./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:43:33,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:43:33,248 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-26 10:43:33,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:43:33,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:43:33,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:43:33,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:43:33,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:43:33,301 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:43:33,307 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:43:33,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:43:33,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:43:33,310 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:43:33,316 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 10:43:33,316 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 10:43:33,317 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 10:43:33,317 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 10:43:33,318 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 10:43:33,318 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 10:43:33,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:43:33,319 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 10:43:33,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:43:33,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:43:33,321 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 10:43:33,321 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 10:43:33,321 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 10:43:33,322 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:43:33,322 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:43:33,323 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 10:43:33,323 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:43:33,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:43:33,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:43:33,325 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:43:33,325 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:43:33,326 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 10:43:33,326 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_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2023-11-26 10:43:33,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:43:33,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:43:33,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:43:33,735 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:43:33,738 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:43:33,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2023-11-26 10:43:36,916 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:43:37,101 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:43:37,102 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2023-11-26 10:43:37,110 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/data/25e1d8583/62b3afec137e47d981c0881e6b33e4e6/FLAG34115876e [2023-11-26 10:43:37,125 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/data/25e1d8583/62b3afec137e47d981c0881e6b33e4e6 [2023-11-26 10:43:37,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:43:37,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:43:37,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:37,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:43:37,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:43:37,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22dfdb78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37, skipping insertion in model container [2023-11-26 10:43:37,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,157 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:43:37,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:37,317 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:43:37,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:43:37,345 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:43:37,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37 WrapperNode [2023-11-26 10:43:37,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:43:37,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:37,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:43:37,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:43:37,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,361 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,380 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-26 10:43:37,381 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:43:37,382 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:43:37,382 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:43:37,382 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:43:37,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,401 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-26 10:43:37,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,402 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,404 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,408 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,409 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:43:37,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:43:37,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:43:37,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:43:37,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (1/1) ... [2023-11-26 10:43:37,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:37,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:37,452 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:37,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 10:43:37,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:43:37,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:43:37,585 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:43:37,588 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:43:37,689 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:43:37,698 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:43:37,698 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 10:43:37,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:37 BoogieIcfgContainer [2023-11-26 10:43:37,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:43:37,701 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 10:43:37,701 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 10:43:37,705 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 10:43:37,706 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:43:37,707 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 10:43:37" (1/3) ... [2023-11-26 10:43:37,708 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68ff8853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:43:37, skipping insertion in model container [2023-11-26 10:43:37,708 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:43:37,708 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:43:37" (2/3) ... [2023-11-26 10:43:37,709 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68ff8853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 10:43:37, skipping insertion in model container [2023-11-26 10:43:37,709 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 10:43:37,709 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:37" (3/3) ... [2023-11-26 10:43:37,710 INFO L332 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2023-11-26 10:43:37,768 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 10:43:37,768 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 10:43:37,769 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 10:43:37,769 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 10:43:37,769 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 10:43:37,769 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 10:43:37,769 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 10:43:37,770 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 10:43:37,774 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) [2023-11-26 10:43:37,791 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 10:43:37,792 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:37,792 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:37,797 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:43:37,797 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:37,797 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 10:43:37,798 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) [2023-11-26 10:43:37,799 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 10:43:37,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:37,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:37,800 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 10:43:37,800 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:37,810 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4#L18-1true [2023-11-26 10:43:37,810 INFO L750 eck$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 [2023-11-26 10:43:37,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:37,819 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-26 10:43:37,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:37,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819076293] [2023-11-26 10:43:37,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:37,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:37,984 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:37,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:37,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-11-26 10:43:37,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:37,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910716796] [2023-11-26 10:43:37,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:37,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:38,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:38,035 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:38,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:38,037 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2023-11-26 10:43:38,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:38,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39379678] [2023-11-26 10:43:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:38,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:38,062 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:38,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:38,157 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:38,158 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:38,158 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:38,158 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:38,158 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:43:38,159 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,159 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:38,159 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:38,159 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2023-11-26 10:43:38,159 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:38,160 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:38,177 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:38,190 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:38,194 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:38,199 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:38,297 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:38,298 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:43:38,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,308 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:38,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:38,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-26 10:43:38,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:38,355 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: [] [2023-11-26 10:43:38,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,382 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:38,382 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:38,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-26 10:43:38,408 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:38,408 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: [] [2023-11-26 10:43:38,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,424 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,434 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:38,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:38,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-26 10:43:38,464 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:38,464 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: [] [2023-11-26 10:43:38,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-26 10:43:38,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-26 10:43:38,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:38,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:38,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,541 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:43:38,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:38,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-26 10:43:38,595 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:43:38,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,604 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:38,604 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:38,605 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:38,605 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:38,605 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:43:38,605 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,605 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:38,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:38,606 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2023-11-26 10:43:38,606 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:38,606 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:38,609 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:38,613 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:38,618 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:38,631 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:38,723 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:38,728 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:43:38,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,737 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 [2023-11-26 10:43:38,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-26 10:43:38,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:38,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:38,754 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:38,754 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:38,762 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-26 10:43:38,762 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-26 10:43:38,776 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:38,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,787 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-26 10:43:38,791 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 [2023-11-26 10:43:38,801 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:38,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:38,802 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:38,802 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:38,806 