./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/NO_22.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2aebec197cf7bd355d2eb5f718c983de149eae8f5ff2da107813d58a220d4744 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:00:47,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:00:47,270 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 23:00:47,276 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:00:47,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:00:47,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:00:47,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:00:47,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:00:47,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:00:47,335 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:00:47,335 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:00:47,336 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 23:00:47,336 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 23:00:47,338 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 23:00:47,339 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 23:00:47,339 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 23:00:47,340 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 23:00:47,341 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:00:47,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 23:00:47,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:00:47,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:00:47,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 23:00:47,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 23:00:47,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 23:00:47,345 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:00:47,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:00:47,346 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 23:00:47,347 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:00:47,347 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:00:47,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:00:47,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:00:47,350 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:00:47,351 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 23:00:47,351 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_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aebec197cf7bd355d2eb5f718c983de149eae8f5ff2da107813d58a220d4744 [2023-11-06 23:00:47,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:00:47,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:00:47,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:00:47,814 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:00:47,815 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:00:47,817 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-restricted-15/NO_22.c [2023-11-06 23:00:51,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:00:51,389 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:00:51,390 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/sv-benchmarks/c/termination-restricted-15/NO_22.c [2023-11-06 23:00:51,399 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/data/853ccb5a9/0ac00a0efed1463fb1080dca1981c1d3/FLAG74adc272e [2023-11-06 23:00:51,421 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/data/853ccb5a9/0ac00a0efed1463fb1080dca1981c1d3 [2023-11-06 23:00:51,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:00:51,432 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:00:51,437 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:51,438 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:00:51,445 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:00:51,446 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f629205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51, skipping insertion in model container [2023-11-06 23:00:51,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:00:51,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:51,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:00:51,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:51,689 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:00:51,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51 WrapperNode [2023-11-06 23:00:51,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:51,691 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:51,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:00:51,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:00:51,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,726 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2023-11-06 23:00:51,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:51,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:00:51,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:00:51,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:00:51,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,745 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:00:51,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:00:51,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:00:51,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:00:51,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (1/1) ... [2023-11-06 23:00:51,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:51,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:51,798 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:51,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 23:00:51,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:00:51,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:00:51,953 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:00:51,955 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:00:52,037 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:00:52,045 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:00:52,045 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:00:52,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52 BoogieIcfgContainer [2023-11-06 23:00:52,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:00:52,049 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 23:00:52,050 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 23:00:52,054 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 23:00:52,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:00:52,055 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 11:00:51" (1/3) ... [2023-11-06 23:00:52,056 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b1a3616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:00:52, skipping insertion in model container [2023-11-06 23:00:52,057 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:00:52,057 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:51" (2/3) ... [2023-11-06 23:00:52,057 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3b1a3616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 11:00:52, skipping insertion in model container [2023-11-06 23:00:52,057 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 23:00:52,058 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52" (3/3) ... [2023-11-06 23:00:52,059 INFO L332 chiAutomizerObserver]: Analyzing ICFG NO_22.c [2023-11-06 23:00:52,123 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 23:00:52,124 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 23:00:52,124 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 23:00:52,124 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 23:00:52,124 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 23:00:52,125 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 23:00:52,125 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 23:00:52,125 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 23:00:52,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2023-11-06 23:00:52,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:52,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:52,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:52,155 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:00:52,155 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:00:52,156 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 23:00:52,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2023-11-06 23:00:52,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:52,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:52,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:52,158 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 23:00:52,159 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:00:52,167 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 3#L10-2true [2023-11-06 23:00:52,168 INFO L750 eck$LassoCheckResult]: Loop: 3#L10-2true assume !!(main_~i~0#1 < 100); 5#L10true assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 3#L10-2true [2023-11-06 23:00:52,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:52,176 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 23:00:52,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:52,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445950662] [2023-11-06 23:00:52,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:52,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:52,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:52,295 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:52,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:52,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-11-06 23:00:52,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:52,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000800999] [2023-11-06 23:00:52,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:52,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:52,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:52,312 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:52,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:52,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-11-06 23:00:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:52,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906088411] [2023-11-06 23:00:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:52,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:52,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:52,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906088411] [2023-11-06 23:00:52,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906088411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:52,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:52,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:00:52,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748117266] [2023-11-06 23:00:52,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:52,498 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:52,499 