./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 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx --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 0.2.3-dev-527bcce [2023-11-21 21:00:39,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:39,208 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-21 21:00:39,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:39,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:39,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:39,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:39,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:39,266 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:00:39,272 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:00:39,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:39,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:39,275 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:39,278 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-21 21:00:39,279 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-21 21:00:39,279 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-21 21:00:39,280 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-21 21:00:39,281 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-21 21:00:39,281 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-21 21:00:39,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:39,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-21 21:00:39,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:00:39,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:39,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-21 21:00:39,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-21 21:00:39,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-21 21:00:39,286 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:00:39,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:00:39,287 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-21 21:00:39,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:39,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:39,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:39,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:39,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:00:39,290 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-21 21:00:39,291 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_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2023-11-21 21:00:39,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:39,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:39,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:39,610 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:39,611 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:39,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2023-11-21 21:00:42,765 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:42,962 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:42,962 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2023-11-21 21:00:42,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/data/2d7554f07/0d52672443644cafa3931e07d90eef83/FLAGdbb79f0bb [2023-11-21 21:00:42,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/data/2d7554f07/0d52672443644cafa3931e07d90eef83 [2023-11-21 21:00:42,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:42,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:43,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:43,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:43,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:43,012 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:42" (1/1) ... [2023-11-21 21:00:43,013 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d519d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43, skipping insertion in model container [2023-11-21 21:00:43,013 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:42" (1/1) ... [2023-11-21 21:00:43,032 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:00:43,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:43,185 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:00:43,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:43,220 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:00:43,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43 WrapperNode [2023-11-21 21:00:43,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:43,223 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:43,223 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:00:43,223 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:00:43,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,257 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-21 21:00:43,257 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:43,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:00:43,258 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:00:43,258 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:00:43,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,271 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,277 INFO L187 HeapSplitter]: Split 0 memory accesses to 0 slices as follows [] [2023-11-21 21:00:43,277 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,277 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,284 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,286 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:00:43,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:00:43,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:00:43,296 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:00:43,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (1/1) ... [2023-11-21 21:00:43,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:43,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:43,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:43,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-21 21:00:43,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:43,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:43,461 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:43,463 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:43,534 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:43,543 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:43,544 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:00:43,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:43 BoogieIcfgContainer [2023-11-21 21:00:43,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:43,547 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-21 21:00:43,547 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-21 21:00:43,551 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-21 21:00:43,551 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 21:00:43,552 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.11 09:00:42" (1/3) ... [2023-11-21 21:00:43,553 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72a29f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 09:00:43, skipping insertion in model container [2023-11-21 21:00:43,553 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 21:00:43,553 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:43" (2/3) ... [2023-11-21 21:00:43,554 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@72a29f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.11 09:00:43, skipping insertion in model container [2023-11-21 21:00:43,554 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-21 21:00:43,554 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:43" (3/3) ... [2023-11-21 21:00:43,555 INFO L332 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2023-11-21 21:00:43,610 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-21 21:00:43,611 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-21 21:00:43,611 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-21 21:00:43,611 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-21 21:00:43,611 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-21 21:00:43,611 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-21 21:00:43,611 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-21 21:00:43,612 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-21 21:00:43,616 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) [2023-11-21 21:00:43,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-21 21:00:43,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:43,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:43,638 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:43,639 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:43,639 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-21 21:00:43,639 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) [2023-11-21 21:00:43,640 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-21 21:00:43,641 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:43,641 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:43,641 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-21 21:00:43,641 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:43,649 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4#L18-1true [2023-11-21 21:00:43,649 INFO L750 eck$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 [2023-11-21 21:00:43,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:43,655 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-21 21:00:43,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:43,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431142160] [2023-11-21 21:00:43,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:43,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:43,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:43,784 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:43,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:43,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-11-21 21:00:43,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:43,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909646420] [2023-11-21 21:00:43,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:43,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:43,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:43,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:43,822 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:43,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:43,823 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2023-11-21 21:00:43,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:43,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579027787] [2023-11-21 21:00:43,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:43,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:43,834 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:43,841 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:43,940 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:43,940 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:43,940 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:43,941 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:43,941 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 21:00:43,941 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:43,941 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:43,941 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:43,941 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2023-11-21 21:00:43,942 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:43,942 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:43,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:43,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:44,011 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:44,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:44,094 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:44,094 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 21:00:44,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-21 21:00:44,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:44,105 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:44,121 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:44,121 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: [] [2023-11-21 21:00:44,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:44,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-21 21:00:44,144 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:44,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:44,169 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:44,170 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: [] [2023-11-21 21:00:44,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:44,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,208 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:44,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:44,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-21 21:00:44,251 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:44,252 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: [] [2023-11-21 21:00:44,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:44,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:44,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:44,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-21 21:00:44,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:44,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,321 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-21 21:00:44,324 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 21:00:44,324 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:44,350 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 21:00:44,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:44,364 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:44,365 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:44,365 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:44,365 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:44,365 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 21:00:44,365 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,365 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:44,365 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:44,366 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2023-11-21 21:00:44,366 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:44,366 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:44,368 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:44,376 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:44,383 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:44,390 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:44,443 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:44,448 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 21:00:44,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,451 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,460 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 [2023-11-21 21:00:44,473 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:44,473 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:44,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:44,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:44,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-21 21:00:44,483 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 21:00:44,483 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 21:00:44,503 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:44,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:44,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-21 