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-26 10:43:38,806 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-26 10:43:38,819 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:38,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,835 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,850 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 [2023-11-26 10:43:38,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:38,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:38,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:38,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:38,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:38,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-26 10:43:38,868 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:43:38,868 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:38,887 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:43:38,892 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:43:38,892 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 10:43:38,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:38,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:38,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:38,906 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:43:38,906 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:43:38,906 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:43:38,907 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 [] [2023-11-26 10:43:38,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-26 10:43:38,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:38,919 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:43:38,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:38,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:38,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:38,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:38,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:39,088 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 [2023-11-26 10:43:39,090 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) [2023-11-26 10:43:39,186 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. [2023-11-26 10:43:39,188 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 [2023-11-26 10:43:39,195 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) [2023-11-26 10:43:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2023-11-26 10:43:39,198 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-26 10:43:39,199 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:39,199 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-26 10:43:39,200 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:39,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 8 letters. [2023-11-26 10:43:39,200 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:39,201 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 51 transitions. [2023-11-26 10:43:39,208 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-26 10:43:39,214 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 19 states and 30 transitions. [2023-11-26 10:43:39,215 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-26 10:43:39,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-11-26 10:43:39,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2023-11-26 10:43:39,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:39,217 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2023-11-26 10:43:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2023-11-26 10:43:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-11-26 10:43:39,247 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) [2023-11-26 10:43:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2023-11-26 10:43:39,249 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-26 10:43:39,250 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-26 10:43:39,250 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-26 10:43:39,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2023-11-26 10:43:39,253 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-26 10:43:39,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:39,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:39,254 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-26 10:43:39,254 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:39,255 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 [2023-11-26 10:43:39,255 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 [2023-11-26 10:43:39,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-26 10:43:39,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:39,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847776358] [2023-11-26 10:43:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:39,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:39,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:39,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2023-11-26 10:43:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:39,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783161952] [2023-11-26 10:43:39,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:39,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:39,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:39,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2023-11-26 10:43:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551007172] [2023-11-26 10:43:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:39,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:39,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:39,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551007172] [2023-11-26 10:43:39,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551007172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:39,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:39,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545690356] [2023-11-26 10:43:39,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:39,474 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:39,475 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:39,475 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:39,475 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:39,475 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:43:39,475 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:39,478 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:39,479 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:39,480 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2023-11-26 10:43:39,480 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:39,480 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:39,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:39,486 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:39,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-26 10:43:39,543 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:39,552 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:39,645 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:39,646 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:43:39,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:39,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:39,647 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:39,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:39,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-26 10:43:39,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:39,691 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: [] [2023-11-26 10:43:39,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:39,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:39,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:39,702 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:39,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:39,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-26 10:43:39,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:39,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:39,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:39,751 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:43:39,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:39,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-26 10:43:39,848 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:43:39,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:39,852 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:39,852 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:39,853 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:39,853 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:39,853 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:43:39,853 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:39,853 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:39,853 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:39,853 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2023-11-26 10:43:39,853 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:39,853 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:39,855 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:39,864 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:39,874 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:39,878 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:39,973 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:39,974 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:43:39,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:39,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:39,975 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:39,981 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 [2023-11-26 10:43:39,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-26 10:43:39,994 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:39,995 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:39,995 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:39,995 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:40,000 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-26 10:43:40,001 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-26 10:43:40,013 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:40,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:40,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:40,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,024 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,033 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 [2023-11-26 10:43:40,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:40,045 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:40,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:40,046 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-26 10:43:40,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:40,051 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-26 10:43:40,051 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:40,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-26 10:43:40,071 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:43:40,085 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:43:40,085 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 10:43:40,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:40,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,088 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,097 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:43:40,097 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:43:40,097 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:43:40,097 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 [] [2023-11-26 10:43:40,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-26 10:43:40,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:40,107 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:43:40,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:40,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:40,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:40,171 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 [2023-11-26 10:43:40,172 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) [2023-11-26 10:43:40,205 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. [2023-11-26 10:43:40,206 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 [2023-11-26 10:43:40,207 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) [2023-11-26 10:43:40,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-26 10:43:40,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-26 10:43:40,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:40,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-26 10:43:40,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:40,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-26 10:43:40,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:40,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2023-11-26 10:43:40,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-26 10:43:40,212 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 35 transitions. [2023-11-26 10:43:40,212 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-26 10:43:40,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-26 10:43:40,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 35 transitions. [2023-11-26 10:43:40,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:40,213 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 35 transitions. [2023-11-26 10:43:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 35 transitions. [2023-11-26 10:43:40,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2023-11-26 10:43:40,215 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) [2023-11-26 10:43:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2023-11-26 10:43:40,217 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 34 transitions. [2023-11-26 10:43:40,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:40,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:40,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:40,225 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) [2023-11-26 10:43:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:40,239 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2023-11-26 10:43:40,239 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 52 transitions. [2023-11-26 10:43:40,241 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 10:43:40,242 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 46 transitions. [2023-11-26 10:43:40,242 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-26 10:43:40,242 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-11-26 10:43:40,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 46 transitions. [2023-11-26 10:43:40,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:40,243 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 46 transitions. [2023-11-26 10:43:40,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 46 transitions. [2023-11-26 10:43:40,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2023-11-26 10:43:40,246 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) [2023-11-26 10:43:40,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2023-11-26 10:43:40,247 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 45 transitions. [2023-11-26 10:43:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:40,248 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2023-11-26 10:43:40,248 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-26 10:43:40,248 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 45 transitions. [2023-11-26 10:43:40,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-26 10:43:40,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:40,249 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:40,250 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-26 10:43:40,250 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:40,250 INFO L748 eck$LassoCheckResult]: Stem: 239#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 243#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 248#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 230#L12-2 assume !