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:52,499 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:52,499 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:52,500 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:00:52,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:52,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:52,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:52,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2023-11-06 23:00:52,501 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:52,501 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:52,541 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:52,557 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:52,563 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:52,653 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:52,653 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:00:52,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:52,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:52,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 23:00:52,662 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:52,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:52,689 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:52,689 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: [] [2023-11-06 23:00:52,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:52,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:52,706 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:52,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:52,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:52,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 23:00:52,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:52,735 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: [] [2023-11-06 23:00:52,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:52,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:52,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:52,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 23:00:52,762 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:52,762 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:52,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:52,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:52,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:52,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:52,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 23:00:52,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:00:52,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:52,820 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:00:52,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:52,834 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:52,834 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:52,834 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:52,834 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:52,835 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:00:52,835 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:52,835 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:52,835 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:52,835 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2023-11-06 23:00:52,835 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:52,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:52,838 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:52,843 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:52,850 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:52,927 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:52,933 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:00:52,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:52,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:52,937 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:52,948 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:52,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 23:00:52,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:52,964 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:52,964 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:52,964 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:52,974 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 23:00:52,976 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 23:00:53,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:00:53,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:53,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:53,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:53,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:53,029 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:53,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 23:00:53,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:53,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:53,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:53,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:53,058 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 23:00:53,058 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 23:00:53,093 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:00:53,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:53,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:53,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:53,105 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:53,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 23:00:53,109 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:53,121 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:53,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:53,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:53,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:53,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:53,124 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:53,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:53,145 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:00:53,151 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:00:53,151 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 23:00:53,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:53,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:53,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:53,187 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:00:53,188 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:00:53,188 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:00:53,189 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 [] [2023-11-06 23:00:53,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 23:00:53,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:53,197 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:00:53,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:53,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:53,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:53,263 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:53,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:53,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:53,335 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-06 23:00:53,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:53,396 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 28 transitions. Complement of second has 6 states. [2023-11-06 23:00:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-06 23:00:53,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-06 23:00:53,410 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:53,410 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-06 23:00:53,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:53,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-06 23:00:53,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:53,422 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2023-11-06 23:00:53,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:53,429 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2023-11-06 23:00:53,430 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-06 23:00:53,430 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-06 23:00:53,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-11-06 23:00:53,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:53,431 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-06 23:00:53,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-11-06 23:00:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-06 23:00:53,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-11-06 23:00:53,461 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-06 23:00:53,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:53,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:00:53,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:00:53,465 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. 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) [2023-11-06 23:00:53,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:53,481 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2023-11-06 23:00:53,481 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2023-11-06 23:00:53,482 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:53,483 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 7 transitions. [2023-11-06 23:00:53,483 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-06 23:00:53,483 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-06 23:00:53,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2023-11-06 23:00:53,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:53,484 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-06 23:00:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2023-11-06 23:00:53,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-06 23:00:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2023-11-06 23:00:53,487 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-06 23:00:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:00:53,489 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-06 23:00:53,490 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 23:00:53,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2023-11-06 23:00:53,491 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:53,491 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:53,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:53,492 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-06 23:00:53,492 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:00:53,493 INFO L748 eck$LassoCheckResult]: Stem: 82#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 83#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 84#L10-2 assume !!