21:00:44,538 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 [2023-11-21 21:00:44,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:44,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:44,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:44,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:44,554 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 21:00:44,555 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 21:00:44,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:44,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:44,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,600 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 [2023-11-21 21:00:44,612 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:44,612 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:44,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:44,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:44,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:44,615 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 21:00:44,615 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:44,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-21 21:00:44,619 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 21:00:44,632 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 21:00:44,633 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 21:00:44,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:44,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:44,680 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:44,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-21 21:00:44,682 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 21:00:44,682 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 21:00:44,682 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 21:00:44,683 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 [] [2023-11-21 21:00:44,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:44,698 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 21:00:44,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:44,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:44,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:44,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:44,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:44,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:44,868 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 [2023-11-21 21:00:44,870 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) [2023-11-21 21:00:44,955 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. [2023-11-21 21:00:44,957 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 [2023-11-21 21:00:44,963 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) [2023-11-21 21:00:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2023-11-21 21:00:44,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-21 21:00:44,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:44,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-21 21:00:44,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:44,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 8 letters. [2023-11-21 21:00:44,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:44,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 51 transitions. [2023-11-21 21:00:44,972 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-21 21:00:44,976 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 19 states and 30 transitions. [2023-11-21 21:00:44,978 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-21 21:00:44,978 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-11-21 21:00:44,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2023-11-21 21:00:44,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:44,979 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2023-11-21 21:00:45,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2023-11-21 21:00:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-11-21 21:00:45,013 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) [2023-11-21 21:00:45,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2023-11-21 21:00:45,015 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-21 21:00:45,015 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-21 21:00:45,015 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-21 21:00:45,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2023-11-21 21:00:45,017 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-21 21:00:45,017 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:45,017 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:45,017 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-21 21:00:45,017 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:45,018 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 [2023-11-21 21:00:45,018 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 [2023-11-21 21:00:45,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:45,019 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-21 21:00:45,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:45,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309689042] [2023-11-21 21:00:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:45,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:45,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:45,029 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:45,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:45,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2023-11-21 21:00:45,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:45,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133806051] [2023-11-21 21:00:45,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:45,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:45,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:45,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:45,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:45,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2023-11-21 21:00:45,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:45,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383321858] [2023-11-21 21:00:45,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:45,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:45,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:45,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383321858] [2023-11-21 21:00:45,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383321858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:45,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:45,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:45,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580183960] [2023-11-21 21:00:45,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:45,187 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:45,187 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:45,187 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:45,187 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:45,187 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 21:00:45,188 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,191 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:45,193 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:45,193 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2023-11-21 21:00:45,193 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:45,193 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:45,195 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:45,200 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:45,217 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:45,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:45,315 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:45,316 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 21:00:45,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:45,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:45,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:45,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:45,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-21 21:00:45,349 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:45,349 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: [] [2023-11-21 21:00:45,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:45,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:45,373 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:45,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:45,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:45,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-21 21:00:45,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-11-21 21:00:45,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:45,430 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:45,438 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 21:00:45,438 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:45,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-21 21:00:45,566 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 21:00:45,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:45,570 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:45,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:45,570 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:45,570 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:45,570 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 21:00:45,570 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,570 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:45,570 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:45,570 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2023-11-21 21:00:45,570 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:45,571 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:45,572 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:45,576 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:45,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:45,599 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:45,713 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:45,713 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 21:00:45,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:45,715 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:45,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-21 21:00:45,739 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 [2023-11-21 21:00:45,751 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:45,751 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:45,751 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:45,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:45,755 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 21:00:45,755 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 21:00:45,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:45,771 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:45,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:45,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:45,796 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:45,808 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 [2023-11-21 21:00:45,821 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:45,821 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:45,821 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:45,821 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-21 21:00:45,821 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:45,823 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-21 21:00:45,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:45,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-21 21:00:45,834 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 21:00:45,837 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 21:00:45,837 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 21:00:45,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:45,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:45,839 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:45,845 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 21:00:45,845 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 21:00:45,846 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 21:00:45,846 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 [] [2023-11-21 21:00:45,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-21 21:00:45,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:45,870 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 21:00:45,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:45,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:45,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:45,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:45,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:45,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:45,957 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 [2023-11-21 21:00:45,957 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) [2023-11-21 21:00:46,007 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. [2023-11-21 21:00:46,008 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 [2023-11-21 21:00:46,009 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) [2023-11-21 21:00:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-21 21:00:46,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-21 21:00:46,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:46,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-21 21:00:46,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:46,013 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-21 21:00:46,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:46,014 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2023-11-21 21:00:46,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-21 21:00:46,025 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 35 transitions. [2023-11-21 21:00:46,025 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-21 21:00:46,025 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-21 21:00:46,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 35 transitions. [2023-11-21 21:00:46,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:46,026 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 35 transitions. [2023-11-21 21:00:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 35 transitions. [2023-11-21 21:00:46,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-21 21:00:46,031 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) [2023-11-21 21:00:46,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2023-11-21 21:00:46,033 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 34 transitions. [2023-11-21 21:00:46,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:46,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:46,041 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) [2023-11-21 21:00:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:46,068 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2023-11-21 21:00:46,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 52 transitions. [2023-11-21 21:00:46,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-21 21:00:46,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 46 transitions. [2023-11-21 21:00:46,075 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-21 21:00:46,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-11-21 21:00:46,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 46 transitions. [2023-11-21 21:00:46,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:46,078 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 46 transitions. [2023-11-21 21:00:46,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 46 transitions. [2023-11-21 21:00:46,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-11-21 21:00:46,084 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) [2023-11-21 21:00:46,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2023-11-21 21:00:46,085 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 45 transitions. [2023-11-21 21:00:46,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:46,087 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2023-11-21 21:00:46,088 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-21 21:00:46,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 45 transitions. [2023-11-21 21:00:46,089 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-21 21:00:46,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:46,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:46,090 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-21 21:00:46,090 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:46,090 INFO L748 eck$LassoCheckResult]: Stem: 239#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 243#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 248#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 230#L12-2 assume !