(0 == main_~i~0#1); 232#L15-1 [2023-11-26 10:43:40,250 INFO L750 eck$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 [2023-11-26 10:43:40,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,251 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2023-11-26 10:43:40,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025321314] [2023-11-26 10:43:40,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:40,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:40,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:40,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2023-11-26 10:43:40,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795599969] [2023-11-26 10:43:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:40,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:40,282 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:40,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,283 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2023-11-26 10:43:40,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977309318] [2023-11-26 10:43:40,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:40,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:40,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:40,335 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:40,335 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:40,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:40,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:40,336 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:43:40,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:40,336 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:40,336 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:40,336 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2023-11-26 10:43:40,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:40,337 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:40,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:40,349 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:40,353 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:40,356 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:40,421 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:40,421 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:43:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:40,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,423 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-26 10:43:40,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:40,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:40,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,465 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-26 10:43:40,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:43:40,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:40,612 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:43:40,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:40,617 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:40,617 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:40,617 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:40,617 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:40,618 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:43:40,618 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:40,618 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:40,618 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:40,618 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2023-11-26 10:43:40,618 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:40,618 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:40,619 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:40,632 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:40,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:40,639 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:40,708 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:40,709 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:43:40,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:40,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,712 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-26 10:43:40,721 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 [2023-11-26 10:43:40,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:40,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:40,734 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:40,734 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:40,734 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:40,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:43:40,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:40,751 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:43:40,756 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:43:40,756 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 10:43:40,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:40,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:40,764 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:40,775 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:43:40,775 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:43:40,776 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:43:40,776 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 [] [2023-11-26 10:43:40,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-26 10:43:40,785 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:43:40,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:40,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:40,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-26 10:43:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:40,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:40,861 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 [2023-11-26 10:43:40,862 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) [2023-11-26 10:43:40,898 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. [2023-11-26 10:43:40,899 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 [2023-11-26 10:43:40,900 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) [2023-11-26 10:43:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-26 10:43:40,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2023-11-26 10:43:40,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:40,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-11-26 10:43:40,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:40,903 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2023-11-26 10:43:40,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:40,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 104 transitions. [2023-11-26 10:43:40,909 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-26 10:43:40,912 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 60 states and 98 transitions. [2023-11-26 10:43:40,914 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-11-26 10:43:40,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2023-11-26 10:43:40,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 98 transitions. [2023-11-26 10:43:40,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:40,914 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 98 transitions. [2023-11-26 10:43:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 98 transitions. [2023-11-26 10:43:40,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-11-26 10:43:40,924 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) [2023-11-26 10:43:40,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2023-11-26 10:43:40,926 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 94 transitions. [2023-11-26 10:43:40,927 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2023-11-26 10:43:40,927 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-26 10:43:40,927 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 94 transitions. [2023-11-26 10:43:40,932 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-26 10:43:40,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:40,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:40,933 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:43:40,933 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:40,934 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 [2023-11-26 10:43:40,934 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 [2023-11-26 10:43:40,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,934 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2023-11-26 10:43:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146160117] [2023-11-26 10:43:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:40,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:40,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146160117] [2023-11-26 10:43:40,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146160117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:40,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:40,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:40,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989081151] [2023-11-26 10:43:40,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:40,971 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:43:40,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:40,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1265322, now seen corresponding path program 1 times [2023-11-26 10:43:40,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:40,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307994976] [2023-11-26 10:43:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:40,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:40,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:40,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307994976] [2023-11-26 10:43:40,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307994976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:40,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:40,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:40,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335750848] [2023-11-26 10:43:40,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:40,993 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:43:40,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:40,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:40,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:40,994 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) [2023-11-26 10:43:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:41,007 INFO L93 Difference]: Finished difference Result 64 states and 97 transitions. [2023-11-26 10:43:41,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 64 states and 97 transitions. [2023-11-26 10:43:41,009 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 14 [2023-11-26 10:43:41,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 64 states to 61 states and 92 transitions. [2023-11-26 10:43:41,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2023-11-26 10:43:41,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2023-11-26 10:43:41,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 92 transitions. [2023-11-26 10:43:41,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:41,011 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 92 transitions. [2023-11-26 10:43:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 92 transitions. [2023-11-26 10:43:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-11-26 10:43:41,016 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) [2023-11-26 10:43:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 87 transitions. [2023-11-26 10:43:41,017 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 87 transitions. [2023-11-26 10:43:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:41,018 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 87 transitions. [2023-11-26 10:43:41,018 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-26 10:43:41,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 87 transitions. [2023-11-26 10:43:41,019 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-26 10:43:41,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:41,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:41,020 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:43:41,020 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:41,020 INFO L748 eck$LassoCheckResult]: Stem: 509#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 510#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 514#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 549#L12 assume !