./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:28:51,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:28:51,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-29 02:28:51,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:28:51,802 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:28:51,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:28:51,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:28:51,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:28:51,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:28:51,830 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:28:51,831 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:28:51,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:28:51,832 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:28:51,832 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 02:28:51,833 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 02:28:51,833 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 02:28:51,834 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 02:28:51,835 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 02:28:51,835 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 02:28:51,835 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:28:51,836 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 02:28:51,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:28:51,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:28:51,837 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 02:28:51,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 02:28:51,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 02:28:51,839 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:28:51,839 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:28:51,839 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 02:28:51,840 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:28:51,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:28:51,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:28:51,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:28:51,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:28:51,842 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 02:28:51,853 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_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 [2023-11-29 02:28:52,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:28:52,103 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:28:52,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:28:52,107 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:28:52,108 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:28:52,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2023-11-29 02:28:54,843 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:28:55,003 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:28:55,003 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2023-11-29 02:28:55,009 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/data/3031e50c9/0e8295dba4524c3589990246cf5ddcc3/FLAG1904bbcd2 [2023-11-29 02:28:55,023 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/data/3031e50c9/0e8295dba4524c3589990246cf5ddcc3 [2023-11-29 02:28:55,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:28:55,027 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:28:55,028 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:28:55,029 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:28:55,034 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:28:55,035 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,036 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec7e70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55, skipping insertion in model container [2023-11-29 02:28:55,036 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,055 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:28:55,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:28:55,199 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:28:55,214 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:28:55,230 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:28:55,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55 WrapperNode [2023-11-29 02:28:55,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:28:55,232 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:28:55,232 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:28:55,232 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:28:55,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,245 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,264 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-11-29 02:28:55,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:28:55,265 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:28:55,265 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:28:55,266 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:28:55,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,286 INFO L175 MemorySlicer]: No memory access in input program. [2023-11-29 02:28:55,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,288 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,292 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,293 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:28:55,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:28:55,296 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:28:55,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:28:55,297 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (1/1) ... [2023-11-29 02:28:55,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:55,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:55,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:55,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 02:28:55,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:28:55,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:28:55,456 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:28:55,458 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:28:55,520 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:28:55,529 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:28:55,530 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:28:55,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:28:55 BoogieIcfgContainer [2023-11-29 02:28:55,532 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:28:55,533 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 02:28:55,533 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 02:28:55,537 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 02:28:55,538 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:28:55,538 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 02:28:55" (1/3) ... [2023-11-29 02:28:55,539 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4380c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 02:28:55, skipping insertion in model container [2023-11-29 02:28:55,539 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:28:55,539 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:28:55" (2/3) ... [2023-11-29 02:28:55,540 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4380c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 02:28:55, skipping insertion in model container [2023-11-29 02:28:55,540 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 02:28:55,540 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:28:55" (3/3) ... [2023-11-29 02:28:55,542 INFO L332 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2023-11-29 02:28:55,590 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 02:28:55,590 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 02:28:55,590 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 02:28:55,591 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 02:28:55,591 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 02:28:55,591 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 02:28:55,591 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 02:28:55,591 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 02:28:55,595 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:55,609 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-29 02:28:55,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:55,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:55,613 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:28:55,613 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:55,613 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 02:28:55,613 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:55,614 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-29 02:28:55,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:55,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:55,615 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 02:28:55,615 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:55,621 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4#L18-1true [2023-11-29 02:28:55,621 INFO L750 eck$LassoCheckResult]: Loop: 4#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 10#L12true assume !(main_~i~0#1 >= 10); 2#L12-2true assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 7#L15-1true assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4#L18-1true [2023-11-29 02:28:55,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 02:28:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:55,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940430354] [2023-11-29 02:28:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:55,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:55,732 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:55,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2023-11-29 02:28:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:55,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319776805] [2023-11-29 02:28:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:55,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:55,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:55,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:55,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2023-11-29 02:28:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:55,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795118638] [2023-11-29 02:28:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:55,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:55,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:55,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:55,874 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:55,875 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:55,875 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:55,875 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:55,875 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:28:55,876 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:55,876 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:55,876 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:55,876 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2023-11-29 02:28:55,876 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:55,876 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:55,895 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:55,907 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:55,911 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:55,916 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:55,991 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:55,992 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:28:55,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:55,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:55,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 02:28:56,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:56,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:56,025 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:28:56,025 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:28:56,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:56,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,038 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 02:28:56,041 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:56,041 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:56,062 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:28:56,062 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:28:56,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 02:28:56,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 02:28:56,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:56,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:56,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:28:56,092 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:28:56,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 02:28:56,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,098 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 02:28:56,101 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:56,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:56,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 02:28:56,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,126 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 02:28:56,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:28:56,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:56,149 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:28:56,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 02:28:56,152 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:56,152 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:56,153 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:56,153 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:56,153 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:28:56,153 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,153 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:56,153 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:56,153 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2023-11-29 02:28:56,153 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:56,154 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:56,156 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,163 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,168 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,175 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,230 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:56,235 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:28:56,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 02:28:56,242 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:56,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:56,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:56,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:56,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:56,262 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:28:56,262 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:28:56,270 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:28:56,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-11-29 02:28:56,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,278 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-29 02:28:56,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:56,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:56,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:56,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:56,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:56,314 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:28:56,315 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:28:56,321 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:28:56,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:56,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,326 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 02:28:56,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:56,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:56,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:28:56,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:56,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:56,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:56,350 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:28:56,362 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:28:56,365 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:28:56,368 