(0 == main_~i~0#1); 232#L15-1 [2023-11-21 21:00:46,090 INFO L750 eck$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 [2023-11-21 21:00:46,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,091 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2023-11-21 21:00:46,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353410999] [2023-11-21 21:00:46,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:46,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2023-11-21 21:00:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513445102] [2023-11-21 21:00:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:46,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,129 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2023-11-21 21:00:46,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495221359] [2023-11-21 21:00:46,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:46,183 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:46,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:46,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:46,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:46,184 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 21:00:46,184 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:46,184 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:46,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:46,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2023-11-21 21:00:46,184 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:46,184 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:46,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,197 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,201 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,204 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,266 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:46,267 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 21:00:46,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:46,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:46,268 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:46,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-21 21:00:46,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:46,272 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:46,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:46,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:46,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:46,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:46,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-21 21:00:46,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 21:00:46,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:46,461 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 21:00:46,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:46,467 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:46,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:46,467 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:46,467 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:46,467 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 21:00:46,467 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:46,467 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:46,467 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:46,467 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2023-11-21 21:00:46,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:46,468 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:46,469 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,485 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,489 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,565 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:46,565 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 21:00:46,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:46,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:46,566 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:46,573 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 [2023-11-21 21:00:46,585 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:46,585 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:46,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:46,586 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:46,586 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:46,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 21:00:46,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:46,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-21 21:00:46,603 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 21:00:46,606 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 21:00:46,606 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-21 21:00:46,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:46,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:46,612 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:46,624 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 21:00:46,624 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 21:00:46,624 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 21:00:46,624 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 [] [2023-11-21 21:00:46,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-21 21:00:46,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:46,648 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 21:00:46,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:46,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:46,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:46,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:46,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:46,726 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 [2023-11-21 21:00:46,727 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) [2023-11-21 21:00:46,757 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. [2023-11-21 21:00:46,757 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 [2023-11-21 21:00:46,758 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) [2023-11-21 21:00:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-21 21:00:46,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2023-11-21 21:00:46,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:46,759 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-11-21 21:00:46,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:46,760 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2023-11-21 21:00:46,760 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:46,760 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 104 transitions. [2023-11-21 21:00:46,762 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-21 21:00:46,763 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 60 states and 98 transitions. [2023-11-21 21:00:46,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-11-21 21:00:46,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2023-11-21 21:00:46,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 98 transitions. [2023-11-21 21:00:46,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:46,764 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 98 transitions. [2023-11-21 21:00:46,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 98 transitions. [2023-11-21 21:00:46,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-11-21 21:00:46,769 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) [2023-11-21 21:00:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2023-11-21 21:00:46,770 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 94 transitions. [2023-11-21 21:00:46,771 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2023-11-21 21:00:46,771 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-21 21:00:46,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 94 transitions. [2023-11-21 21:00:46,772 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-21 21:00:46,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:46,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:46,773 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:00:46,773 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:46,774 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 [2023-11-21 21:00:46,774 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 [2023-11-21 21:00:46,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,774 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2023-11-21 21:00:46,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682713612] [2023-11-21 21:00:46,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:46,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:46,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682713612] [2023-11-21 21:00:46,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682713612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:46,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:46,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:46,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055777744] [2023-11-21 21:00:46,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:46,799 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 21:00:46,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1265322, now seen corresponding path program 1 times [2023-11-21 21:00:46,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024861029] [2023-11-21 21:00:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:46,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024861029] [2023-11-21 21:00:46,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024861029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:46,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:46,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694308519] [2023-11-21 21:00:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:46,823 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:46,824 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) [2023-11-21 21:00:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:46,837 INFO L93 Difference]: Finished difference Result 64 states and 97 transitions. [2023-11-21 21:00:46,837 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 97 transitions. [2023-11-21 21:00:46,838 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2023-11-21 21:00:46,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 61 states and 92 transitions. [2023-11-21 21:00:46,840 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2023-11-21 21:00:46,840 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2023-11-21 21:00:46,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 92 transitions. [2023-11-21 21:00:46,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:46,841 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 92 transitions. [2023-11-21 21:00:46,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 92 transitions. [2023-11-21 21:00:46,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-11-21 21:00:46,847 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) [2023-11-21 21:00:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 87 transitions. [2023-11-21 21:00:46,851 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 87 transitions. [2023-11-21 21:00:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:46,852 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 87 transitions. [2023-11-21 21:00:46,853 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-21 21:00:46,853 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 87 transitions. [2023-11-21 21:00:46,854 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-21 21:00:46,854 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:46,854 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:46,854 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-21 21:00:46,855 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:46,855 INFO L748 eck$LassoCheckResult]: Stem: 509#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 510#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 514#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 549#L12 assume !