(main_~i~0#1 < 100); 81#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 79#L10-2 [2023-11-06 23:00:53,493 INFO L750 eck$LassoCheckResult]: Loop: 79#L10-2 assume !!(main_~i~0#1 < 100); 80#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 79#L10-2 [2023-11-06 23:00:53,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:53,494 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-06 23:00:53,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:53,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436349358] [2023-11-06 23:00:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:53,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:53,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:53,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:53,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2023-11-06 23:00:53,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:53,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301784532] [2023-11-06 23:00:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:53,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:53,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:53,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:53,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2023-11-06 23:00:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:53,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407213494] [2023-11-06 23:00:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:53,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:53,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:53,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407213494] [2023-11-06 23:00:53,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407213494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072839700] [2023-11-06 23:00:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:53,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:53,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:53,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:53,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:00:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:53,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:00:53,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:53,702 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:53,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:53,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072839700] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:00:53,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:00:53,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-06 23:00:53,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425361624] [2023-11-06 23:00:53,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:00:53,786 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:53,786 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:53,786 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:53,786 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:53,786 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:00:53,786 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:53,786 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:53,787 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:53,787 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2023-11-06 23:00:53,787 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:53,787 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:53,791 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:53,795 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:53,809 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:53,863 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:53,864 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:00:53,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:53,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:53,870 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:53,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:53,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:53,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 23:00:53,903 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:53,903 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: [] [2023-11-06 23:00:53,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:53,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:53,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:53,911 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:53,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 23:00:53,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:53,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:53,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:53,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:53,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:53,961 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:53,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:00:53,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:53,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 23:00:53,999 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:00:54,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:54,010 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:54,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:54,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:54,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:54,010 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:00:54,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:54,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:54,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:54,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2023-11-06 23:00:54,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:54,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:54,013 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:54,020 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:54,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:54,080 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:54,080 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:00:54,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:54,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:54,082 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:54,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 23:00:54,088 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:54,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:54,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:54,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:54,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:54,110 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 23:00:54,110 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 23:00:54,123 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:00:54,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:54,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:54,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:54,134 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:54,145 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:54,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 23:00:54,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:54,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:54,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:54,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:54,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:54,163 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:54,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:54,174 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:00:54,177 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:00:54,178 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 23:00:54,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:54,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:54,183 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:54,190 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:00:54,190 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:00:54,190 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:00:54,190 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 [] [2023-11-06 23:00:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 23:00:54,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:54,201 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:00:54,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:54,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:54,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:54,249 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:54,250 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:54,256 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-06 23:00:54,256 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:54,274 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 7 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 13 transitions. Complement of second has 5 states. [2023-11-06 23:00:54,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:54,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:54,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-06 23:00:54,278 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-06 23:00:54,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:54,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2023-11-06 23:00:54,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:54,281 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2023-11-06 23:00:54,281 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:54,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2023-11-06 23:00:54,282 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:54,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 13 transitions. [2023-11-06 23:00:54,283 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-06 23:00:54,283 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-06 23:00:54,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2023-11-06 23:00:54,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:54,284 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-06 23:00:54,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2023-11-06 23:00:54,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-06 23:00:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 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) [2023-11-06 23:00:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2023-11-06 23:00:54,287 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-06 23:00:54,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:54,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:00:54,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:00:54,288 