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:28:56,369 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:28:56,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,389 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 02:28:56,391 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:28:56,391 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:28:56,391 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:28:56,391 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2023-11-29 02:28:56,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-11-29 02:28:56,398 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:28:56,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:56,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:56,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:56,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:56,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:56,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:56,511 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:28:56,513 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:56,581 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 32 states and 51 transitions. Complement of second has 8 states. [2023-11-29 02:28:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2023-11-29 02:28:56,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-29 02:28:56,590 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:56,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-29 02:28:56,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:56,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 2 letters. Loop has 8 letters. [2023-11-29 02:28:56,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:56,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 51 transitions. [2023-11-29 02:28:56,596 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-29 02:28:56,600 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 19 states and 30 transitions. [2023-11-29 02:28:56,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-29 02:28:56,602 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2023-11-29 02:28:56,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2023-11-29 02:28:56,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:56,603 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2023-11-29 02:28:56,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2023-11-29 02:28:56,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2023-11-29 02:28:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2023-11-29 02:28:56,627 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-29 02:28:56,627 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2023-11-29 02:28:56,627 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 02:28:56,627 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2023-11-29 02:28:56,628 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-29 02:28:56,628 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:56,628 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:56,629 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-29 02:28:56,629 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:56,629 INFO L748 eck$LassoCheckResult]: Stem: 96#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 97#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 101#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 93#L12 [2023-11-29 02:28:56,629 INFO L750 eck$LassoCheckResult]: Loop: 93#L12 assume !(main_~i~0#1 >= 10); 102#L12-2 assume !(main_~i~0#1 <= 0); 103#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 92#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 93#L12 [2023-11-29 02:28:56,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-29 02:28:56,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549066819] [2023-11-29 02:28:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:56,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:56,637 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:56,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:56,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:56,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2023-11-29 02:28:56,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:56,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244716822] [2023-11-29 02:28:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:56,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:56,649 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:56,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:56,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2023-11-29 02:28:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:56,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345720551] [2023-11-29 02:28:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:56,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345720551] [2023-11-29 02:28:56,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345720551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:28:56,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:28:56,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:28:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652216490] [2023-11-29 02:28:56,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:28:56,748 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:56,749 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:56,749 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:56,749 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:56,749 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:28:56,749 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,749 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:56,749 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:56,749 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2023-11-29 02:28:56,750 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:56,750 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:56,751 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,758 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,766 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,771 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,821 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:56,822 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:28:56,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,824 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 02:28:56,827 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:56,827 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:56,851 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:28:56,851 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:28:56,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:56,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,857 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-29 02:28:56,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:56,866 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:56,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:56,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,886 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 02:28:56,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:28:56,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:56,922 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:28:56,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:56,926 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:56,927 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:56,927 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:56,927 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:56,927 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:28:56,927 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,927 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:56,927 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:56,927 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2023-11-29 02:28:56,927 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:56,928 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:56,929 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,933 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,941 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,945 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:56,991 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:56,992 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:28:56,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:56,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:56,993 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:56,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 02:28:56,997 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:57,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:57,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:57,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:57,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:57,014 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:28:57,014 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:28:57,019 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:28:57,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-29 02:28:57,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:57,024 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:57,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 02:28:57,027 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:57,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:57,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:28:57,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:57,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:57,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:57,039 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:28:57,039 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:28:57,043 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:28:57,047 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:28:57,047 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:28:57,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:57,050 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:57,057 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:28:57,057 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:28:57,057 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:28:57,057 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2023-11-29 02:28:57,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-29 02:28:57,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-29 02:28:57,065 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:28:57,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:57,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:57,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,152 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-29 02:28:57,152 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,189 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 44 states and 73 transitions. Complement of second has 7 states. [2023-11-29 02:28:57,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:57,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-29 02:28:57,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 4 letters. [2023-11-29 02:28:57,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:57,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-29 02:28:57,191 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:57,191 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 8 letters. [2023-11-29 02:28:57,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:57,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 73 transitions. [2023-11-29 02:28:57,194 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-29 02:28:57,196 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 36 states and 59 transitions. [2023-11-29 02:28:57,196 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-29 02:28:57,196 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2023-11-29 02:28:57,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 59 transitions. [2023-11-29 02:28:57,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:57,196 INFO L218 hiAutomatonCegarLoop]: Abstraction has 36 states and 59 transitions. [2023-11-29 02:28:57,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 59 transitions. [2023-11-29 02:28:57,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2023-11-29 02:28:57,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2023-11-29 02:28:57,200 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 46 transitions. [2023-11-29 02:28:57,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:28:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:28:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:28:57,204 INFO L87 Difference]: Start difference. First operand 28 states and 46 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:28:57,215 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2023-11-29 02:28:57,215 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 56 transitions. [2023-11-29 02:28:57,217 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-29 02:28:57,218 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 32 states and 49 transitions. [2023-11-29 02:28:57,218 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-29 02:28:57,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-29 02:28:57,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2023-11-29 02:28:57,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:57,219 INFO L218 hiAutomatonCegarLoop]: Abstraction has 32 states and 49 transitions. [2023-11-29 02:28:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2023-11-29 02:28:57,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2023-11-29 02:28:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2023-11-29 02:28:57,223 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 40 transitions. [2023-11-29 02:28:57,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:28:57,224 INFO L428 stractBuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2023-11-29 02:28:57,224 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 02:28:57,224 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 40 transitions. [2023-11-29 02:28:57,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-29 02:28:57,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:57,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:57,226 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-11-29 02:28:57,226 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:57,226 INFO L748 eck$LassoCheckResult]: Stem: 268#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 269#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 272#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 273#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 260#L12-2 assume !(main_~i~0#1 <= 0); 261#L15-1 [2023-11-29 02:28:57,226 INFO L750 eck$LassoCheckResult]: Loop: 261#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 270#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 279#L12 assume !(main_~i~0#1 >= 10); 277#L12-2 assume !