(10 == main_~i~0#1); 548#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 536#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 534#L18-1 [2023-11-21 21:00:46,855 INFO L750 eck$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 [2023-11-21 21:00:46,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash 889694448, now seen corresponding path program 1 times [2023-11-21 21:00:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309711391] [2023-11-21 21:00:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:46,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:46,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:46,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309711391] [2023-11-21 21:00:46,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309711391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:46,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:46,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:46,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30946552] [2023-11-21 21:00:46,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:46,876 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 21:00:46,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:46,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 2 times [2023-11-21 21:00:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:46,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429396959] [2023-11-21 21:00:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:46,886 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:46,912 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:46,912 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:46,913 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:46,913 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:46,913 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 21:00:46,913 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:46,913 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:46,913 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:46,913 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2023-11-21 21:00:46,913 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:46,914 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:46,915 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,919 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,926 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,932 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:46,982 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:46,982 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 21:00:46,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:46,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:46,988 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:46,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:46,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:47,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-21 21:00:47,013 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:47,013 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: [] [2023-11-21 21:00:47,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,038 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,040 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:47,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:47,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-21 21:00:47,069 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:47,069 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: [] [2023-11-21 21:00:47,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,094 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:47,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:47,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-21 21:00:47,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,154 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,157 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 21:00:47,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:47,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-21 21:00:47,198 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 21:00:47,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,220 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:47,220 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:47,220 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:47,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:47,220 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 21:00:47,220 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,220 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:47,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:47,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2023-11-21 21:00:47,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:47,221 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:47,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:47,226 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:47,232 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:47,236 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:47,291 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:47,291 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 21:00:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,292 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,300 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 [2023-11-21 21:00:47,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-21 21:00:47,313 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:47,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:47,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:47,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:47,317 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 21:00:47,317 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 21:00:47,343 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:47,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,371 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,374 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 [2023-11-21 21:00:47,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-21 21:00:47,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:47,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:47,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:47,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:47,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:47,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 21:00:47,389 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:47,399 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 21:00:47,402 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 21:00:47,403 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 21:00:47,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,407 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,409 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 21:00:47,409 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 21:00:47,409 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 21:00:47,409 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 [] [2023-11-21 21:00:47,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-21 21:00:47,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,429 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 21:00:47,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:47,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:47,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:47,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:47,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:47,489 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 [2023-11-21 21:00:47,490 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) [2023-11-21 21:00:47,528 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. [2023-11-21 21:00:47,530 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 [2023-11-21 21:00:47,531 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) [2023-11-21 21:00:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-21 21:00:47,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-21 21:00:47,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:47,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-21 21:00:47,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:47,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 8 letters. [2023-11-21 21:00:47,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:47,533 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 122 states and 183 transitions. [2023-11-21 21:00:47,535 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2023-11-21 21:00:47,538 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 122 states to 110 states and 165 transitions. [2023-11-21 21:00:47,538 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2023-11-21 21:00:47,538 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2023-11-21 21:00:47,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 165 transitions. [2023-11-21 21:00:47,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:47,539 INFO L218 hiAutomatonCegarLoop]: Abstraction has 110 states and 165 transitions. [2023-11-21 21:00:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 165 transitions. [2023-11-21 21:00:47,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2023-11-21 21:00:47,546 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) [2023-11-21 21:00:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2023-11-21 21:00:47,548 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 148 transitions. [2023-11-21 21:00:47,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:47,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:47,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:47,549 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) [2023-11-21 21:00:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:47,560 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2023-11-21 21:00:47,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 95 transitions. [2023-11-21 21:00:47,561 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-21 21:00:47,562 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 62 states and 84 transitions. [2023-11-21 21:00:47,563 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2023-11-21 21:00:47,563 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2023-11-21 21:00:47,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 84 transitions. [2023-11-21 21:00:47,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:47,563 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 84 transitions. [2023-11-21 21:00:47,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 84 transitions. [2023-11-21 21:00:47,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2023-11-21 21:00:47,568 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) [2023-11-21 21:00:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2023-11-21 21:00:47,569 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 80 transitions. [2023-11-21 21:00:47,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:47,570 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 80 transitions. [2023-11-21 21:00:47,570 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-21 21:00:47,570 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 80 transitions. [2023-11-21 21:00:47,571 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-21 21:00:47,571 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:47,571 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:47,572 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:47,572 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:47,572 INFO L748 eck$LassoCheckResult]: Stem: 905#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 911#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 920#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 918#L12-2 assume !(0 == main_~i~0#1); 907#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 942#L12 assume !(10 == main_~i~0#1); 896#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 897#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 937#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 934#L12 [2023-11-21 21:00:47,573 INFO L750 eck$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 [2023-11-21 21:00:47,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1179049836, now seen corresponding path program 1 times [2023-11-21 21:00:47,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595471294] [2023-11-21 21:00:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:47,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:47,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595471294] [2023-11-21 21:00:47,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595471294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:47,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492962570] [2023-11-21 21:00:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,623 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-21 21:00:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:47,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:47,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:47,679 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492962570] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:47,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:47,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-21 21:00:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233987492] [2023-11-21 21:00:47,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:47,722 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 21:00:47,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:47,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 2 times [2023-11-21 21:00:47,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:47,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325877791] [2023-11-21 21:00:47,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:47,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:47,737 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:47,773 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:47,773 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:47,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:47,774 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:47,774 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 21:00:47,774 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,774 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:47,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:47,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2023-11-21 21:00:47,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:47,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:47,775 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:47,784 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:47,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,788 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:47,791 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:47,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-21 21:00:47,869 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:47,869 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 21:00:47,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,871 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:47,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:47,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-21 21:00:47,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:47,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:47,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:47,915 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:47,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 21:00:47,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:47,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-21 21:00:48,014 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 21:00:48,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-21 21:00:48,018 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:48,018 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:48,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:48,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:48,018 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 21:00:48,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:48,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:48,018 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2023-11-21 21:00:48,018 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:48,019 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:48,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:48,038 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:48,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:48,046 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:48,128 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:48,128 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 21:00:48,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:48,129 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:48,137 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 [2023-11-21 21:00:48,149 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:48,149 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:48,149 