(10 == main_~i~0#1); 548#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 536#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 534#L18-1 [2023-11-26 10:43:41,021 INFO L750 eck$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 [2023-11-26 10:43:41,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:41,021 INFO L85 PathProgramCache]: Analyzing trace with hash 889694448, now seen corresponding path program 1 times [2023-11-26 10:43:41,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:41,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779466049] [2023-11-26 10:43:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:41,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:41,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:41,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779466049] [2023-11-26 10:43:41,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779466049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:41,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:41,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:43:41,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279602743] [2023-11-26 10:43:41,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:41,040 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:43:41,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 2 times [2023-11-26 10:43:41,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:41,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748793211] [2023-11-26 10:43:41,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:41,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:41,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:41,053 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:41,078 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:41,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:41,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:41,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:41,079 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:43:41,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:41,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:41,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2023-11-26 10:43:41,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:41,080 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:41,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,084 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,088 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,093 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,136 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:41,137 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:43:41,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,138 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:41,147 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:41,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-26 10:43:41,176 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:41,176 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: [] [2023-11-26 10:43:41,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:41,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,187 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:41,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:41,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-26 10:43:41,215 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:41,215 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: [] [2023-11-26 10:43:41,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:41,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,220 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-26 10:43:41,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:41,223 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:41,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:41,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,258 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:43:41,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:41,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-26 10:43:41,299 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:43:41,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:41,305 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:41,305 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:41,305 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:41,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:41,305 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:43:41,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:41,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:41,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2023-11-26 10:43:41,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:41,306 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:41,307 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,310 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,316 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,320 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,371 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:41,371 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:43:41,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,373 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-26 10:43:41,393 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:41,393 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:41,393 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:41,393 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:41,396 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-26 10:43:41,396 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-26 10:43:41,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-26 10:43:41,407 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:41,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:41,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,412 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-26 10:43:41,418 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 [2023-11-26 10:43:41,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:41,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:41,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:41,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:41,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:41,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:43:41,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:41,451 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:43:41,455 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:43:41,455 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 10:43:41,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,459 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,460 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:43:41,460 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:43:41,461 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:43:41,461 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 [] [2023-11-26 10:43:41,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-26 10:43:41,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:41,466 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:43:41,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:41,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:41,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:41,541 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 [2023-11-26 10:43:41,541 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) [2023-11-26 10:43:41,594 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. [2023-11-26 10:43:41,595 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 [2023-11-26 10:43:41,597 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) [2023-11-26 10:43:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-26 10:43:41,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-26 10:43:41,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:41,598 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-26 10:43:41,599 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:41,599 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 8 letters. [2023-11-26 10:43:41,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:41,601 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 122 states and 183 transitions. [2023-11-26 10:43:41,605 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2023-11-26 10:43:41,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 122 states to 110 states and 165 transitions. [2023-11-26 10:43:41,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2023-11-26 10:43:41,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2023-11-26 10:43:41,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 165 transitions. [2023-11-26 10:43:41,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:41,611 INFO L218 hiAutomatonCegarLoop]: Abstraction has 110 states and 165 transitions. [2023-11-26 10:43:41,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 165 transitions. [2023-11-26 10:43:41,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 96. [2023-11-26 10:43:41,624 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) [2023-11-26 10:43:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2023-11-26 10:43:41,628 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 148 transitions. [2023-11-26 10:43:41,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:41,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:43:41,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:43:41,629 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) [2023-11-26 10:43:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:41,642 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2023-11-26 10:43:41,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 95 transitions. [2023-11-26 10:43:41,643 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-26 10:43:41,644 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 62 states and 84 transitions. [2023-11-26 10:43:41,644 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2023-11-26 10:43:41,644 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2023-11-26 10:43:41,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 84 transitions. [2023-11-26 10:43:41,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:41,644 INFO L218 hiAutomatonCegarLoop]: Abstraction has 62 states and 84 transitions. [2023-11-26 10:43:41,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states and 84 transitions. [2023-11-26 10:43:41,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2023-11-26 10:43:41,656 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) [2023-11-26 10:43:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2023-11-26 10:43:41,658 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 80 transitions. [2023-11-26 10:43:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:43:41,661 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 80 transitions. [2023-11-26 10:43:41,661 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-26 10:43:41,661 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 80 transitions. [2023-11-26 10:43:41,664 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2023-11-26 10:43:41,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:41,664 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:41,666 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:41,666 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:41,666 INFO L748 eck$LassoCheckResult]: Stem: 905#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 906#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 911#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 920#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 918#L12-2 assume !(0 == main_~i~0#1); 907#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 942#L12 assume !(10 == main_~i~0#1); 896#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 897#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 937#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 934#L12 [2023-11-26 10:43:41,666 INFO L750 eck$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 [2023-11-26 10:43:41,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:41,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1179049836, now seen corresponding path program 1 times [2023-11-26 10:43:41,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:41,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602104076] [2023-11-26 10:43:41,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:41,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:41,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:41,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602104076] [2023-11-26 10:43:41,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602104076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:41,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300019626] [2023-11-26 10:43:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:41,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:41,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,741 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-26 10:43:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:41,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:43:41,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:41,789 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:41,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:41,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300019626] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:41,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:41,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-26 10:43:41,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74676944] [2023-11-26 10:43:41,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:41,822 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:43:41,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 2 times [2023-11-26 10:43:41,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:41,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770301739] [2023-11-26 10:43:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:41,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:41,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:41,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:41,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:41,868 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:41,869 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:41,869 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:41,869 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:41,869 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:43:41,869 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,869 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:41,869 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:41,870 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2023-11-26 10:43:41,870 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:41,870 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:41,871 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,879 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,883 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,886 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:41,962 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:41,962 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:43:41,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:41,967 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:41,996 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:41,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:41,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-26 10:43:42,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,030 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-26 10:43:42,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:43:42,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:42,129 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:43:42,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,134 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:42,135 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:42,135 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:42,135 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:42,135 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:43:42,135 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,135 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:42,135 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:42,135 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2023-11-26 10:43:42,135 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:42,135 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:42,136 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:42,150 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:42,154 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:42,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:42,237 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:42,238 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:43:42,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,239 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,248 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 [2023-11-26 10:43:42,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:42,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:42,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:42,261 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-26 