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:54,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:54,321 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-11-06 23:00:54,322 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2023-11-06 23:00:54,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:54,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 13 transitions. [2023-11-06 23:00:54,324 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-06 23:00:54,325 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-06 23:00:54,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2023-11-06 23:00:54,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:00:54,325 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-06 23:00:54,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2023-11-06 23:00:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-06 23:00:54,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 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) [2023-11-06 23:00:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-06 23:00:54,329 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-06 23:00:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:00:54,332 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-06 23:00:54,332 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 23:00:54,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2023-11-06 23:00:54,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-06 23:00:54,336 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:54,337 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:54,337 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1] [2023-11-06 23:00:54,338 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:00:54,338 INFO L748 eck$LassoCheckResult]: Stem: 192#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 193#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 194#L10-2 assume !!(main_~i~0#1 < 100); 191#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 189#L10-2 assume !!(main_~i~0#1 < 100); 190#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 200#L10-2 assume !!(main_~i~0#1 < 100); 199#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 198#L10-2 assume !!(main_~i~0#1 < 100); 197#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 196#L10-2 [2023-11-06 23:00:54,338 INFO L750 eck$LassoCheckResult]: Loop: 196#L10-2 assume !!(main_~i~0#1 < 100); 195#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 196#L10-2 [2023-11-06 23:00:54,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:54,339 INFO L85 PathProgramCache]: Analyzing trace with hash 742492623, now seen corresponding path program 2 times [2023-11-06 23:00:54,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:54,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084179265] [2023-11-06 23:00:54,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:54,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:54,360 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:54,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:54,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2023-11-06 23:00:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:54,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86310069] [2023-11-06 23:00:54,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:54,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:54,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:54,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:54,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:54,379 INFO L85 PathProgramCache]: Analyzing trace with hash 570839924, now seen corresponding path program 2 times [2023-11-06 23:00:54,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:54,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127232305] [2023-11-06 23:00:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:54,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:54,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:54,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127232305] [2023-11-06 23:00:54,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127232305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:54,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493643682] [2023-11-06 23:00:54,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:00:54,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:54,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:54,501 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:54,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 23:00:54,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:00:54,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:00:54,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:00:54,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:54,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:54,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493643682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:00:54,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:00:54,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-06 23:00:54,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516484456] [2023-11-06 23:00:54,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:00:54,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:54,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:54,738 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:54,738 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:54,738 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:54,738 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:54,738 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:00:54,738 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:54,738 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:54,739 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:54,739 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2023-11-06 23:00:54,739 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:54,739 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:54,740 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:54,763 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:54,767 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:54,839 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:54,839 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:00:54,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:54,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:54,851 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:54,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:54,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:54,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-06 23:00:54,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:54,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:54,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:54,887 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:54,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 23:00:54,894 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:00:54,894 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:54,919 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:00:54,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:54,929 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:54,929 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:54,930 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:54,930 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:54,930 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:00:54,930 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:54,930 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:54,930 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:54,930 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2023-11-06 23:00:54,930 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:54,930 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:54,932 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:54,943 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:54,954 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:55,008 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:55,009 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:00:55,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:55,010 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:55,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-06 23:00:55,016 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:55,030 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:55,030 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:55,030 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:55,030 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:55,030 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:55,032 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:55,032 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:55,042 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:00:55,046 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:00:55,046 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 23:00:55,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:55,050 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:55,060 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:00:55,060 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:00:55,060 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:00:55,061 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 [] [2023-11-06 23:00:55,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-06 23:00:55,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:55,072 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:00:55,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:55,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,129 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:55,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:55,137 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-06 23:00:55,137 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 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) [2023-11-06 23:00:55,153 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. 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) Result 13 states and 14 transitions. Complement of second has 5 states. [2023-11-06 23:00:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:55,156 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2023-11-06 23:00:55,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-06 23:00:55,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-06 23:00:55,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:55,158 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:00:55,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:55,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,221 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:55,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:55,227 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-11-06 23:00:55,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 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) [2023-11-06 23:00:55,238 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. 