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:48,149 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-21 21:00:48,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:48,152 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-21 21:00:48,152 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:48,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-21 21:00:48,168 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 21:00:48,172 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 21:00:48,172 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 21:00:48,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:48,174 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:48,177 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 21:00:48,177 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 21:00:48,177 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 21:00:48,178 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 [] [2023-11-21 21:00:48,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-21 21:00:48,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:48,202 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 21:00:48,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:48,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:48,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:48,271 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 [2023-11-21 21:00:48,271 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) [2023-11-21 21:00:48,313 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. [2023-11-21 21:00:48,315 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 [2023-11-21 21:00:48,315 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) [2023-11-21 21:00:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-21 21:00:48,316 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-21 21:00:48,316 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:48,316 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 21:00:48,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:48,342 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:48,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:48,387 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 [2023-11-21 21:00:48,387 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) [2023-11-21 21:00:48,418 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. [2023-11-21 21:00:48,420 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 [2023-11-21 21:00:48,421 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) [2023-11-21 21:00:48,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-21 21:00:48,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-21 21:00:48,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:48,421 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 21:00:48,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:48,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:48,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:48,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:48,499 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 [2023-11-21 21:00:48,499 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) [2023-11-21 21:00:48,536 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. [2023-11-21 21:00:48,536 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 [2023-11-21 21:00:48,537 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) [2023-11-21 21:00:48,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-21 21:00:48,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-21 21:00:48,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:48,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2023-11-21 21:00:48,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:48,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-21 21:00:48,539 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:48,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 150 transitions. [2023-11-21 21:00:48,541 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-21 21:00:48,542 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 66 states and 91 transitions. [2023-11-21 21:00:48,543 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-21 21:00:48,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-21 21:00:48,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 91 transitions. [2023-11-21 21:00:48,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:48,543 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 91 transitions. [2023-11-21 21:00:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 91 transitions. [2023-11-21 21:00:48,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-21 21:00:48,548 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) [2023-11-21 21:00:48,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2023-11-21 21:00:48,549 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 90 transitions. [2023-11-21 21:00:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:00:48,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:00:48,550 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) [2023-11-21 21:00:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:48,588 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2023-11-21 21:00:48,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 126 transitions. [2023-11-21 21:00:48,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-21 21:00:48,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 88 states and 116 transitions. [2023-11-21 21:00:48,591 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2023-11-21 21:00:48,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2023-11-21 21:00:48,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 116 transitions. [2023-11-21 21:00:48,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:48,591 INFO L218 hiAutomatonCegarLoop]: Abstraction has 88 states and 116 transitions. [2023-11-21 21:00:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 116 transitions. [2023-11-21 21:00:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 73. [2023-11-21 21:00:48,596 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) [2023-11-21 21:00:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2023-11-21 21:00:48,597 INFO L240 hiAutomatonCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-21 21:00:48,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:00:48,598 INFO L428 stractBuchiCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-21 21:00:48,599 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-21 21:00:48,599 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 97 transitions. [2023-11-21 21:00:48,599 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2023-11-21 21:00:48,600 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:48,600 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:48,600 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:48,601 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:48,601 INFO L748 eck$LassoCheckResult]: Stem: 1609#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1610#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1613#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1619#L12 assume !(10 == main_~i~0#1); 1617#L12-2 assume !(0 == main_~i~0#1); 1618#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1628#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1630#L12 assume !(10 == main_~i~0#1); 1653#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1664#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1661#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1608#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1615#L12-2 [2023-11-21 21:00:48,601 INFO L750 eck$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 [2023-11-21 21:00:48,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 2 times [2023-11-21 21:00:48,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:48,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100681591] [2023-11-21 21:00:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:48,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 21:00:48,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:48,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100681591] [2023-11-21 21:00:48,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100681591] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:48,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:48,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:48,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209727856] [2023-11-21 21:00:48,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:48,648 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 21:00:48,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:48,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2023-11-21 21:00:48,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:48,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630812842] [2023-11-21 21:00:48,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:48,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:48,653 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:48,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:48,690 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:48,691 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:48,691 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:48,691 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:48,691 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 21:00:48,691 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,691 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:48,691 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:48,692 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2023-11-21 21:00:48,692 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:48,692 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:48,693 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:48,696 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:48,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:48,704 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:48,757 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:48,757 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 21:00:48,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:48,759 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:48,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:48,768 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:48,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-21 21:00:48,801 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:48,801 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: [] [2023-11-21 21:00:48,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:48,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:48,825 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:48,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:48,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:48,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-21 21:00:48,848 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:48,848 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: [] [2023-11-21 21:00:48,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-21 21:00:48,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:48,860 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:48,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-21 21:00:48,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:48,863 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:48,875 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:48,875 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: [] [2023-11-21 21:00:48,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:48,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:48,897 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:48,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-21 21:00:48,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:48,899 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:48,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-11-21 21:00:48,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:48,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:48,949 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:48,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-21 21:00:48,950 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 21:00:48,950 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:48,987 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 21:00:49,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,006 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:49,006 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:49,006 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:49,006 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:49,006 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 21:00:49,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:49,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:49,006 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2023-11-21 21:00:49,006 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:49,006 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:49,007 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,011 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,014 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,019 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,073 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:49,073 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 21:00:49,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,075 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,083 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 [2023-11-21 21:00:49,096 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:49,096 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:49,096 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:49,096 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:49,098 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 21:00:49,098 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 21:00:49,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-21 21:00:49,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:49,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,140 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,143 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-21 21:00:49,156 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:49,156 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:49,156 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:49,156 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:49,158 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 21:00:49,158 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 21:00:49,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-21 21:00:49,175 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:49,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,199 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,208 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 [2023-11-21 21:00:49,220 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:49,220 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:49,220 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:49,220 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-21 21:00:49,220 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:49,223 