,784 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-29 02:30:08,784 INFO L748 eck$LassoCheckResult]: Stem: 6146#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 6147#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 6141#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6142#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 6138#L12-2 [2023-11-29 02:30:08,784 INFO L750 eck$LassoCheckResult]: Loop: 6138#L12-2 assume !(0 == main_~i~0#1); 6139#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6144#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6145#L12 assume !(10 == main_~i~0#1); 6152#L12-2 assume !(0 == main_~i~0#1); 6320#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6319#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6318#L12 assume !(10 == main_~i~0#1); 6317#L12-2 assume !(0 == main_~i~0#1); 6316#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6315#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6314#L12 assume !(10 == main_~i~0#1); 6313#L12-2 assume !(0 == main_~i~0#1); 6312#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6311#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6310#L12 assume !(10 == main_~i~0#1); 6306#L12-2 assume !(0 == main_~i~0#1); 6305#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6304#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6303#L12 assume !(10 == main_~i~0#1); 6302#L12-2 assume !(0 == main_~i~0#1); 6301#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6300#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6299#L12 assume !(10 == main_~i~0#1); 6298#L12-2 assume !(0 == main_~i~0#1); 6297#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6296#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6295#L12 assume !(10 == main_~i~0#1); 6294#L12-2 assume !(0 == main_~i~0#1); 6293#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6292#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6291#L12 assume !(10 == main_~i~0#1); 6290#L12-2 assume !(0 == main_~i~0#1); 6289#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6288#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6287#L12 assume !(10 == main_~i~0#1); 6284#L12-2 assume !(0 == main_~i~0#1); 6286#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 6285#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6283#L12 assume !(10 == main_~i~0#1); 6260#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 6259#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6258#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6256#L12 assume !(10 == main_~i~0#1); 6257#L12-2 assume !(0 == main_~i~0#1); 6253#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6252#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6250#L12 assume !(10 == main_~i~0#1); 6251#L12-2 assume !(0 == main_~i~0#1); 6247#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6246#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6244#L12 assume !(10 == main_~i~0#1); 6245#L12-2 assume !(0 == main_~i~0#1); 6241#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6240#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6238#L12 assume !(10 == main_~i~0#1); 6239#L12-2 assume !(0 == main_~i~0#1); 6235#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6234#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6232#L12 assume !(10 == main_~i~0#1); 6233#L12-2 assume !(0 == main_~i~0#1); 6229#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6228#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6226#L12 assume !(10 == main_~i~0#1); 6227#L12-2 assume !(0 == main_~i~0#1); 6223#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6222#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6220#L12 assume !(10 == main_~i~0#1); 6221#L12-2 assume !(0 == main_~i~0#1); 6217#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6216#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6214#L12 assume !(10 == main_~i~0#1); 6215#L12-2 assume !(0 == main_~i~0#1); 6211#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6210#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6209#L12 assume !(10 == main_~i~0#1); 6168#L12-2 assume !(0 == main_~i~0#1); 6172#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 6171#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 6167#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 6138#L12-2 [2023-11-29 02:30:08,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2023-11-29 02:30:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:08,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971455259] [2023-11-29 02:30:08,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:08,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:08,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:08,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:08,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 385709705, now seen corresponding path program 3 times [2023-11-29 02:30:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:08,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843921750] [2023-11-29 02:30:08,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:08,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:08,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:08,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:08,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:30:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2052422418, now seen corresponding path program 5 times [2023-11-29 02:30:08,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:30:08,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082503272] [2023-11-29 02:30:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:30:08,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:30:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:08,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:08,847 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:30:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:09,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:30:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:30:09,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 02:30:09 BoogieIcfgContainer [2023-11-29 02:30:09,333 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 02:30:09,334 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:30:09,334 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:30:09,334 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:30:09,335 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:30:01" (3/4) ... [2023-11-29 02:30:09,336 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 02:30:09,389 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:30:09,390 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:30:09,390 INFO L158 Benchmark]: Toolchain (without parser) took 8388.81ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 132.8MB in the beginning and 74.2MB in the end (delta: 58.6MB). Peak memory consumption was 105.8MB. Max. memory is 16.1GB. [2023-11-29 02:30:09,391 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:30:09,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.04ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 123.0MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:30:09,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.33ms. Allocated memory is still 163.6MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:30:09,392 INFO L158 Benchmark]: Boogie Preprocessor took 30.57ms. Allocated memory is still 163.6MB. Free memory was 121.7MB in the beginning and 120.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:30:09,392 INFO L158 Benchmark]: RCFGBuilder took 259.04ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 111.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:30:09,393 INFO L158 Benchmark]: BuchiAutomizer took 7820.75ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 111.2MB in the beginning and 77.3MB in the end (delta: 33.9MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. [2023-11-29 02:30:09,393 INFO L158 Benchmark]: Witness Printer took 55.81ms. Allocated memory is still 207.6MB. Free memory was 77.3MB in the beginning and 74.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 02:30:09,395 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 64.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.04ms. Allocated memory is still 163.6MB. Free memory was 132.1MB in the beginning and 123.0MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.33ms. Allocated memory is still 163.6MB. Free memory was 123.0MB in the beginning and 121.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.57ms. Allocated memory is still 163.6MB. Free memory was 121.7MB in the beginning and 120.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 259.04ms. Allocated memory is still 163.6MB. Free memory was 120.3MB in the beginning and 111.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7820.75ms. Allocated memory was 163.6MB in the beginning and 207.6MB in the end (delta: 44.0MB). Free memory was 111.2MB in the beginning and 77.3MB in the end (delta: 33.9MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. * Witness Printer took 55.81ms. Allocated memory is still 207.6MB. Free memory was 77.3MB in the beginning and 74.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 16 terminating modules (8 trivial, 6 deterministic, 2 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function ((-2 * i) + 1) and consists of 5 locations. One deterministic module has affine ranking function ((-2 * i) + 19) and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function ((-2 * i) + 1) and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function ((-2 * i) + 15) and consists of 14 locations. One nondeterministic module has affine ranking function ((-2 * i) + 19) and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 8 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 183 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.7s and 11 iterations. TraceHistogramMax:20. Analysis of lassos took 5.4s. Construction of modules took 0.4s. Büchi inclusion checks took 1.5s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 16. Automata minimization 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 465 StatesRemovedByMinimization, 16 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 [6, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 171/420 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 268 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 256 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 158 mSDtfsCounter, 646 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT2 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax175 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf93 smp90 dnf129 smp93 tf109 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 31ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=10, up=0] [L12] COND TRUE i == 10 [L13] up = 0 VAL [i=10, up=0] Loop: [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=10, up=0] [L12] COND TRUE i == 10 [L13] up = 0 VAL [i=10, up=0] Loop: [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 02:30:09,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-29 02:30:09,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2023-11-29 02:30:09,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-29 02:30:10,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 02:30:10,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d88e5ed-e562-4db3-a4c7-6670da4064ba/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)