(main_~i~0#1 <= 0); 261#L15-1 [2023-11-29 02:28:57,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,227 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2023-11-29 02:28:57,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76247912] [2023-11-29 02:28:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:57,233 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:57,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:57,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2023-11-29 02:28:57,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762320491] [2023-11-29 02:28:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:57,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:57,248 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:57,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,249 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2023-11-29 02:28:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285920566] [2023-11-29 02:28:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:57,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:57,262 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:57,296 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:57,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:57,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:57,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:57,297 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:28:57,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:57,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:57,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2023-11-29 02:28:57,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:57,297 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:57,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,306 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,310 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,313 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,351 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:57,351 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:28:57,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:57,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:57,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 02:28:57,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:57,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:57,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 02:28:57,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:57,376 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:57,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-29 02:28:57,379 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:28:57,379 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:57,490 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:28:57,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-11-29 02:28:57,494 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:57,494 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:57,494 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:57,494 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:57,494 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:28:57,494 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,494 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:57,494 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:57,494 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2023-11-29 02:28:57,494 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:57,494 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:57,496 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,503 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,505 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,508 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,547 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:57,547 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:28:57,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:57,549 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:57,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 02:28:57,551 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:57,563 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:57,563 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:28:57,563 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:57,563 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:57,563 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:57,564 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:28:57,564 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:28:57,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:28:57,569 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 02:28:57,569 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:28:57,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:57,571 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:57,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-29 02:28:57,577 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:28:57,578 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:28:57,578 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:28:57,578 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-29 02:28:57,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-11-29 02:28:57,581 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:28:57,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:57,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:57,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,622 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:28:57,622 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,649 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 58 states and 90 transitions. Complement of second has 7 states. [2023-11-29 02:28:57,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-29 02:28:57,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2023-11-29 02:28:57,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:57,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-11-29 02:28:57,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:57,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2023-11-29 02:28:57,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:57,652 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 90 transitions. [2023-11-29 02:28:57,654 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-11-29 02:28:57,656 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 55 states and 85 transitions. [2023-11-29 02:28:57,656 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2023-11-29 02:28:57,656 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2023-11-29 02:28:57,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 85 transitions. [2023-11-29 02:28:57,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:57,657 INFO L218 hiAutomatonCegarLoop]: Abstraction has 55 states and 85 transitions. [2023-11-29 02:28:57,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 85 transitions. [2023-11-29 02:28:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2023-11-29 02:28:57,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 48 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2023-11-29 02:28:57,663 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 79 transitions. [2023-11-29 02:28:57,663 INFO L428 stractBuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2023-11-29 02:28:57,663 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 02:28:57,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 79 transitions. [2023-11-29 02:28:57,664 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2023-11-29 02:28:57,664 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:57,664 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:57,665 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:28:57,665 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:57,665 INFO L748 eck$LassoCheckResult]: Stem: 402#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 403#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; 408#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 419#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 413#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 414#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 417#L18-1 [2023-11-29 02:28:57,665 INFO L750 eck$LassoCheckResult]: Loop: 417#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 415#L12 assume !(main_~i~0#1 >= 10); 416#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 426#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 417#L18-1 [2023-11-29 02:28:57,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2023-11-29 02:28:57,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501229506] [2023-11-29 02:28:57,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501229506] [2023-11-29 02:28:57,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501229506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:28:57,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:28:57,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:28:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977638606] [2023-11-29 02:28:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:28:57,689 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:28:57,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2023-11-29 02:28:57,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135741632] [2023-11-29 02:28:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:57,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135741632] [2023-11-29 02:28:57,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135741632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:28:57,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:28:57,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:28:57,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287854965] [2023-11-29 02:28:57,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:28:57,710 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:28:57,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:28:57,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:28:57,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:28:57,711 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. cyclomatic complexity: 36 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:28:57,721 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2023-11-29 02:28:57,721 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2023-11-29 02:28:57,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-29 02:28:57,723 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 41 states and 60 transitions. [2023-11-29 02:28:57,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-29 02:28:57,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2023-11-29 02:28:57,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2023-11-29 02:28:57,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:57,724 INFO L218 hiAutomatonCegarLoop]: Abstraction has 41 states and 60 transitions. [2023-11-29 02:28:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2023-11-29 02:28:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2023-11-29 02:28:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2023-11-29 02:28:57,728 INFO L240 hiAutomatonCegarLoop]: Abstraction has 40 states and 59 transitions. [2023-11-29 02:28:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:28:57,729 INFO L428 stractBuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2023-11-29 02:28:57,729 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 02:28:57,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2023-11-29 02:28:57,730 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-29 02:28:57,730 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:57,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:57,731 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-29 02:28:57,731 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:57,731 INFO L748 eck$LassoCheckResult]: Stem: 505#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 506#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 510#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 517#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 515#L12-2 assume !(main_~i~0#1 <= 0); 507#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 508#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 527#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 497#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 498#L15-1 [2023-11-29 02:28:57,731 INFO L750 eck$LassoCheckResult]: Loop: 498#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 513#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 526#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 524#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 498#L15-1 [2023-11-29 02:28:57,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,732 INFO L85 PathProgramCache]: Analyzing trace with hash 588716517, now seen corresponding path program 1 times [2023-11-29 02:28:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589826023] [2023-11-29 02:28:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-29 02:28:57,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-11-29 02:28:57,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589826023] [2023-11-29 02:28:57,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589826023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:28:57,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:28:57,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:28:57,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823645764] [2023-11-29 02:28:57,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:28:57,786 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:28:57,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1709112, now seen corresponding path program 1 times [2023-11-29 02:28:57,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510786801] [2023-11-29 02:28:57,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:57,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510786801] [2023-11-29 02:28:57,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510786801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:28:57,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:28:57,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:28:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115944275] [2023-11-29 02:28:57,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:28:57,805 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-29 02:28:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:28:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:28:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:28:57,806 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 24 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:28:57,818 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2023-11-29 02:28:57,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2023-11-29 02:28:57,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-29 02:28:57,820 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 45 states and 60 transitions. [2023-11-29 02:28:57,820 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2023-11-29 02:28:57,821 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2023-11-29 02:28:57,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 60 transitions. [2023-11-29 02:28:57,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:57,821 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 60 transitions. [2023-11-29 02:28:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 60 transitions. [2023-11-29 02:28:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2023-11-29 02:28:57,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:57,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2023-11-29 02:28:57,825 INFO L240 hiAutomatonCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-11-29 02:28:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:28:57,826 INFO L428 stractBuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2023-11-29 02:28:57,827 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-29 02:28:57,827 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 54 transitions. [2023-11-29 02:28:57,828 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-29 02:28:57,828 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:57,828 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:57,828 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:28:57,829 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:57,829 INFO L748 eck$LassoCheckResult]: Stem: 602#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 603#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; 597#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 598#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 593#L12-2 assume !(main_~i~0#1 <= 0); 594#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 604#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 617#L12 assume !(main_~i~0#1 >= 10); 612#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 608#L15-1 [2023-11-29 02:28:57,829 INFO L750 eck$LassoCheckResult]: Loop: 608#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 609#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 614#L12 assume !