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-21 21:00:49,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:49,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-21 21:00:49,249 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:49,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,271 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,275 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 [2023-11-21 21:00:49,288 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:49,288 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:49,288 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:49,288 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:49,288 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:49,289 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 21:00:49,289 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:49,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-21 21:00:49,298 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 21:00:49,302 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 21:00:49,302 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-21 21:00:49,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,306 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,316 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 21:00:49,316 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 21:00:49,316 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 21:00:49,317 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 [] [2023-11-21 21:00:49,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-21 21:00:49,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,335 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 21:00:49,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:49,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:49,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:49,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:49,384 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:49,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:49,398 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 [2023-11-21 21:00:49,398 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) [2023-11-21 21:00:49,432 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. [2023-11-21 21:00:49,432 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 [2023-11-21 21:00:49,435 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) [2023-11-21 21:00:49,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-21 21:00:49,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2023-11-21 21:00:49,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:49,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2023-11-21 21:00:49,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:49,436 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2023-11-21 21:00:49,436 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:49,436 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 154 states and 214 transitions. [2023-11-21 21:00:49,439 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2023-11-21 21:00:49,440 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 154 states to 120 states and 159 transitions. [2023-11-21 21:00:49,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-11-21 21:00:49,441 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2023-11-21 21:00:49,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 159 transitions. [2023-11-21 21:00:49,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:49,442 INFO L218 hiAutomatonCegarLoop]: Abstraction has 120 states and 159 transitions. [2023-11-21 21:00:49,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states and 159 transitions. [2023-11-21 21:00:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2023-11-21 21:00:49,455 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) [2023-11-21 21:00:49,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2023-11-21 21:00:49,457 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 124 transitions. [2023-11-21 21:00:49,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:49,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:49,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:00:49,459 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) [2023-11-21 21:00:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:49,483 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2023-11-21 21:00:49,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 146 transitions. [2023-11-21 21:00:49,485 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-21 21:00:49,486 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 112 states and 146 transitions. [2023-11-21 21:00:49,486 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2023-11-21 21:00:49,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2023-11-21 21:00:49,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 146 transitions. [2023-11-21 21:00:49,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:49,488 INFO L218 hiAutomatonCegarLoop]: Abstraction has 112 states and 146 transitions. [2023-11-21 21:00:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 146 transitions. [2023-11-21 21:00:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-11-21 21:00:49,491 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) [2023-11-21 21:00:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 130 transitions. [2023-11-21 21:00:49,492 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100 states and 130 transitions. [2023-11-21 21:00:49,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:49,493 INFO L428 stractBuchiCegarLoop]: Abstraction has 100 states and 130 transitions. [2023-11-21 21:00:49,493 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-21 21:00:49,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 130 transitions. [2023-11-21 21:00:49,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-21 21:00:49,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:49,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:49,495 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2023-11-21 21:00:49,496 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-21 21:00:49,496 INFO L748 eck$LassoCheckResult]: Stem: 2112#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 2113#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2118#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2124#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2125#L12-2 assume !(0 == main_~i~0#1); 2198#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2197#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2196#L12 assume !(10 == main_~i~0#1); 2194#L12-2 assume !(0 == main_~i~0#1); 2192#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2190#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2188#L12 assume !(10 == main_~i~0#1); 2186#L12-2 assume !(0 == main_~i~0#1); 2184#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2182#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2181#L12 assume !(10 == main_~i~0#1); 2171#L12-2 assume !(0 == main_~i~0#1); 2178#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2177#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2170#L12 assume !(10 == main_~i~0#1); 2169#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2163#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2167#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2166#L12 assume !(10 == main_~i~0#1); 2155#L12-2 assume !(0 == main_~i~0#1); 2157#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2156#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2154#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2127#L12-2 [2023-11-21 21:00:49,496 INFO L750 eck$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 [2023-11-21 21:00:49,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:49,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 3 times [2023-11-21 21:00:49,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:49,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912019591] [2023-11-21 21:00:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:49,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:49,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 21:00:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:49,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912019591] [2023-11-21 21:00:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912019591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:49,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901960247] [2023-11-21 21:00:49,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 21:00:49,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:49,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,598 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-21 21:00:49,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 21:00:49,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:00:49,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:49,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:49,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-21 21:00:49,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:49,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,768 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-21 21:00:49,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901960247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:49,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:49,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-11-21 21:00:49,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495401683] [2023-11-21 21:00:49,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:49,769 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-21 21:00:49,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2023-11-21 21:00:49,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:49,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392643648] [2023-11-21 21:00:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:49,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:49,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:49,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:49,810 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:49,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:49,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:49,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:49,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 21:00:49,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:49,811 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:49,811 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2023-11-21 21:00:49,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:49,811 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:49,812 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,822 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,882 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:49,882 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 21:00:49,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,885 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:49,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:49,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-21 21:00:49,905 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:49,905 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: [] [2023-11-21 21:00:49,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-21 21:00:49,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,917 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-21 21:00:49,918 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:49,918 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:49,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:49,941 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:49,944 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 21:00:49,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:49,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-21 21:00:49,959 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 21:00:49,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:49,972 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:49,973 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:49,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:49,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:49,973 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 21:00:49,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:49,973 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:49,973 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:49,973 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2023-11-21 21:00:49,973 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:49,973 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:49,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,995 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:49,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:50,055 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:50,055 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 21:00:50,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:50,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:50,056 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:50,064 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 [2023-11-21 21:00:50,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:50,076 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:50,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:50,076 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-21 21:00:50,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:50,077 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-21 21:00:50,077 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:50,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-21 21:00:50,091 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:50,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:50,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:50,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:50,110 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:50,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-21 21:00:50,113 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 [2023-11-21 21:00:50,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:50,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:50,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:50,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:50,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:50,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 21:00:50,124 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:50,126 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 21:00:50,128 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-21 21:00:50,128 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 21:00:50,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:50,129 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:50,130 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 21:00:50,130 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 21:00:50,131 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 21:00:50,131 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 [] [2023-11-21 21:00:50,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-21 21:00:50,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-11-21 