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) Result 13 states and 14 transitions. Complement of second has 5 states. [2023-11-06 23:00:55,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2023-11-06 23:00:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-06 23:00:55,242 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-06 23:00:55,242 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:55,242 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:00:55,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:55,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,288 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:55,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:55,295 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 1 loop predicates [2023-11-06 23:00:55,295 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2 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) [2023-11-06 23:00:55,309 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 13 transitions. cyclomatic complexity: 2. 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) Result 17 states and 19 transitions. Complement of second has 4 states. [2023-11-06 23:00:55,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2023-11-06 23:00:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2023-11-06 23:00:55,313 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-06 23:00:55,314 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:55,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 12 letters. Loop has 2 letters. [2023-11-06 23:00:55,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:55,315 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-06 23:00:55,315 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:55,316 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2023-11-06 23:00:55,321 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:00:55,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 16 transitions. [2023-11-06 23:00:55,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-06 23:00:55,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-06 23:00:55,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2023-11-06 23:00:55,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:55,323 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-11-06 23:00:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2023-11-06 23:00:55,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-11-06 23:00:55,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 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) [2023-11-06 23:00:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-06 23:00:55,325 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-06 23:00:55,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:55,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:00:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:00:55,328 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:55,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:55,382 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-11-06 23:00:55,382 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 34 transitions. [2023-11-06 23:00:55,385 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:00:55,386 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 28 transitions. [2023-11-06 23:00:55,386 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2023-11-06 23:00:55,387 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2023-11-06 23:00:55,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 28 transitions. [2023-11-06 23:00:55,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:55,387 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-06 23:00:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 28 transitions. [2023-11-06 23:00:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-11-06 23:00:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.08) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-06 23:00:55,395 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-06 23:00:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:00:55,396 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-06 23:00:55,396 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 23:00:55,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2023-11-06 23:00:55,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:00:55,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:55,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:55,398 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 1, 1] [2023-11-06 23:00:55,398 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:00:55,398 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_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 507#L10-2 assume !!(main_~i~0#1 < 100); 504#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 499#L10-2 assume !!(main_~i~0#1 < 100); 500#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 523#L10-2 assume !!(main_~i~0#1 < 100); 522#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 521#L10-2 assume !!(main_~i~0#1 < 100); 520#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 519#L10-2 assume !!(main_~i~0#1 < 100); 518#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 517#L10-2 assume !!(main_~i~0#1 < 100); 516#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 515#L10-2 assume !!(main_~i~0#1 < 100); 514#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 513#L10-2 assume !!(main_~i~0#1 < 100); 512#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 511#L10-2 assume !!(main_~i~0#1 < 100); 510#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 509#L10-2 assume !!(main_~i~0#1 < 100); 503#L10 [2023-11-06 23:00:55,400 INFO L750 eck$LassoCheckResult]: Loop: 503#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 508#L10-2 assume !!(main_~i~0#1 < 100); 503#L10 [2023-11-06 23:00:55,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,401 INFO L85 PathProgramCache]: Analyzing trace with hash -926509747, now seen corresponding path program 3 times [2023-11-06 23:00:55,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:55,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338883868] [2023-11-06 23:00:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:55,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:55,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:55,424 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:55,449 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:55,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2023-11-06 23:00:55,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:55,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499231107] [2023-11-06 23:00:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:55,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:55,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:55,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:55,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1317636150, now seen corresponding path program 4 times [2023-11-06 23:00:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:55,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140018160] [2023-11-06 23:00:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:55,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:55,476 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:55,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:55,523 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:55,523 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:55,523 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:55,523 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:55,523 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:00:55,523 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,524 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:55,524 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:55,524 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2023-11-06 23:00:55,524 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:55,524 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:55,525 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:55,529 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:55,536 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:55,580 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:55,580 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:00:55,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:55,582 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:55,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-06 23:00:55,588 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:55,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:55,618 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:55,618 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:00:55,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:55,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:55,630 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:55,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:55,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:55,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-06 23:00:55,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:55,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:55,670 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:55,675 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:00:55,675 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:55,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-06 23:00:55,717 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:00:55,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:55,728 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:55,728 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:55,728 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:55,728 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:55,728 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:00:55,729 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,729 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:55,729 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:55,729 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2023-11-06 23:00:55,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:55,729 