10:43:42,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:42,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-26 10:43:42,264 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-26 10:43:42,264 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:42,279 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:43:42,293 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:43:42,293 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 10:43:42,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,294 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,298 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:43:42,298 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:43:42,298 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:43:42,298 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 [] [2023-11-26 10:43:42,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-26 10:43:42,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,308 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:43:42,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:42,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:42,375 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 [2023-11-26 10:43:42,375 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) [2023-11-26 10:43:42,412 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. [2023-11-26 10:43:42,412 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 [2023-11-26 10:43:42,413 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) [2023-11-26 10:43:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-26 10:43:42,414 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-26 10:43:42,414 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:42,414 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 10:43:42,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:42,484 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 [2023-11-26 10:43:42,485 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) [2023-11-26 10:43:42,509 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. [2023-11-26 10:43:42,509 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 [2023-11-26 10:43:42,510 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) [2023-11-26 10:43:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-26 10:43:42,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-26 10:43:42,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:42,511 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 10:43:42,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:42,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:42,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:42,568 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 [2023-11-26 10:43:42,569 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) [2023-11-26 10:43:42,599 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. [2023-11-26 10:43:42,600 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 [2023-11-26 10:43:42,601 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) [2023-11-26 10:43:42,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-26 10:43:42,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2023-11-26 10:43:42,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:42,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2023-11-26 10:43:42,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:42,602 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2023-11-26 10:43:42,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:42,603 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 150 transitions. [2023-11-26 10:43:42,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-26 10:43:42,605 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 66 states and 91 transitions. [2023-11-26 10:43:42,605 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-26 10:43:42,606 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-26 10:43:42,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 91 transitions. [2023-11-26 10:43:42,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:42,606 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 91 transitions. [2023-11-26 10:43:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 91 transitions. [2023-11-26 10:43:42,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-26 10:43:42,609 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) [2023-11-26 10:43:42,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 90 transitions. [2023-11-26 10:43:42,610 INFO L240 hiAutomatonCegarLoop]: Abstraction has 65 states and 90 transitions. [2023-11-26 10:43:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:42,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:43:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:43:42,611 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) [2023-11-26 10:43:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:42,647 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2023-11-26 10:43:42,647 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 98 states and 126 transitions. [2023-11-26 10:43:42,649 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2023-11-26 10:43:42,650 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 98 states to 88 states and 116 transitions. [2023-11-26 10:43:42,650 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2023-11-26 10:43:42,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2023-11-26 10:43:42,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 116 transitions. [2023-11-26 10:43:42,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:42,651 INFO L218 hiAutomatonCegarLoop]: Abstraction has 88 states and 116 transitions. [2023-11-26 10:43:42,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 116 transitions. [2023-11-26 10:43:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 73. [2023-11-26 10:43:42,654 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) [2023-11-26 10:43:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 97 transitions. [2023-11-26 10:43:42,655 INFO L240 hiAutomatonCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-26 10:43:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:43:42,656 INFO L428 stractBuchiCegarLoop]: Abstraction has 73 states and 97 transitions. [2023-11-26 10:43:42,656 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-26 10:43:42,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 97 transitions. [2023-11-26 10:43:42,657 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2023-11-26 10:43:42,657 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:42,657 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:42,658 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:43:42,658 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:42,658 INFO L748 eck$LassoCheckResult]: Stem: 1609#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1610#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1613#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1619#L12 assume !(10 == main_~i~0#1); 1617#L12-2 assume !(0 == main_~i~0#1); 1618#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1628#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1630#L12 assume !(10 == main_~i~0#1); 1653#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1664#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1661#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1608#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1615#L12-2 [2023-11-26 10:43:42,659 INFO L750 eck$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 [2023-11-26 10:43:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 2 times [2023-11-26 10:43:42,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:42,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035536427] [2023-11-26 10:43:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:43:42,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:42,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035536427] [2023-11-26 10:43:42,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035536427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:43:42,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:43:42,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:43:42,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475415136] [2023-11-26 10:43:42,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:43:42,692 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:43:42,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2023-11-26 10:43:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:42,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292418851] [2023-11-26 10:43:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:42,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:42,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:42,732 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:42,732 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:42,732 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:42,732 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:42,732 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:43:42,732 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:42,733 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:42,733 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2023-11-26 10:43:42,733 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:42,733 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:42,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:42,737 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:42,740 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:42,744 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:42,804 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:42,804 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:43:42,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,805 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:42,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:42,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-26 10:43:42,840 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:42,840 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: [] [2023-11-26 10:43:42,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,846 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:42,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:42,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-26 10:43:42,879 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:42,879 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: [] [2023-11-26 10:43:42,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,890 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:42,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:42,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-26 10:43:42,917 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:42,917 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: [] [2023-11-26 10:43:42,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,927 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,932 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:42,932 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:42,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-26 10:43:42,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:42,959 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:42,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:43:42,964 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:42,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-26 10:43:42,987 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:43:42,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:42,996 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:42,996 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:42,996 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:42,996 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:42,996 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:43:42,996 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:42,997 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:42,997 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:42,997 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2023-11-26 10:43:42,997 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:42,997 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:42,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,001 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,004 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,010 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,070 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:43,071 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:43:43,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,072 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,076 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 [2023-11-26 10:43:43,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-26 10:43:43,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:43,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:43,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:43,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:43,089 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-26 10:43:43,090 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-26 10:43:43,101 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:43,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,111 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-26 10:43:43,116 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 [2023-11-26 10:43:43,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:43,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:43,127 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:43,127 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:43,129 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-26 10:43:43,130 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-26 10:43:43,138 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:43,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,148 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,153 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 [2023-11-26 10:43:43,166 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:43,166 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:43,166 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:43,166 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-26 10:43:43,166 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:43,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-26 10:43:43,169 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-26 10:43:43,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:43,187 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:43,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,197 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,204 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 [2023-11-26 10:43:43,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:43,217 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:43,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:43,217 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:43,217 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:43,218 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:43:43,218 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:43,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-26 10:43:43,235 