(main_~i~0#1 >= 10); 613#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 608#L15-1 [2023-11-29 02:28:57,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash 588716579, now seen corresponding path program 1 times [2023-11-29 02:28:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184347736] [2023-11-29 02:28:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184347736] [2023-11-29 02:28:57,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184347736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:28:57,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796662092] [2023-11-29 02:28:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:28:57,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:57,864 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:28:57,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:28:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:57,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:28:57,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:28:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:57,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796662092] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:28:57,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:28:57,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-29 02:28:57,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697606798] [2023-11-29 02:28:57,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:28:57,927 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:28:57,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174, now seen corresponding path program 2 times [2023-11-29 02:28:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:57,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568230864] [2023-11-29 02:28:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:57,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:57,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:57,965 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:57,966 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:57,966 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:57,966 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:57,966 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:28:57,966 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:57,966 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:57,966 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:57,966 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2023-11-29 02:28:57,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:57,966 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:57,968 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,973 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,976 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:57,979 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,016 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:58,017 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:28:58,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,018 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-29 02:28:58,020 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:58,020 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:58,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-29 02:28:58,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,036 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-29 02:28:58,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:28:58,038 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:58,057 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:28:58,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:58,064 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:58,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:58,064 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:58,064 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:58,064 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:28:58,064 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:58,065 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:58,065 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2023-11-29 02:28:58,065 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:58,065 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:58,066 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,075 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,078 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,081 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,129 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:58,129 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:28:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,131 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-29 02:28:58,138 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:58,148 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:58,148 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:28:58,148 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:58,149 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:58,149 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:58,150 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:28:58,150 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:28:58,159 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:28:58,163 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:28:58,163 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:28:58,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,164 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-29 02:28:58,171 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:28:58,171 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:28:58,171 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:28:58,171 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-29 02:28:58,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-29 02:28:58,174 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:28:58,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:58,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:58,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:58,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:58,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:58,235 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:28:58,235 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,278 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 20. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 136 transitions. Complement of second has 7 states. [2023-11-29 02:28:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-11-29 02:28:58,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2023-11-29 02:28:58,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 13 letters. Loop has 4 letters. [2023-11-29 02:28:58,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 8 letters. [2023-11-29 02:28:58,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 136 transitions. [2023-11-29 02:28:58,283 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2023-11-29 02:28:58,284 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 91 states and 122 transitions. [2023-11-29 02:28:58,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2023-11-29 02:28:58,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2023-11-29 02:28:58,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 122 transitions. [2023-11-29 02:28:58,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:58,285 INFO L218 hiAutomatonCegarLoop]: Abstraction has 91 states and 122 transitions. [2023-11-29 02:28:58,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 122 transitions. [2023-11-29 02:28:58,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2023-11-29 02:28:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 77 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2023-11-29 02:28:58,292 INFO L240 hiAutomatonCegarLoop]: Abstraction has 78 states and 109 transitions. [2023-11-29 02:28:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:28:58,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:28:58,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:28:58,292 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:28:58,324 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2023-11-29 02:28:58,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 174 transitions. [2023-11-29 02:28:58,325 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2023-11-29 02:28:58,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 108 states and 137 transitions. [2023-11-29 02:28:58,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2023-11-29 02:28:58,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2023-11-29 02:28:58,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 137 transitions. [2023-11-29 02:28:58,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:58,328 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 137 transitions. [2023-11-29 02:28:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 137 transitions. [2023-11-29 02:28:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2023-11-29 02:28:58,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 85 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2023-11-29 02:28:58,334 INFO L240 hiAutomatonCegarLoop]: Abstraction has 86 states and 111 transitions. [2023-11-29 02:28:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:28:58,335 INFO L428 stractBuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2023-11-29 02:28:58,335 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-29 02:28:58,335 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 111 transitions. [2023-11-29 02:28:58,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-29 02:28:58,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:58,336 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:58,337 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 02:28:58,337 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:58,337 INFO L748 eck$LassoCheckResult]: Stem: 1071#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1072#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; 1075#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1085#L12 assume !(main_~i~0#1 >= 10); 1094#L12-2 assume !(main_~i~0#1 <= 0); 1092#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1091#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1088#L12 assume !(main_~i~0#1 >= 10); 1087#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1086#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1066#L18-1 [2023-11-29 02:28:58,337 INFO L750 eck$LassoCheckResult]: Loop: 1066#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1067#L12 assume !(main_~i~0#1 >= 10); 1116#L12-2 assume !(main_~i~0#1 <= 0); 1077#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1066#L18-1 [2023-11-29 02:28:58,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:58,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1449615143, now seen corresponding path program 1 times [2023-11-29 02:28:58,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:58,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957259223] [2023-11-29 02:28:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:58,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:58,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:58,347 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:58,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:58,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 2 times [2023-11-29 02:28:58,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:58,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753930182] [2023-11-29 02:28:58,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:58,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:58,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:58,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:58,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:58,355 INFO L85 PathProgramCache]: Analyzing trace with hash -130036926, now seen corresponding path program 2 times [2023-11-29 02:28:58,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:58,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718210060] [2023-11-29 02:28:58,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:58,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:58,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:58,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:58,395 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:58,395 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:58,395 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:58,395 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:58,395 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:28:58,395 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,395 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:58,395 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:58,395 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2023-11-29 02:28:58,395 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:58,396 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:58,396 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,403 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,407 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,410 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,442 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:58,442 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:28:58,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,443 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-29 02:28:58,445 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:58,445 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:58,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:58,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,460 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-29 02:28:58,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:28:58,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:58,477 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:28:58,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-29 02:28:58,480 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:58,481 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:58,481 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:58,481 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:58,481 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:28:58,481 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,481 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:58,481 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:58,481 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2023-11-29 02:28:58,481 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:58,481 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:58,482 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,487 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,489 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,491 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,518 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:58,518 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:28:58,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,519 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-29 02:28:58,522 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:58,532 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:58,532 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:28:58,532 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:58,532 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:58,532 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:58,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:28:58,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:28:58,536 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:28:58,538 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:28:58,539 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:28:58,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,540 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 02:28:58,549 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:28:58,549 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:28:58,549 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:28:58,549 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2023-11-29 02:28:58,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-29 02:28:58,553 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:28:58,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:58,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:58,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:58,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:58,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:58,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:58,613 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:28:58,613 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states and 111 transitions. cyclomatic complexity: 31 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,640 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states and 111 transitions. cyclomatic complexity: 31. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 115 states and 145 transitions. Complement of second has 7 states. [2023-11-29 02:28:58,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-29 02:28:58,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-29 02:28:58,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2023-11-29 02:28:58,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,642 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 8 letters. [2023-11-29 02:28:58,642 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,642 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 145 transitions. [2023-11-29 02:28:58,644 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-29 02:28:58,645 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 97 states and 125 transitions. [2023-11-29 02:28:58,645 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2023-11-29 02:28:58,645 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2023-11-29 02:28:58,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 125 transitions. [2023-11-29 02:28:58,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:58,646 INFO L218 hiAutomatonCegarLoop]: Abstraction has 97 states and 125 transitions. [2023-11-29 02:28:58,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 125 transitions. [2023-11-29 02:28:58,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2023-11-29 02:28:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.302325581395349) internal successors, (112), 85 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2023-11-29 02:28:58,651 INFO L240 hiAutomatonCegarLoop]: Abstraction has 86 states and 112 transitions. [2023-11-29 02:28:58,651 INFO L428 stractBuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2023-11-29 02:28:58,651 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-29 02:28:58,651 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 112 transitions. [2023-11-29 02:28:58,652 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-29 02:28:58,652 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:58,652 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:58,653 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:28:58,653 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:58,653 INFO L748 eck$LassoCheckResult]: Stem: 1337#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1338#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1342#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1399#L12 assume !(main_~i~0#1 >= 10); 1400#L12-2 assume !(main_~i~0#1 <= 0); 1373#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1370#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1365#L12 assume !(main_~i~0#1 >= 10); 1349#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1346#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1332#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1334#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1328#L12-2 [2023-11-29 02:28:58,653 INFO L750 eck$LassoCheckResult]: Loop: 1328#L12-2 assume !(main_~i~0#1 <= 0); 1329#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1347#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1395#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1328#L12-2 [2023-11-29 02:28:58,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:58,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 1 times [2023-11-29 02:28:58,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:58,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503656242] [2023-11-29 02:28:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:58,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:28:58,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:58,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503656242] [2023-11-29 02:28:58,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503656242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:28:58,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:28:58,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:28:58,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527944884] [2023-11-29 02:28:58,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:28:58,682 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:28:58,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:58,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2023-11-29 02:28:58,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:58,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278626168] [2023-11-29 02:28:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:58,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:58,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:58,721 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:58,721 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:58,721 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:58,722 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:58,722 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:28:58,722 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,722 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:58,722 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:58,722 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2023-11-29 02:28:58,722 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:58,722 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:58,723 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,728 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,734 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,776 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:58,777 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:28:58,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,778 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-29 02:28:58,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:58,785 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:58,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-29 02:28:58,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,800 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-29 02:28:58,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:28:58,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:58,816 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:28:58,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-29 02:28:58,819 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:58,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:58,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:58,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:58,819 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:28:58,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:58,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:58,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2023-11-29 02:28:58,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:58,819 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:58,820 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,824 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,826 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,830 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:58,864 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:58,864 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:28:58,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,866 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-29 02:28:58,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:58,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:58,882 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:28:58,882 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:58,882 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:58,882 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:58,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:28:58,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:28:58,885 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:28:58,887 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 02:28:58,887 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 02:28:58,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:58,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:58,889 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:58,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-29 02:28:58,893 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:28:58,893 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:28:58,893 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:28:58,893 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-29 02:28:58,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-11-29 02:28:58,896 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:28:58,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:58,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:58,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:58,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:58,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:58,947 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:28:58,947 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states and 112 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,973 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states and 112 transitions. cyclomatic complexity: 32. 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 188 states and 256 transitions. Complement of second has 7 states. [2023-11-29 02:28:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-29 02:28:58,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2023-11-29 02:28:58,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2023-11-29 02:28:58,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2023-11-29 02:28:58,975 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:58,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 256 transitions. [2023-11-29 02:28:58,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-29 02:28:58,979 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 140 states and 182 transitions. [2023-11-29 02:28:58,979 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2023-11-29 02:28:58,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2023-11-29 02:28:58,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 182 transitions. [2023-11-29 02:28:58,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:58,980 INFO L218 hiAutomatonCegarLoop]: Abstraction has 140 states and 182 transitions. [2023-11-29 02:28:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 182 transitions. [2023-11-29 02:28:58,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 94. [2023-11-29 02:28:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 93 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2023-11-29 02:28:58,986 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 124 transitions. [2023-11-29 02:28:58,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:28:58,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:28:58,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:28:58,987 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:28:59,005 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2023-11-29 02:28:59,005 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 105 states and 132 transitions. [2023-11-29 02:28:59,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2023-11-29 02:28:59,006 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 105 states to 103 states and 130 transitions. [2023-11-29 02:28:59,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2023-11-29 02:28:59,007 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2023-11-29 02:28:59,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 130 transitions. [2023-11-29 02:28:59,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:59,007 INFO L218 hiAutomatonCegarLoop]: Abstraction has 103 states and 130 transitions. [2023-11-29 02:28:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 130 transitions. [2023-11-29 02:28:59,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2023-11-29 02:28:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 93 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 121 transitions. [2023-11-29 02:28:59,012 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 121 transitions. [2023-11-29 02:28:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:28:59,012 INFO L428 stractBuchiCegarLoop]: Abstraction has 94 states and 121 transitions. [2023-11-29 02:28:59,021 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-29 02:28:59,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 94 states and 121 transitions. [2023-11-29 02:28:59,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2023-11-29 02:28:59,022 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2023-11-29 02:28:59,022 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:59,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:59,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-29 02:28:59,025 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2023-11-29 02:28:59,026 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-29 02:28:59,026 INFO L748 eck$LassoCheckResult]: Stem: 1881#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1882#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1895#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1896#L12-2 assume !(main_~i~0#1 <= 0); 1917#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1916#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1915#L12 assume !(main_~i~0#1 >= 10); 1914#L12-2 assume !(main_~i~0#1 <= 0); 1913#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1912#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1911#L12 assume !(main_~i~0#1 >= 10); 1910#L12-2 assume !(main_~i~0#1 <= 0); 1909#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1907#L12 assume !(main_~i~0#1 >= 10); 1903#L12-2 assume !(main_~i~0#1 <= 0); 1906#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1905#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1902#L12 assume !(main_~i~0#1 >= 10); 1901#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1900#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1891#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1880#L12 assume !(main_~i~0#1 >= 10); 1958#L12-2 assume !(main_~i~0#1 <= 0); 1885#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1878#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1879#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1872#L12-2 [2023-11-29 02:28:59,026 INFO L750 eck$LassoCheckResult]: Loop: 1872#L12-2 assume !