21:00:50,148 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 21:00:50,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:50,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:50,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:50,240 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 [2023-11-21 21:00:50,241 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) [2023-11-21 21:00:50,273 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. [2023-11-21 21:00:50,274 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 [2023-11-21 21:00:50,275 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) [2023-11-21 21:00:50,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-21 21:00:50,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-21 21:00:50,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:50,276 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 21:00:50,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:50,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:50,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:50,359 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 [2023-11-21 21:00:50,359 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) [2023-11-21 21:00:50,394 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. [2023-11-21 21:00:50,395 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 [2023-11-21 21:00:50,396 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) [2023-11-21 21:00:50,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-11-21 21:00:50,396 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-21 21:00:50,396 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:50,397 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-21 21:00:50,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:50,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,427 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:50,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:50,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:50,487 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 [2023-11-21 21:00:50,487 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) [2023-11-21 21:00:50,514 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. [2023-11-21 21:00:50,514 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 [2023-11-21 21:00:50,515 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) [2023-11-21 21:00:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-21 21:00:50,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-21 21:00:50,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:50,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2023-11-21 21:00:50,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:50,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2023-11-21 21:00:50,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:50,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 144 states and 191 transitions. [2023-11-21 21:00:50,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-21 21:00:50,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 144 states to 103 states and 133 transitions. [2023-11-21 21:00:50,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-21 21:00:50,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-21 21:00:50,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 133 transitions. [2023-11-21 21:00:50,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:50,520 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 133 transitions. [2023-11-21 21:00:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 133 transitions. [2023-11-21 21:00:50,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2023-11-21 21:00:50,523 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) [2023-11-21 21:00:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2023-11-21 21:00:50,523 INFO L240 hiAutomatonCegarLoop]: Abstraction has 71 states and 91 transitions. [2023-11-21 21:00:50,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:50,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 21:00:50,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 21:00:50,524 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) [2023-11-21 21:00:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:50,613 INFO L93 Difference]: Finished difference Result 160 states and 198 transitions. [2023-11-21 21:00:50,613 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 198 transitions. [2023-11-21 21:00:50,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2023-11-21 21:00:50,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 158 states and 196 transitions. [2023-11-21 21:00:50,617 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-21 21:00:50,617 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-21 21:00:50,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 196 transitions. [2023-11-21 21:00:50,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:50,617 INFO L218 hiAutomatonCegarLoop]: Abstraction has 158 states and 196 transitions. [2023-11-21 21:00:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states and 196 transitions. [2023-11-21 21:00:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 111. [2023-11-21 21:00:50,621 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) [2023-11-21 21:00:50,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2023-11-21 21:00:50,621 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 137 transitions. [2023-11-21 21:00:50,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 21:00:50,622 INFO L428 stractBuchiCegarLoop]: Abstraction has 111 states and 137 transitions. [2023-11-21 21:00:50,622 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-21 21:00:50,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 137 transitions. [2023-11-21 21:00:50,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2023-11-21 21:00:50,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:50,624 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:50,624 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-21 21:00:50,625 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 10, 10, 6, 5, 1, 1] [2023-11-21 21:00:50,625 INFO L748 eck$LassoCheckResult]: Stem: 3362#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3363#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3357#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3358#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3354#L12-2 [2023-11-21 21:00:50,625 INFO L750 eck$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 [2023-11-21 21:00:50,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-21 21:00:50,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:50,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437117270] [2023-11-21 21:00:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:50,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:50,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:50,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:50,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:50,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash 752067982, now seen corresponding path program 1 times [2023-11-21 21:00:50,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:50,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762642702] [2023-11-21 21:00:50,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:50,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-21 21:00:50,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:50,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762642702] [2023-11-21 21:00:50,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762642702] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:50,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444631647] [2023-11-21 21:00:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:50,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:50,807 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:50,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-21 21:00:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:50,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 21:00:50,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-21 21:00:50,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:50,991 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-21 21:00:50,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444631647] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:50,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:50,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2023-11-21 21:00:50,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142236158] [2023-11-21 21:00:50,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:50,993 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-21 21:00:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:00:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:00:50,994 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) [2023-11-21 21:00:51,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:51,066 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2023-11-21 21:00:51,066 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217 states and 266 transitions. [2023-11-21 21:00:51,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2023-11-21 21:00:51,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217 states to 217 states and 266 transitions. [2023-11-21 21:00:51,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-21 21:00:51,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-21 21:00:51,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 266 transitions. [2023-11-21 21:00:51,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:51,071 INFO L218 hiAutomatonCegarLoop]: Abstraction has 217 states and 266 transitions. [2023-11-21 21:00:51,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 266 transitions. [2023-11-21 21:00:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 143. [2023-11-21 21:00:51,075 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) [2023-11-21 21:00:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2023-11-21 21:00:51,076 INFO L240 hiAutomatonCegarLoop]: Abstraction has 143 states and 173 transitions. [2023-11-21 21:00:51,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 21:00:51,077 INFO L428 stractBuchiCegarLoop]: Abstraction has 143 states and 173 transitions. [2023-11-21 21:00:51,077 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-21 21:00:51,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states and 173 transitions. [2023-11-21 21:00:51,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2023-11-21 21:00:51,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:51,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:51,080 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-21 21:00:51,080 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2023-11-21 21:00:51,080 INFO L748 eck$LassoCheckResult]: Stem: 3963#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3964#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3958#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3959#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3955#L12-2 [2023-11-21 21:00:51,080 INFO L750 eck$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 [2023-11-21 21:00:51,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:51,081 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 2 times [2023-11-21 21:00:51,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:51,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947754676] [2023-11-21 21:00:51,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:51,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:51,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:51,086 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:51,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:51,087 INFO L85 PathProgramCache]: Analyzing trace with hash 240822066, now seen corresponding path program 2 times [2023-11-21 21:00:51,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:51,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567220331] [2023-11-21 21:00:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:51,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:51,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:51,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:51,162 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:51,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash 434182679, now seen corresponding path program 4 times [2023-11-21 21:00:51,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:51,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359020536] [2023-11-21 21:00:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:51,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:51,324 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-21 21:00:51,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:00:51,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359020536] [2023-11-21 21:00:51,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359020536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:00:51,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026707842] [2023-11-21 21:00:51,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 21:00:51,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:00:51,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:51,333 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:00:51,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-21 21:00:51,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 21:00:51,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:00:51,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:00:51,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-21 21:00:51,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:00:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-21 21:00:51,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026707842] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:00:51,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:00:51,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-11-21 21:00:51,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928730485] [2023-11-21 21:00:51,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:00:51,952 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:51,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:51,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:51,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:51,952 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-21 21:00:51,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:51,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:51,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:51,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2023-11-21 21:00:51,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:51,953 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:51,954 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:51,956 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:51,964 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:51,966 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:52,030 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:52,030 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-21 21:00:52,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:52,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:52,035 