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:43:43,239 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:43:43,239 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-26 10:43:43,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,240 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-26 10:43:43,246 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:43:43,246 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:43:43,246 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:43:43,246 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 [] [2023-11-26 10:43:43,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,251 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:43:43,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:43,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:43,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:43,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:43,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:43,312 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 [2023-11-26 10:43:43,312 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) [2023-11-26 10:43:43,336 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. [2023-11-26 10:43:43,337 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 [2023-11-26 10:43:43,337 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) [2023-11-26 10:43:43,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-26 10:43:43,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2023-11-26 10:43:43,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:43,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2023-11-26 10:43:43,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:43,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2023-11-26 10:43:43,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:43,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 154 states and 214 transitions. [2023-11-26 10:43:43,340 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2023-11-26 10:43:43,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 154 states to 120 states and 159 transitions. [2023-11-26 10:43:43,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2023-11-26 10:43:43,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2023-11-26 10:43:43,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 159 transitions. [2023-11-26 10:43:43,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:43,342 INFO L218 hiAutomatonCegarLoop]: Abstraction has 120 states and 159 transitions. [2023-11-26 10:43:43,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states and 159 transitions. [2023-11-26 10:43:43,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 93. [2023-11-26 10:43:43,346 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) [2023-11-26 10:43:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2023-11-26 10:43:43,346 INFO L240 hiAutomatonCegarLoop]: Abstraction has 93 states and 124 transitions. [2023-11-26 10:43:43,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:43:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:43:43,347 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) [2023-11-26 10:43:43,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:43,380 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2023-11-26 10:43:43,380 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 146 transitions. [2023-11-26 10:43:43,381 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-26 10:43:43,382 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 112 states and 146 transitions. [2023-11-26 10:43:43,382 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2023-11-26 10:43:43,382 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2023-11-26 10:43:43,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 146 transitions. [2023-11-26 10:43:43,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:43,383 INFO L218 hiAutomatonCegarLoop]: Abstraction has 112 states and 146 transitions. [2023-11-26 10:43:43,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 146 transitions. [2023-11-26 10:43:43,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 100. [2023-11-26 10:43:43,391 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) [2023-11-26 10:43:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 130 transitions. [2023-11-26 10:43:43,392 INFO L240 hiAutomatonCegarLoop]: Abstraction has 100 states and 130 transitions. [2023-11-26 10:43:43,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:43:43,393 INFO L428 stractBuchiCegarLoop]: Abstraction has 100 states and 130 transitions. [2023-11-26 10:43:43,394 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-26 10:43:43,394 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 100 states and 130 transitions. [2023-11-26 10:43:43,394 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2023-11-26 10:43:43,395 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:43,395 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:43,397 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2023-11-26 10:43:43,397 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-26 10:43:43,397 INFO L748 eck$LassoCheckResult]: Stem: 2112#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 2113#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2118#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2124#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2125#L12-2 assume !(0 == main_~i~0#1); 2198#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2197#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2196#L12 assume !(10 == main_~i~0#1); 2194#L12-2 assume !(0 == main_~i~0#1); 2192#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2190#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2188#L12 assume !(10 == main_~i~0#1); 2186#L12-2 assume !(0 == main_~i~0#1); 2184#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2182#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2181#L12 assume !(10 == main_~i~0#1); 2171#L12-2 assume !(0 == main_~i~0#1); 2178#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2177#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2170#L12 assume !(10 == main_~i~0#1); 2169#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2163#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2167#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2166#L12 assume !(10 == main_~i~0#1); 2155#L12-2 assume !(0 == main_~i~0#1); 2157#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2156#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2154#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2127#L12-2 [2023-11-26 10:43:43,397 INFO L750 eck$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 [2023-11-26 10:43:43,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:43,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 3 times [2023-11-26 10:43:43,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:43,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724711028] [2023-11-26 10:43:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:43,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:43:43,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:43,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724711028] [2023-11-26 10:43:43,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724711028] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:43,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062304971] [2023-11-26 10:43:43,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 10:43:43,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:43,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,503 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-26 10:43:43,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-26 10:43:43,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:43,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:43,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:43:43,588 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 10:43:43,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062304971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:43,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:43,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2023-11-26 10:43:43,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110210549] [2023-11-26 10:43:43,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:43,642 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-26 10:43:43,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:43,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2023-11-26 10:43:43,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:43,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31492158] [2023-11-26 10:43:43,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:43,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:43,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:43,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:43,691 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:43,691 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:43,691 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:43,691 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:43,691 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:43:43,691 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,691 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:43,692 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:43,692 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2023-11-26 10:43:43,692 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:43,692 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:43,693 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,698 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,704 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,707 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,774 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:43,774 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:43:43,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,776 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:43,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:43,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-26 10:43:43,803 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:43,803 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: [] [2023-11-26 10:43:43,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,811 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:43,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-11-26 10:43:43,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,857 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:43:43,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:43,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-11-26 10:43:43,892 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:43:43,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:43,897 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:43,897 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:43,897 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:43,897 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:43,897 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:43:43,897 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,898 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:43,898 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:43,898 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2023-11-26 10:43:43,898 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:43,898 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:43,899 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,905 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,910 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,913 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:43,967 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:43,967 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:43:43,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:43,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:43,969 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:43,976 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 [2023-11-26 10:43:43,989 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:43,989 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:43,989 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:43,989 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2023-11-26 10:43:43,989 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:43,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-11-26 10:43:43,991 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2023-11-26 10:43:43,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:44,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:44,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:44,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:44,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:44,015 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:44,019 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 [2023-11-26 10:43:44,031 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:44,031 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:44,032 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:44,032 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:44,032 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:44,033 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:43:44,033 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:44,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-11-26 10:43:44,052 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:43:44,054 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-26 10:43:44,054 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 10:43:44,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:44,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:44,058 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:44,059 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:43:44,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:43:44,060 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:43:44,060 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 [] [2023-11-26 10:43:44,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-11-26 10:43:44,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:44,064 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:43:44,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:44,144 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 [2023-11-26 10:43:44,144 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) [2023-11-26 10:43:44,171 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. [2023-11-26 10:43:44,171 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 [2023-11-26 10:43:44,172 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) [2023-11-26 10:43:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-26 10:43:44,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-26 10:43:44,172 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:44,172 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 10:43:44,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:44,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:44,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:44,300 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 [2023-11-26 10:43:44,300 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) [2023-11-26 