(main_~i~0#1 <= 0); 1873#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1892#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1952#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1872#L12-2 [2023-11-29 02:28:59,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-11-29 02:28:59,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:59,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 2 times [2023-11-29 02:28:59,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:59,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724211839] [2023-11-29 02:28:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:59,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:28:59,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:28:59,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724211839] [2023-11-29 02:28:59,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724211839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:28:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173068904] [2023-11-29 02:28:59,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:28:59,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:28:59,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,110 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 02:28:59,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:28:59,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:28:59,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:28:59,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:28:59,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:28:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:28:59,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173068904] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:28:59,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:28:59,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-29 02:28:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843162093] [2023-11-29 02:28:59,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:28:59,255 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-29 02:28:59,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:59,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2023-11-29 02:28:59,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:59,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329891034] [2023-11-29 02:28:59,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:59,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:59,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:59,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:59,296 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:59,297 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:59,297 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:59,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:59,297 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 02:28:59,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:59,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:59,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2023-11-29 02:28:59,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:59,297 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:59,298 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:59,303 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:59,306 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:59,309 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:59,350 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:59,350 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 02:28:59,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,351 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-29 02:28:59,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:59,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:59,365 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:28:59,366 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:28:59,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:59,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,370 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-29 02:28:59,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:59,377 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:59,396 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:28:59,396 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:28:59,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2023-11-29 02:28:59,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,400 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-29 02:28:59,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:59,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:59,421 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 02:28:59,421 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 02:28:59,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2023-11-29 02:28:59,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,425 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-11-29 02:28:59,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 02:28:59,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:59,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:59,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,444 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-11-29 02:28:59,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 02:28:59,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 02:28:59,459 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 02:28:59,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2023-11-29 02:28:59,462 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 02:28:59,462 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 02:28:59,462 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 02:28:59,462 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 02:28:59,462 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 02:28:59,462 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,462 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 02:28:59,462 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 02:28:59,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2023-11-29 02:28:59,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 02:28:59,462 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 02:28:59,463 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:59,467 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:59,469 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:59,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 02:28:59,502 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 02:28:59,502 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 02:28:59,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,503 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-11-29 02:28:59,505 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:59,515 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:59,515 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:28:59,515 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:59,515 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:59,515 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:59,516 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:28:59,516 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:28:59,517 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:28:59,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:59,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,521 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-11-29 02:28:59,524 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:59,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:59,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:59,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:59,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:59,536 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:28:59,536 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:28:59,540 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:28:59,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-11-29 02:28:59,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,545 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-11-29 02:28:59,549 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:59,559 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:59,559 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:59,559 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:59,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:59,561 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-29 02:28:59,561 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-29 02:28:59,565 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 02:28:59,568 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2023-11-29 02:28:59,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,570 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-11-29 02:28:59,573 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-29 02:28:59,583 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 02:28:59,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 02:28:59,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 02:28:59,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 02:28:59,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 02:28:59,584 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 02:28:59,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 02:28:59,586 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 02:28:59,589 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 02:28:59,589 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-29 02:28:59,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 02:28:59,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:28:59,590 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 02:28:59,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-11-29 02:28:59,592 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 02:28:59,592 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 02:28:59,592 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 02:28:59,592 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-29 02:28:59,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-11-29 02:28:59,595 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 02:28:59,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:59,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:59,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:59,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:59,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:59,658 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:28:59,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,677 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35. 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 148 states and 200 transitions. Complement of second has 7 states. [2023-11-29 02:28:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-11-29 02:28:59,679 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-29 02:28:59,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:59,679 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:28:59,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:59,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:59,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:59,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:59,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:59,744 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:28:59,745 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,775 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35. 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 173 states and 212 transitions. Complement of second has 7 states. [2023-11-29 02:28:59,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:59,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2023-11-29 02:28:59,776 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-29 02:28:59,776 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:59,777 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 02:28:59,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:59,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:28:59,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:28:59,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:28:59,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:28:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:28:59,841 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-29 02:28:59,841 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,863 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 94 states and 121 transitions. cyclomatic complexity: 35. 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 163 states and 221 transitions. Complement of second has 8 states. [2023-11-29 02:28:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 02:28:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2023-11-29 02:28:59,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2023-11-29 02:28:59,865 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:59,865 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2023-11-29 02:28:59,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:59,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2023-11-29 02:28:59,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 02:28:59,866 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 163 states and 221 transitions. [2023-11-29 02:28:59,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2023-11-29 02:28:59,869 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 163 states to 115 states and 147 transitions. [2023-11-29 02:28:59,869 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2023-11-29 02:28:59,869 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2023-11-29 02:28:59,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 147 transitions. [2023-11-29 02:28:59,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:59,869 INFO L218 hiAutomatonCegarLoop]: Abstraction has 115 states and 147 transitions. [2023-11-29 02:28:59,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 147 transitions. [2023-11-29 02:28:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 61. [2023-11-29 02:28:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 61 states have (on average 1.278688524590164) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2023-11-29 02:28:59,872 INFO L240 hiAutomatonCegarLoop]: Abstraction has 61 states and 78 transitions. [2023-11-29 02:28:59,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:28:59,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:28:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:28:59,873 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:28:59,973 INFO L93 Difference]: Finished difference Result 195 states and 238 transitions. [2023-11-29 02:28:59,973 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 238 transitions. [2023-11-29 02:28:59,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 82 [2023-11-29 02:28:59,976 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 182 states and 225 transitions. [2023-11-29 02:28:59,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 60 [2023-11-29 02:28:59,977 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 96 [2023-11-29 02:28:59,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 225 transitions. [2023-11-29 02:28:59,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:28:59,977 INFO L218 hiAutomatonCegarLoop]: Abstraction has 182 states and 225 transitions. [2023-11-29 02:28:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states and 225 transitions. [2023-11-29 02:28:59,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2023-11-29 02:28:59,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.255952380952381) internal successors, (211), 167 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:28:59,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 211 transitions. [2023-11-29 02:28:59,982 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 211 transitions. [2023-11-29 02:28:59,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:28:59,983 INFO L428 stractBuchiCegarLoop]: Abstraction has 168 states and 211 transitions. [2023-11-29 02:28:59,983 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-29 02:28:59,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 211 transitions. [2023-11-29 02:28:59,984 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-29 02:28:59,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:28:59,985 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:28:59,986 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-29 02:28:59,986 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-29 02:28:59,987 INFO L748 eck$LassoCheckResult]: Stem: 3212#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 3213#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3217#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3223#L12 assume !(main_~i~0#1 >= 10); 3227#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3225#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3208#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3209#L12 assume !(main_~i~0#1 >= 10); 3316#L12-2 assume !(main_~i~0#1 <= 0); 3317#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3312#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3272#L12 [2023-11-29 02:28:59,987 INFO L750 eck$LassoCheckResult]: Loop: 3272#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 3271#L12-2 assume !(main_~i~0#1 <= 0); 3207#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3311#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3220#L12 assume !(main_~i~0#1 >= 10); 3221#L12-2 assume !(main_~i~0#1 <= 0); 3216#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3210#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3211#L12 assume !(main_~i~0#1 >= 10); 3310#L12-2 assume !(main_~i~0#1 <= 0); 3309#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3308#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3307#L12 assume !(main_~i~0#1 >= 10); 3306#L12-2 assume !