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:55,730 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:55,738 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:55,747 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:55,788 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:55,788 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:00:55,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:55,790 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:55,794 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:55,806 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:55,806 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:55,807 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:55,807 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:55,807 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:55,809 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:55,809 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:55,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-06 23:00:55,822 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:00:55,825 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:00:55,825 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 23:00:55,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:55,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:55,829 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:55,834 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:00:55,834 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:00:55,834 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:00:55,834 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 99 Supporting invariants [] [2023-11-06 23:00:55,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-06 23:00:55,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:55,844 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:00:55,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:55,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:55,946 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:55,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:55,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:55,971 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-06 23:00:55,971 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 27 transitions. cyclomatic complexity: 3 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) [2023-11-06 23:00:55,987 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 27 transitions. cyclomatic complexity: 3. 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) Result 38 states and 42 transitions. Complement of second has 5 states. [2023-11-06 23:00:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:55,988 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2023-11-06 23:00:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-06 23:00:55,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 21 letters. Loop has 2 letters. [2023-11-06 23:00:55,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:55,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 23 letters. Loop has 2 letters. [2023-11-06 23:00:55,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:55,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 21 letters. Loop has 4 letters. [2023-11-06 23:00:55,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:55,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 42 transitions. [2023-11-06 23:00:55,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:00:55,993 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 28 states and 31 transitions. [2023-11-06 23:00:55,993 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-06 23:00:55,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-06 23:00:55,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 31 transitions. [2023-11-06 23:00:55,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:55,994 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-06 23:00:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 31 transitions. [2023-11-06 23:00:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-11-06 23:00:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:55,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-11-06 23:00:55,998 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-06 23:00:55,998 INFO L428 stractBuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-06 23:00:55,998 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 23:00:55,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2023-11-06 23:00:56,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-06 23:00:56,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:56,000 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:56,003 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 1, 1, 1] [2023-11-06 23:00:56,003 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 23:00:56,003 INFO L748 eck$LassoCheckResult]: Stem: 659#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 660#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 661#L10-2 assume !!(main_~i~0#1 < 100); 656#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 657#L10-2 assume !!(main_~i~0#1 < 100); 658#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 654#L10-2 assume !!(main_~i~0#1 < 100); 655#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 677#L10-2 assume !!(main_~i~0#1 < 100); 676#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 675#L10-2 assume !!(main_~i~0#1 < 100); 674#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 673#L10-2 assume !!(main_~i~0#1 < 100); 672#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 671#L10-2 assume !!(main_~i~0#1 < 100); 670#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 669#L10-2 assume !!(main_~i~0#1 < 100); 668#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 667#L10-2 assume !!(main_~i~0#1 < 100); 666#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 665#L10-2 assume !!(main_~i~0#1 < 100); 664#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 663#L10-2 assume !!(main_~i~0#1 < 100); 652#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 662#L10-2 assume !!(main_~i~0#1 < 100); 653#L10 [2023-11-06 23:00:56,003 INFO L750 eck$LassoCheckResult]: Loop: 653#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 651#L10-2 assume !!(main_~i~0#1 < 100); 653#L10 [2023-11-06 23:00:56,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:56,004 INFO L85 PathProgramCache]: Analyzing trace with hash 767012677, now seen corresponding path program 3 times [2023-11-06 23:00:56,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:56,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247329744] [2023-11-06 23:00:56,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:56,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:56,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:56,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247329744] [2023-11-06 23:00:56,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247329744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:56,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715660054] [2023-11-06 23:00:56,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:00:56,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:56,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:56,267 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:56,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-06 23:00:56,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-06 23:00:56,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:00:56,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:00:56,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:56,398 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:56,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:56,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715660054] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:00:56,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:00:56,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2023-11-06 23:00:56,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416061354] [2023-11-06 23:00:56,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:00:56,674 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 23:00:56,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:56,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2023-11-06 23:00:56,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:56,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674796711] [2023-11-06 23:00:56,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:56,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:56,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:56,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:56,712 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:56,712 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:56,712 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:56,712 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:56,713 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 23:00:56,713 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:56,713 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:56,713 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:56,713 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration5_Loop [2023-11-06 23:00:56,713 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:56,714 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:56,716 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:56,721 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:56,724 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:56,762 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:56,762 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 23:00:56,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:56,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:56,769 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:56,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:56,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:56,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-06 23:00:56,804 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:56,804 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:00:56,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-06 23:00:56,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:56,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:56,808 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:56,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-06 23:00:56,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:56,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:56,856 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 