10:43:44,333 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. [2023-11-26 10:43:44,333 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 [2023-11-26 10:43:44,334 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) [2023-11-26 10:43:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-11-26 10:43:44,334 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-26 10:43:44,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:44,335 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-26 10:43:44,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,361 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:43:44,421 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 [2023-11-26 10:43:44,421 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) [2023-11-26 10:43:44,448 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. [2023-11-26 10:43:44,449 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 [2023-11-26 10:43:44,449 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) [2023-11-26 10:43:44,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-26 10:43:44,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-26 10:43:44,450 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:44,450 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2023-11-26 10:43:44,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:44,451 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2023-11-26 10:43:44,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:44,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 144 states and 191 transitions. [2023-11-26 10:43:44,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-26 10:43:44,454 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 144 states to 103 states and 133 transitions. [2023-11-26 10:43:44,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-26 10:43:44,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-26 10:43:44,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 133 transitions. [2023-11-26 10:43:44,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:44,455 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 133 transitions. [2023-11-26 10:43:44,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 133 transitions. [2023-11-26 10:43:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 71. [2023-11-26 10:43:44,457 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) [2023-11-26 10:43:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions. [2023-11-26 10:43:44,458 INFO L240 hiAutomatonCegarLoop]: Abstraction has 71 states and 91 transitions. [2023-11-26 10:43:44,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:44,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:43:44,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:43:44,458 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) [2023-11-26 10:43:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:44,564 INFO L93 Difference]: Finished difference Result 160 states and 198 transitions. [2023-11-26 10:43:44,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 198 transitions. [2023-11-26 10:43:44,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2023-11-26 10:43:44,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 158 states and 196 transitions. [2023-11-26 10:43:44,569 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-26 10:43:44,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-26 10:43:44,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 196 transitions. [2023-11-26 10:43:44,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:44,569 INFO L218 hiAutomatonCegarLoop]: Abstraction has 158 states and 196 transitions. [2023-11-26 10:43:44,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states and 196 transitions. [2023-11-26 10:43:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 111. [2023-11-26 10:43:44,573 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) [2023-11-26 10:43:44,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 137 transitions. [2023-11-26 10:43:44,574 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 137 transitions. [2023-11-26 10:43:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 10:43:44,575 INFO L428 stractBuchiCegarLoop]: Abstraction has 111 states and 137 transitions. [2023-11-26 10:43:44,575 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-26 10:43:44,575 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 137 transitions. [2023-11-26 10:43:44,576 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2023-11-26 10:43:44,576 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:44,576 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:44,577 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-26 10:43:44,578 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 10, 10, 6, 5, 1, 1] [2023-11-26 10:43:44,578 INFO L748 eck$LassoCheckResult]: Stem: 3362#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3363#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3357#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3358#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3354#L12-2 [2023-11-26 10:43:44,578 INFO L750 eck$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 [2023-11-26 10:43:44,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,579 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-26 10:43:44,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:44,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803942627] [2023-11-26 10:43:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:44,583 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:44,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:44,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash 752067982, now seen corresponding path program 1 times [2023-11-26 10:43:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:44,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71886237] [2023-11-26 10:43:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:44,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71886237] [2023-11-26 10:43:44,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71886237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:44,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367985084] [2023-11-26 10:43:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:44,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:44,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:44,774 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:44,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-26 10:43:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:44,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:43:44,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:44,898 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:44,898 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 10:43:45,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367985084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:45,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:45,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2023-11-26 10:43:45,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156636000] [2023-11-26 10:43:45,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:45,010 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-26 10:43:45,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:45,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:43:45,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:45,012 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) [2023-11-26 10:43:45,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:45,089 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2023-11-26 10:43:45,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 217 states and 266 transitions. [2023-11-26 10:43:45,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2023-11-26 10:43:45,093 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 217 states to 217 states and 266 transitions. [2023-11-26 10:43:45,093 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-11-26 10:43:45,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-26 10:43:45,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 217 states and 266 transitions. [2023-11-26 10:43:45,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:45,094 INFO L218 hiAutomatonCegarLoop]: Abstraction has 217 states and 266 transitions. [2023-11-26 10:43:45,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states and 266 transitions. [2023-11-26 10:43:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 143. [2023-11-26 10:43:45,098 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) [2023-11-26 10:43:45,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2023-11-26 10:43:45,100 INFO L240 hiAutomatonCegarLoop]: Abstraction has 143 states and 173 transitions. [2023-11-26 10:43:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:43:45,101 INFO L428 stractBuchiCegarLoop]: Abstraction has 143 states and 173 transitions. [2023-11-26 10:43:45,101 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-26 10:43:45,101 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 143 states and 173 transitions. [2023-11-26 10:43:45,102 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2023-11-26 10:43:45,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:45,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:45,104 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-26 10:43:45,105 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2023-11-26 10:43:45,105 INFO L748 eck$LassoCheckResult]: Stem: 3963#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3964#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3958#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3959#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 3955#L12-2 [2023-11-26 10:43:45,106 INFO L750 eck$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 [2023-11-26 10:43:45,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:45,107 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 2 times [2023-11-26 10:43:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:45,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408774873] [2023-11-26 10:43:45,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:45,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:45,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:45,113 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:45,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:45,116 INFO L85 PathProgramCache]: Analyzing trace with hash 240822066, now seen corresponding path program 2 times [2023-11-26 10:43:45,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:45,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998950567] [2023-11-26 10:43:45,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:45,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:45,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:45,152 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:45,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash 434182679, now seen corresponding path program 4 times [2023-11-26 10:43:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:45,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588493147] [2023-11-26 10:43:45,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-26 10:43:45,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:43:45,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588493147] [2023-11-26 10:43:45,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588493147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:43:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78280278] [2023-11-26 10:43:45,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 10:43:45,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:43:45,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:45,272 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:43:45,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-26 10:43:45,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 10:43:45,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:43:45,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:43:45,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-26 10:43:45,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:43:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 234 proven. 45 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-26 10:43:45,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78280278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:43:45,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:43:45,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-11-26 10:43:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489389993] [2023-11-26 10:43:45,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:43:45,882 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:45,882 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:45,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:45,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:45,883 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-26 10:43:45,883 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:45,883 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:45,883 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:45,883 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2023-11-26 10:43:45,883 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:45,884 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:45,885 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:45,888 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:45,895 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:45,898 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:45,966 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:45,966 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-26 10:43:45,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:45,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:45,968 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:45,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:45,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:45,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2023-11-26 10:43:46,008 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-26 10:43:46,008 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: [] [2023-11-26 10:43:46,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:46,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:46,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:46,015 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:46,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2023-11-26 10:43:46,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-26 10:43:46,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:46,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:46,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:46,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:46,044 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:46,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-11-26 10:43:46,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-26 10:43:46,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-26 10:43:46,063 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-26 10:43:46,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:46,066 INFO L210 LassoAnalysis]: Preferences: [2023-11-26 10:43:46,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-26 10:43:46,067 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-26 10:43:46,067 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-26 10:43:46,067 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-26 10:43:46,067 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:46,067 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-26 10:43:46,067 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-26 10:43:46,067 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2023-11-26 10:43:46,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-26 10:43:46,067 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-26 10:43:46,068 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:46,072 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:46,094 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:46,100 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-26 10:43:46,175 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-26 10:43:46,175 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-26 10:43:46,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:46,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:46,180 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:46,184 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 [2023-11-26 10:43:46,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-11-26 10:43:46,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:46,196 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:46,196 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:46,196 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:46,198 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-26 10:43:46,198 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-26 10:43:46,215 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-26 10:43:46,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:46,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:46,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:46,221 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:46,228 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 [2023-11-26 10:43:46,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-26 10:43:46,240 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-26 10:43:46,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-26 10:43:46,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-26 10:43:46,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-26 10:43:46,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-26 10:43:46,242 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-26 10:43:46,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-11-26 10:43:46,259 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-26 10:43:46,262 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-26 10:43:46,262 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-26 10:43:46,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 10:43:46,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:43:46,264 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 10:43:46,272 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-26 10:43:46,272 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-26 10:43:46,272 INFO L513 LassoAnalysis]: Proved termination. [2023-11-26 10:43:46,272 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 [] [2023-11-26 10:43:46,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2023-11-26 10:43:46,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:46,276 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-26 10:43:46,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:46,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:43:46,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:46,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:43:46,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-26 10:43:46,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:43:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 249 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-26 10:43:46,515 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 [2023-11-26 10:43:46,515 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) [2023-11-26 10:43:46,827 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. [2023-11-26 10:43:46,828 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 [2023-11-26 10:43:46,828 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) [2023-11-26 10:43:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 69 transitions. [2023-11-26 10:43:46,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 4 letters. Loop has 60 letters. [2023-11-26 10:43:46,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:46,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 64 letters. Loop has 60 letters. [2023-11-26 10:43:46,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:46,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 69 transitions. Stem has 4 letters. Loop has 120 letters. [2023-11-26 10:43:46,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-26 10:43:46,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 690 states and 839 transitions. [2023-11-26 10:43:46,839 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 61 [2023-11-26 10:43:46,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 690 states to 522 states and 629 transitions. [2023-11-26 10:43:46,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-26 10:43:46,844 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2023-11-26 10:43:46,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 629 transitions. [2023-11-26 10:43:46,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:46,845 INFO L218 hiAutomatonCegarLoop]: Abstraction has 522 states and 629 transitions. [2023-11-26 10:43:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 629 transitions. [2023-11-26 10:43:46,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 384. [2023-11-26 10:43:46,854 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) [2023-11-26 10:43:46,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 463 transitions. [2023-11-26 10:43:46,855 INFO L240 hiAutomatonCegarLoop]: Abstraction has 384 states and 463 transitions. [2023-11-26 10:43:46,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:43:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 10:43:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:43:46,856 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) [2023-11-26 10:43:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:43:46,931 INFO L93 Difference]: Finished difference Result 322 states and 385 transitions. [2023-11-26 10:43:46,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 322 states and 385 transitions. [2023-11-26 10:43:46,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 83 [2023-11-26 10:43:46,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 322 states to 272 states and 335 transitions. [2023-11-26 10:43:46,938 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-26 10:43:46,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-26 10:43:46,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 335 transitions. [2023-11-26 10:43:46,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-26 10:43:46,938 INFO L218 hiAutomatonCegarLoop]: Abstraction has 272 states and 335 transitions. [2023-11-26 10:43:46,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states and 335 transitions. [2023-11-26 10:43:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 183. [2023-11-26 10:43:46,944 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) [2023-11-26 10:43:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 223 transitions. [2023-11-26 10:43:46,945 INFO L240 hiAutomatonCegarLoop]: Abstraction has 183 states and 223 transitions. [2023-11-26 10:43:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:43:46,946 INFO L428 stractBuchiCegarLoop]: Abstraction has 183 states and 223 transitions. [2023-11-26 10:43:46,946 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-26 10:43:46,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 183 states and 223 transitions. [2023-11-26 10:43:46,947 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-26 10:43:46,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 10:43:46,948 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 10:43:46,951 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-26 10:43:46,951 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-26 10:43:46,951 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 [2023-11-26 10:43:46,955 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 [2023-11-26 10:43:46,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:46,956 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 3 times [2023-11-26 10:43:46,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:46,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575713184] [2023-11-26 10:43:46,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:46,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:46,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:46,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:46,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash 385709705, now seen corresponding path program 3 times [2023-11-26 10:43:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:46,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415991606] [2023-11-26 10:43:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:46,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:46,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:47,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:43:47,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2052422418, now seen corresponding path program 5 times [2023-11-26 10:43:47,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:43:47,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351872491] [2023-11-26 10:43:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:43:47,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:43:47,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:47,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:47,030 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 10:43:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:47,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 10:43:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 10:43:47,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 10:43:47 BoogieIcfgContainer [2023-11-26 10:43:47,698 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 10:43:47,699 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 10:43:47,699 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 10:43:47,699 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 10:43:47,700 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:43:37" (3/4) ... [2023-11-26 10:43:47,701 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 10:43:47,750 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 10:43:47,750 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 10:43:47,751 INFO L158 Benchmark]: Toolchain (without parser) took 10621.72ms. Allocated memory was 213.9MB in the beginning and 278.9MB in the end (delta: 65.0MB). Free memory was 169.2MB in the beginning and 115.3MB in the end (delta: 53.8MB). Peak memory consumption was 120.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:47,751 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 213.9MB. Free memory is still 190.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:47,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.71ms. Allocated memory is still 213.9MB. Free memory was 168.8MB in the beginning and 159.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:43:47,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.26ms. Allocated memory is still 213.9MB. Free memory was 159.1MB in the beginning and 157.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 10:43:47,752 INFO L158 Benchmark]: Boogie Preprocessor took 29.51ms. Allocated memory is still 213.9MB. Free memory was 157.9MB in the beginning and 156.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:47,753 INFO L158 Benchmark]: RCFGBuilder took 287.97ms. Allocated memory is still 213.9MB. Free memory was 156.6MB in the beginning and 147.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 10:43:47,753 INFO L158 Benchmark]: BuchiAutomizer took 9997.07ms. Allocated memory was 213.9MB in the beginning and 278.9MB in the end (delta: 65.0MB). Free memory was 147.0MB in the beginning and 118.5MB in the end (delta: 28.5MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. [2023-11-26 10:43:47,753 INFO L158 Benchmark]: Witness Printer took 51.10ms. Allocated memory is still 278.9MB. Free memory was 118.5MB in the beginning and 115.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 10:43:47,756 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 213.9MB. Free memory is still 190.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.71ms. Allocated memory is still 213.9MB. Free memory was 168.8MB in the beginning and 159.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.26ms. Allocated memory is still 213.9MB. Free memory was 159.1MB in the beginning and 157.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.51ms. Allocated memory is still 213.9MB. Free memory was 157.9MB in the beginning and 156.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 287.97ms. Allocated memory is still 213.9MB. Free memory was 156.6MB in the beginning and 147.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 9997.07ms. Allocated memory was 213.9MB in the beginning and 278.9MB in the end (delta: 65.0MB). Free memory was 147.0MB in the beginning and 118.5MB in the end (delta: 28.5MB). Peak memory consumption was 95.0MB. Max. memory is 16.1GB. * Witness Printer took 51.10ms. Allocated memory is still 278.9MB. Free memory was 118.5MB in the beginning and 115.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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 9.9s and 11 iterations. TraceHistogramMax:20. Analysis of lassos took 7.2s. Construction of modules took 0.5s. Büchi inclusion checks took 1.8s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 16. Automata minimization 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 465 StatesRemovedByMinimization, 16 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [6, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 171/420 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 268 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 256 mSDsluCounter, 186 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 158 mSDtfsCounter, 646 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI1 SFLT2 conc0 concLT2 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax175 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf93 smp90 dnf129 smp93 tf109 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s 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! [2023-11-26 10:43:47,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:47,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:48,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:48,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-26 10:43:48,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0890ad92-59cb-4030-becb-3338002624b1/bin/uautomizer-verify-VRDe98Ueme/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)