(main_~i~0#1 <= 0); 3305#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3304#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3303#L12 assume !(main_~i~0#1 >= 10); 3302#L12-2 assume !(main_~i~0#1 <= 0); 3301#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3300#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3299#L12 assume !(main_~i~0#1 >= 10); 3298#L12-2 assume !(main_~i~0#1 <= 0); 3297#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3296#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3295#L12 assume !(main_~i~0#1 >= 10); 3294#L12-2 assume !(main_~i~0#1 <= 0); 3293#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3292#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3291#L12 assume !(main_~i~0#1 >= 10); 3290#L12-2 assume !(main_~i~0#1 <= 0); 3289#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3288#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3287#L12 assume !(main_~i~0#1 >= 10); 3286#L12-2 assume !(main_~i~0#1 <= 0); 3285#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3284#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3283#L12 assume !(main_~i~0#1 >= 10); 3278#L12-2 assume !(main_~i~0#1 <= 0); 3282#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3281#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3277#L12 assume !(main_~i~0#1 >= 10); 3276#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3274#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3275#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3279#L12 assume !(main_~i~0#1 >= 10); 3280#L12-2 assume !(main_~i~0#1 <= 0); 3371#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3370#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3343#L12 assume !(main_~i~0#1 >= 10); 3204#L12-2 assume !(main_~i~0#1 <= 0); 3205#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3224#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3344#L12 assume !(main_~i~0#1 >= 10); 3369#L12-2 assume !(main_~i~0#1 <= 0); 3368#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3367#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3366#L12 assume !(main_~i~0#1 >= 10); 3365#L12-2 assume !(main_~i~0#1 <= 0); 3364#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3363#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3362#L12 assume !(main_~i~0#1 >= 10); 3361#L12-2 assume !(main_~i~0#1 <= 0); 3360#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3359#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3358#L12 assume !(main_~i~0#1 >= 10); 3357#L12-2 assume !(main_~i~0#1 <= 0); 3356#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3355#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3354#L12 assume !(main_~i~0#1 >= 10); 3353#L12-2 assume !(main_~i~0#1 <= 0); 3352#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3351#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3350#L12 assume !(main_~i~0#1 >= 10); 3349#L12-2 assume !(main_~i~0#1 <= 0); 3348#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3347#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3346#L12 assume !(main_~i~0#1 >= 10); 3219#L12-2 assume !(main_~i~0#1 <= 0); 3345#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3273#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3272#L12 [2023-11-29 02:28:59,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:59,987 INFO L85 PathProgramCache]: Analyzing trace with hash 474307092, now seen corresponding path program 1 times [2023-11-29 02:28:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:59,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915868655] [2023-11-29 02:28:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:28:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:59,991 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:28:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:28:59,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:28:59,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:28:59,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1617023097, now seen corresponding path program 1 times [2023-11-29 02:28:59,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:28:59,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666605974] [2023-11-29 02:28:59,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:28:59,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:29:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:00,012 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:29:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:00,027 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:29:00,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:29:00,028 INFO L85 PathProgramCache]: Analyzing trace with hash -68907892, now seen corresponding path program 3 times [2023-11-29 02:29:00,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:29:00,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184830891] [2023-11-29 02:29:00,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:29:00,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:29:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:29:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-29 02:29:00,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:29:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184830891] [2023-11-29 02:29:00,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184830891] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:29:00,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230032280] [2023-11-29 02:29:00,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 02:29:00,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:29:00,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:29:00,133 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:29:00,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-29 02:29:00,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 02:29:00,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:29:00,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:29:00,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:29:00,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2023-11-29 02:29:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-29 02:29:00,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:29:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-29 02:29:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230032280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:29:00,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:29:00,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-29 02:29:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118921531] [2023-11-29 02:29:00,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:29:00,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:29:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:29:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:29:00,683 INFO L87 Difference]: Start difference. First operand 168 states and 211 transitions. cyclomatic complexity: 46 Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:29:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:29:00,734 INFO L93 Difference]: Finished difference Result 179 states and 197 transitions. [2023-11-29 02:29:00,734 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 179 states and 197 transitions. [2023-11-29 02:29:00,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-29 02:29:00,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 179 states to 175 states and 193 transitions. [2023-11-29 02:29:00,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2023-11-29 02:29:00,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 85 [2023-11-29 02:29:00,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 193 transitions. [2023-11-29 02:29:00,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:29:00,738 INFO L218 hiAutomatonCegarLoop]: Abstraction has 175 states and 193 transitions. [2023-11-29 02:29:00,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 193 transitions. [2023-11-29 02:29:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2023-11-29 02:29:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.1011904761904763) internal successors, (185), 167 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:29:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2023-11-29 02:29:00,742 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 185 transitions. [2023-11-29 02:29:00,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 02:29:00,743 INFO L428 stractBuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2023-11-29 02:29:00,743 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-29 02:29:00,743 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 185 transitions. [2023-11-29 02:29:00,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-29 02:29:00,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:29:00,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:29:00,746 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2023-11-29 02:29:00,746 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-29 02:29:00,746 INFO L748 eck$LassoCheckResult]: Stem: 4112#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 4113#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; 4117#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4129#L12 assume !(main_~i~0#1 >= 10); 4125#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4122#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4123#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4258#L12 assume !(main_~i~0#1 >= 10); 4257#L12-2 assume !(main_~i~0#1 <= 0); 4120#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4121#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4256#L12 assume !(main_~i~0#1 >= 10); 4254#L12-2 assume !(main_~i~0#1 <= 0); 4255#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4249#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4118#L12 assume !(main_~i~0#1 >= 10); 4104#L12-2 assume !(main_~i~0#1 <= 0); 4105#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4253#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4252#L12 assume !(main_~i~0#1 >= 10); 4251#L12-2 assume !(main_~i~0#1 <= 0); 4250#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4108#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4109#L12 assume !(main_~i~0#1 >= 10); 4271#L12-2 assume !(main_~i~0#1 <= 0); 4270#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4259#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4172#L12 [2023-11-29 02:29:00,747 INFO L750 eck$LassoCheckResult]: Loop: 4172#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 4171#L12-2 assume !(main_~i~0#1 <= 0); 4116#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4110#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4111#L12 assume !(main_~i~0#1 >= 10); 4106#L12-2 assume !(main_~i~0#1 <= 0); 4107#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4248#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4247#L12 assume !(main_~i~0#1 >= 10); 4246#L12-2 assume !(main_~i~0#1 <= 0); 4245#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4244#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4243#L12 assume !(main_~i~0#1 >= 10); 4242#L12-2 assume !(main_~i~0#1 <= 0); 4241#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4240#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4239#L12 assume !(main_~i~0#1 >= 10); 4238#L12-2 assume !(main_~i~0#1 <= 0); 4237#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4236#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4235#L12 assume !(main_~i~0#1 >= 10); 4234#L12-2 assume !(main_~i~0#1 <= 0); 4233#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4232#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4231#L12 assume !(main_~i~0#1 >= 10); 4230#L12-2 assume !(main_~i~0#1 <= 0); 4229#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4228#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4227#L12 assume !(main_~i~0#1 >= 10); 4226#L12-2 assume !(main_~i~0#1 <= 0); 4225#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4224#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4223#L12 assume !(main_~i~0#1 >= 10); 4222#L12-2 assume !(main_~i~0#1 <= 0); 4221#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4220#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4219#L12 assume !(main_~i~0#1 >= 10); 4216#L12-2 assume !(main_~i~0#1 <= 0); 4218#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4217#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4215#L12 assume !(main_~i~0#1 >= 10); 4214#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4211#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4213#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4212#L12 assume !(main_~i~0#1 >= 10); 4210#L12-2 assume !(main_~i~0#1 <= 0); 4209#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4208#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4207#L12 assume !(main_~i~0#1 >= 10); 4206#L12-2 assume !(main_~i~0#1 <= 0); 4205#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4203#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4201#L12 assume !(main_~i~0#1 >= 10); 4199#L12-2 assume !(main_~i~0#1 <= 0); 4197#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4195#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4193#L12 assume !(main_~i~0#1 >= 10); 4191#L12-2 assume !(main_~i~0#1 <= 0); 4189#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4187#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4185#L12 assume !(main_~i~0#1 >= 10); 4183#L12-2 assume !(main_~i~0#1 <= 0); 4182#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4173#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4174#L12 assume !(main_~i~0#1 >= 10); 4184#L12-2 assume !(main_~i~0#1 <= 0); 4204#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4202#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4200#L12 assume !(main_~i~0#1 >= 10); 4198#L12-2 assume !(main_~i~0#1 <= 0); 4196#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4194#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4192#L12 assume !(main_~i~0#1 >= 10); 4190#L12-2 assume !(main_~i~0#1 <= 0); 4188#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4186#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4178#L12 assume !(main_~i~0#1 >= 10); 4179#L12-2 assume !