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:52,042 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:52,042 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:52,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2023-11-21 21:00:52,071 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-21 21:00:52,071 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: [] [2023-11-21 21:00:52,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:52,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:52,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:52,093 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:52,099 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-21 21:00:52,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:52,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2023-11-21 21:00:52,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:52,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:52,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:52,135 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:52,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-21 21:00:52,136 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-21 21:00:52,136 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-21 21:00:52,149 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-21 21:00:52,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2023-11-21 21:00:52,161 INFO L210 LassoAnalysis]: Preferences: [2023-11-21 21:00:52,161 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-21 21:00:52,161 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-21 21:00:52,161 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-21 21:00:52,161 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-21 21:00:52,161 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:52,161 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-21 21:00:52,161 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-21 21:00:52,161 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2023-11-21 21:00:52,161 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-21 21:00:52,162 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-21 21:00:52,162 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:52,165 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:52,173 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:52,177 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-21 21:00:52,256 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-21 21:00:52,256 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-21 21:00:52,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:52,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:52,258 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:52,267 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 [2023-11-21 21:00:52,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:52,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:52,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:52,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:52,281 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-21 21:00:52,281 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-21 21:00:52,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-21 21:00:52,292 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-21 21:00:52,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:52,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:52,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:52,313 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:52,315 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 [2023-11-21 21:00:52,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-21 21:00:52,329 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-21 21:00:52,329 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-21 21:00:52,329 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-21 21:00:52,329 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-21 21:00:52,329 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-21 21:00:52,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-21 21:00:52,330 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-21 21:00:52,345 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-21 21:00:52,360 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-21 21:00:52,360 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-21 21:00:52,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-21 21:00:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:52,367 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:52,372 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-21 21:00:52,372 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-21 21:00:52,372 INFO L513 LassoAnalysis]: Proved termination. [2023-11-21 21:00:52,372 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 [] [2023-11-21 21:00:52,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-21 21:00:52,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:52,392 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-21 21:00:52,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:52,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:00:52,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:52,436 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:00:52,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 249 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-21 21:00:52,598 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 [2023-11-21 21:00:52,598 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) [2023-11-21 21:00:52,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:52,962 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. [2023-11-21 21:00:52,963 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 [2023-11-21 21:00:52,964 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) [2023-11-21 21:00:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 69 transitions. [2023-11-21 21:00:52,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 4 letters. Loop has 60 letters. [2023-11-21 21:00:52,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:52,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 64 letters. Loop has 60 letters. [2023-11-21 21:00:52,968 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:52,968 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 4 letters. Loop has 120 letters. [2023-11-21 21:00:52,969 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-21 21:00:52,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 690 states and 839 transitions. [2023-11-21 21:00:52,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2023-11-21 21:00:52,980 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 690 states to 522 states and 629 transitions. [2023-11-21 21:00:52,981 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-21 21:00:52,981 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2023-11-21 21:00:52,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 629 transitions. [2023-11-21 21:00:52,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:52,982 INFO L218 hiAutomatonCegarLoop]: Abstraction has 522 states and 629 transitions. [2023-11-21 21:00:52,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 629 transitions. [2023-11-21 21:00:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 384. [2023-11-21 21:00:52,991 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) [2023-11-21 21:00:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 463 transitions. [2023-11-21 21:00:52,994 INFO L240 hiAutomatonCegarLoop]: Abstraction has 384 states and 463 transitions. [2023-11-21 21:00:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:00:52,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 21:00:52,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:00:52,996 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) [2023-11-21 21:00:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:00:53,072 INFO L93 Difference]: Finished difference Result 322 states and 385 transitions. [2023-11-21 21:00:53,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 385 transitions. [2023-11-21 21:00:53,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2023-11-21 21:00:53,078 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 272 states and 335 transitions. [2023-11-21 21:00:53,078 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-21 21:00:53,079 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-21 21:00:53,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 335 transitions. [2023-11-21 21:00:53,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-21 21:00:53,079 INFO L218 hiAutomatonCegarLoop]: Abstraction has 272 states and 335 transitions. [2023-11-21 21:00:53,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states and 335 transitions. [2023-11-21 21:00:53,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 183. [2023-11-21 21:00:53,084 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) [2023-11-21 21:00:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 223 transitions. [2023-11-21 21:00:53,085 INFO L240 hiAutomatonCegarLoop]: Abstraction has 183 states and 223 transitions. [2023-11-21 21:00:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 21:00:53,086 INFO L428 stractBuchiCegarLoop]: Abstraction has 183 states and 223 transitions. [2023-11-21 21:00:53,086 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-21 21:00:53,086 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 183 states and 223 transitions. [2023-11-21 21:00:53,087 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-21 21:00:53,087 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-21 21:00:53,087 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-21 21:00:53,091 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-21 21:00:53,091 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-21 21:00:53,091 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 [2023-11-21 21:00:53,093 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 [2023-11-21 21:00:53,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,094 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2023-11-21 21:00:53,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159008919] [2023-11-21 21:00:53,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:53,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,103 INFO L85 PathProgramCache]: Analyzing trace with hash 385709705, now seen corresponding path program 3 times [2023-11-21 21:00:53,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398535138] [2023-11-21 21:00:53,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,144 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:53,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2052422418, now seen corresponding path program 5 times [2023-11-21 21:00:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:00:53,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181829246] [2023-11-21 21:00:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:00:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 21:00:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,812 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 21:00:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 21:00:53,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.11 09:00:53 BoogieIcfgContainer [2023-11-21 21:00:53,853 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-21 21:00:53,853 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:00:53,853 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:00:53,854 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:00:53,854 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:43" (3/4) ... [2023-11-21 21:00:53,856 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-21 21:00:53,903 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 21:00:53,903 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:00:53,904 INFO L158 Benchmark]: Toolchain (without parser) took 10906.16ms. Allocated memory was 125.8MB in the beginning and 205.5MB in the end (delta: 79.7MB). Free memory was 80.9MB in the beginning and 64.6MB in the end (delta: 16.2MB). Peak memory consumption was 98.8MB. Max. memory is 16.1GB. [2023-11-21 21:00:53,904 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:53,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.71ms. Allocated memory is still 125.8MB. Free memory was 80.9MB in the beginning and 71.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-21 21:00:53,905 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.49ms. Allocated memory is still 125.8MB. Free memory was 71.4MB in the beginning and 70.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:00:53,906 INFO L158 Benchmark]: Boogie Preprocessor took 35.70ms. Allocated memory is still 125.8MB. Free memory was 70.1MB in the beginning and 68.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:00:53,906 INFO L158 Benchmark]: RCFGBuilder took 250.51ms. Allocated memory is still 125.8MB. Free memory was 68.4MB in the beginning and 60.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 21:00:53,906 INFO L158 Benchmark]: BuchiAutomizer took 10306.08ms. Allocated memory was 125.8MB in the beginning and 205.5MB in the end (delta: 79.7MB). Free memory was 60.0MB in the beginning and 67.8MB in the end (delta: -7.7MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. [2023-11-21 21:00:53,907 INFO L158 Benchmark]: Witness Printer took 50.18ms. Allocated memory is still 205.5MB. Free memory was 67.8MB in the beginning and 64.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 21:00:53,909 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 125.8MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.71ms. Allocated memory is still 125.8MB. Free memory was 80.9MB in the beginning and 71.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.49ms. Allocated memory is still 125.8MB. Free memory was 71.4MB in the beginning and 70.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.70ms. Allocated memory is still 125.8MB. Free memory was 70.1MB in the beginning and 68.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 250.51ms. Allocated memory is still 125.8MB. Free memory was 68.4MB in the beginning and 60.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 10306.08ms. Allocated memory was 125.8MB in the beginning and 205.5MB in the end (delta: 79.7MB). Free memory was 60.0MB in the beginning and 67.8MB in the end (delta: -7.7MB). Peak memory consumption was 73.7MB. Max. memory is 16.1GB. * Witness Printer took 50.18ms. Allocated memory is still 205.5MB. Free memory was 67.8MB in the beginning and 64.6MB 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 10.2s and 11 iterations. TraceHistogramMax:20. Analysis of lassos took 7.5s. Construction of modules took 0.5s. Büchi inclusion checks took 1.9s. 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, 0.7s 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: 54ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.2s 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! [2023-11-21 21:00:53,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:54,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:54,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:54,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-21 21:00:54,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99573a7e-686c-4bd8-9982-885636f1b9df/bin/uautomizer-verify-bycVGegfSx/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)