(main_~i~0#1 <= 0); 4260#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4181#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4172#L12 [2023-11-29 02:29:00,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:29:00,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1514411024, now seen corresponding path program 2 times [2023-11-29 02:29:00,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:29:00,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575681130] [2023-11-29 02:29:00,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:29:00,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:29:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:00,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:29:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:00,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:29:00,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:29:00,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1617023097, now seen corresponding path program 2 times [2023-11-29 02:29:00,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:29:00,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495119523] [2023-11-29 02:29:00,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:29:00,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:29:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:00,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:29:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:00,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:29:00,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:29:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash -883489176, now seen corresponding path program 4 times [2023-11-29 02:29:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:29:00,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608642345] [2023-11-29 02:29:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:29:00,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:29:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:29:00,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-29 02:29:00,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:29:00,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608642345] [2023-11-29 02:29:00,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608642345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 02:29:00,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236500884] [2023-11-29 02:29:00,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 02:29:00,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:29:00,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:29:00,980 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:29:00,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-29 02:29:01,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 02:29:01,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:29:01,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 02:29:01,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:29:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-29 02:29:01,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:29:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2023-11-29 02:29:01,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236500884] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:29:01,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 02:29:01,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2023-11-29 02:29:01,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449444275] [2023-11-29 02:29:01,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 02:29:01,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:29:01,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 02:29:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:29:01,721 INFO L87 Difference]: Start difference. First operand 168 states and 185 transitions. cyclomatic complexity: 21 Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:29:01,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:29:01,805 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2023-11-29 02:29:01,805 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 229 transitions. [2023-11-29 02:29:01,807 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-29 02:29:01,809 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 208 states and 223 transitions. [2023-11-29 02:29:01,809 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2023-11-29 02:29:01,810 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2023-11-29 02:29:01,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 223 transitions. [2023-11-29 02:29:01,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 02:29:01,810 INFO L218 hiAutomatonCegarLoop]: Abstraction has 208 states and 223 transitions. [2023-11-29 02:29:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 223 transitions. [2023-11-29 02:29:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 167. [2023-11-29 02:29:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.089820359281437) internal successors, (182), 166 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:29:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2023-11-29 02:29:01,815 INFO L240 hiAutomatonCegarLoop]: Abstraction has 167 states and 182 transitions. [2023-11-29 02:29:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 02:29:01,815 INFO L428 stractBuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2023-11-29 02:29:01,816 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2023-11-29 02:29:01,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 182 transitions. [2023-11-29 02:29:01,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2023-11-29 02:29:01,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 02:29:01,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 02:29:01,818 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-29 02:29:01,818 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2023-11-29 02:29:01,818 INFO L748 eck$LassoCheckResult]: Stem: 5147#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 5148#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 5150#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5162#L12 assume !(main_~i~0#1 >= 10); 5159#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 5155#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5156#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5202#L12 assume !(main_~i~0#1 >= 10); 5199#L12-2 assume !(main_~i~0#1 <= 0); 5198#L15-1 [2023-11-29 02:29:01,819 INFO L750 eck$LassoCheckResult]: Loop: 5198#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5197#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5196#L12 assume !(main_~i~0#1 >= 10); 5195#L12-2 assume !(main_~i~0#1 <= 0); 5194#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5193#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5192#L12 assume !(main_~i~0#1 >= 10); 5191#L12-2 assume !(main_~i~0#1 <= 0); 5190#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5189#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5188#L12 assume !(main_~i~0#1 >= 10); 5187#L12-2 assume !(main_~i~0#1 <= 0); 5186#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5185#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5184#L12 assume !(main_~i~0#1 >= 10); 5183#L12-2 assume !(main_~i~0#1 <= 0); 5182#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5181#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5180#L12 assume !(main_~i~0#1 >= 10); 5179#L12-2 assume !(main_~i~0#1 <= 0); 5178#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5177#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5176#L12 assume !(main_~i~0#1 >= 10); 5175#L12-2 assume !(main_~i~0#1 <= 0); 5174#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5173#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5172#L12 assume !(main_~i~0#1 >= 10); 5171#L12-2 assume !(main_~i~0#1 <= 0); 5170#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5169#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5168#L12 assume !(main_~i~0#1 >= 10); 5167#L12-2 assume !(main_~i~0#1 <= 0); 5166#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5165#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5164#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 5161#L12-2 assume !(main_~i~0#1 <= 0); 5142#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5145#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5146#L12 assume !(main_~i~0#1 >= 10); 5241#L12-2 assume !(main_~i~0#1 <= 0); 5240#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5239#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5238#L12 assume !(main_~i~0#1 >= 10); 5237#L12-2 assume !(main_~i~0#1 <= 0); 5236#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5235#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5234#L12 assume !(main_~i~0#1 >= 10); 5233#L12-2 assume !(main_~i~0#1 <= 0); 5232#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5231#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5230#L12 assume !(main_~i~0#1 >= 10); 5229#L12-2 assume !(main_~i~0#1 <= 0); 5228#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5227#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5226#L12 assume !(main_~i~0#1 >= 10); 5225#L12-2 assume !(main_~i~0#1 <= 0); 5224#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5223#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5222#L12 assume !(main_~i~0#1 >= 10); 5221#L12-2 assume !(main_~i~0#1 <= 0); 5220#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5219#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5218#L12 assume !(main_~i~0#1 >= 10); 5217#L12-2 assume !(main_~i~0#1 <= 0); 5216#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5215#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5214#L12 assume !(main_~i~0#1 >= 10); 5213#L12-2 assume !(main_~i~0#1 <= 0); 5212#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5211#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5210#L12 assume !(main_~i~0#1 >= 10); 5209#L12-2 assume !(main_~i~0#1 <= 0); 5208#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 5207#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5206#L12 assume !(main_~i~0#1 >= 10); 5205#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 5203#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 5204#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 5200#L12 assume !(main_~i~0#1 >= 10); 5201#L12-2 assume !(main_~i~0#1 <= 0); 5198#L15-1 [2023-11-29 02:29:01,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:29:01,819 INFO L85 PathProgramCache]: Analyzing trace with hash 644068259, now seen corresponding path program 3 times [2023-11-29 02:29:01,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:29:01,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252184298] [2023-11-29 02:29:01,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:29:01,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:29:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:01,824 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:29:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:01,826 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:29:01,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:29:01,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1888138361, now seen corresponding path program 3 times [2023-11-29 02:29:01,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:29:01,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233584908] [2023-11-29 02:29:01,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:29:01,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:29:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:01,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:29:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:01,850 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:29:01,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:29:01,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1126640613, now seen corresponding path program 5 times [2023-11-29 02:29:01,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:29:01,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182924370] [2023-11-29 02:29:01,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:29:01,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:29:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:01,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:29:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:01,875 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:29:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:02,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:29:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:29:02,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 02:29:02 BoogieIcfgContainer [2023-11-29 02:29:02,379 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 02:29:02,379 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:29:02,379 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:29:02,379 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:29:02,380 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:28:55" (3/4) ... [2023-11-29 02:29:02,381 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-29 02:29:02,421 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:29:02,422 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:29:02,422 INFO L158 Benchmark]: Toolchain (without parser) took 7395.46ms. Allocated memory was 148.9MB in the beginning and 184.5MB in the end (delta: 35.7MB). Free memory was 110.9MB in the beginning and 89.4MB in the end (delta: 21.5MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2023-11-29 02:29:02,422 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:29:02,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.55ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 101.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:29:02,423 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.00ms. Allocated memory is still 148.9MB. Free memory was 101.5MB in the beginning and 100.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:29:02,423 INFO L158 Benchmark]: Boogie Preprocessor took 29.95ms. Allocated memory is still 148.9MB. Free memory was 100.3MB in the beginning and 98.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:29:02,424 INFO L158 Benchmark]: RCFGBuilder took 235.78ms. Allocated memory is still 148.9MB. Free memory was 98.8MB in the beginning and 90.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 02:29:02,424 INFO L158 Benchmark]: BuchiAutomizer took 6845.88ms. Allocated memory was 148.9MB in the beginning and 184.5MB in the end (delta: 35.7MB). Free memory was 90.0MB in the beginning and 92.5MB in the end (delta: -2.6MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. [2023-11-29 02:29:02,424 INFO L158 Benchmark]: Witness Printer took 42.47ms. Allocated memory is still 184.5MB. Free memory was 92.5MB in the beginning and 89.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:29:02,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 148.9MB. Free memory is still 118.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.55ms. Allocated memory is still 148.9MB. Free memory was 110.9MB in the beginning and 101.5MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.00ms. Allocated memory is still 148.9MB. Free memory was 101.5MB in the beginning and 100.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.95ms. Allocated memory is still 148.9MB. Free memory was 100.3MB in the beginning and 98.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 235.78ms. Allocated memory is still 148.9MB. Free memory was 98.8MB in the beginning and 90.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6845.88ms. Allocated memory was 148.9MB in the beginning and 184.5MB in the end (delta: 35.7MB). Free memory was 90.0MB in the beginning and 92.5MB in the end (delta: -2.6MB). Peak memory consumption was 35.0MB. Max. memory is 16.1GB. * Witness Printer took 42.47ms. Allocated memory is still 184.5MB. Free memory was 92.5MB in the beginning and 89.4MB 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 15 terminating modules (8 trivial, 6 deterministic, 1 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 (-1 * i) and consists of 4 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 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 12 locations. The remainder module has 167 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.7s and 12 iterations. TraceHistogramMax:20. Analysis of lassos took 5.2s. Construction of modules took 0.3s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 15. Automata minimization 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 245 StatesRemovedByMinimization, 15 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, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 167 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 529 IncrementalHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 134 mSDtfsCounter, 529 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc2 concLT1 SILN0 SILU0 SILI2 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital14 mio100 ax182 hnf100 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq176 hnf90 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 34ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 18]: 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=0, up=0] [L12] COND FALSE !(i >= 10) VAL [i=0, up=0] [L15] COND TRUE i <= 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up >= 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i >= 10) VAL [i=1, up=1] [L15] COND FALSE !(i <= 0) VAL [i=1, up=1] Loop: [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 [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) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 18]: 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=0, up=0] [L12] COND FALSE !(i >= 10) VAL [i=0, up=0] [L15] COND TRUE i <= 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up >= 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i >= 10) VAL [i=1, up=1] [L15] COND FALSE !(i <= 0) VAL [i=1, up=1] Loop: [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 [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) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-29 02:29:02,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2023-11-29 02:29:02,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-29 02:29:02,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-11-29 02:29:03,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 02:29:03,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6742f8c1-93ff-4d3e-b023-228a172ba886/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)