23:00:56,857 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 23:00:56,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:56,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:56,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:56,862 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:56,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 23:00:56,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:56,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-06 23:00:56,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:56,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:56,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:56,895 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:56,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 23:00:56,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 23:00:56,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-06 23:00:56,934 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 23:00:56,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:56,942 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 23:00:56,942 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 23:00:56,942 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 23:00:56,943 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 23:00:56,943 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 23:00:56,943 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:56,943 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 23:00:56,943 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 23:00:56,943 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration5_Loop [2023-11-06 23:00:56,943 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 23:00:56,943 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 23:00:56,944 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:56,948 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:56,952 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 23:00:56,996 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 23:00:56,996 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 23:00:56,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:56,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:56,997 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:57,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:57,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-06 23:00:57,020 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:57,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:57,021 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:57,021 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:57,023 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 23:00:57,023 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 23:00:57,040 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:00:57,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:57,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:57,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:57,051 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:57,062 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:57,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-06 23:00:57,076 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:57,076 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:57,076 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:57,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:57,078 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 23:00:57,079 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 23:00:57,105 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 23:00:57,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:57,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:57,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:57,116 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:57,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-06 23:00:57,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-06 23:00:57,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 23:00:57,135 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 23:00:57,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 23:00:57,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 23:00:57,135 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 23:00:57,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 23:00:57,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 23:00:57,165 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 23:00:57,168 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 23:00:57,169 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-06 23:00:57,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 23:00:57,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:57,173 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:57,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-06 23:00:57,177 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 23:00:57,177 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 23:00:57,177 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 23:00:57,177 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 99 Supporting invariants [] [2023-11-06 23:00:57,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:57,183 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 23:00:57,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:57,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:57,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:57,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:57,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:57,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:57,300 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:57,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:57,320 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-06 23:00:57,320 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:57,331 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 38 states and 42 transitions. Complement of second has 5 states. [2023-11-06 23:00:57,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:57,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:57,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-06 23:00:57,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-06 23:00:57,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:57,333 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:00:57,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:57,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:57,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:57,396 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:57,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:57,415 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 [2023-11-06 23:00:57,415 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:57,432 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 39 states and 43 transitions. Complement of second has 5 states. [2023-11-06 23:00:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-06 23:00:57,434 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-06 23:00:57,434 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:57,434 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-06 23:00:57,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:57,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 23:00:57,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:57,505 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:00:57,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:57,525 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 [2023-11-06 23:00:57,525 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:57,542 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 30 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 40 states and 45 transitions. Complement of second has 4 states. [2023-11-06 23:00:57,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 23:00:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-11-06 23:00:57,544 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-06 23:00:57,544 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:57,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 27 letters. Loop has 2 letters. [2023-11-06 23:00:57,545 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:57,545 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 25 letters. Loop has 4 letters. [2023-11-06 23:00:57,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 23:00:57,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2023-11-06 23:00:57,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-06 23:00:57,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 29 states and 32 transitions. [2023-11-06 23:00:57,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-06 23:00:57,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-06 23:00:57,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 32 transitions. [2023-11-06 23:00:57,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:57,549 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-06 23:00:57,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 32 transitions. [2023-11-06 23:00:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2023-11-06 23:00:57,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 25 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) [2023-11-06 23:00:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-11-06 23:00:57,552 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-06 23:00:57,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:57,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 23:00:57,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:00:57,554 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 24 states, 24 states have (on average 2.0) internal successors, (48), 24 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) [2023-11-06 23:00:57,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:57,658 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2023-11-06 23:00:57,658 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 65 transitions. [2023-11-06 23:00:57,660 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 23:00:57,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 51 states and 53 transitions. [2023-11-06 23:00:57,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-06 23:00:57,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-06 23:00:57,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 53 transitions. [2023-11-06 23:00:57,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:57,662 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 53 transitions. [2023-11-06 23:00:57,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 53 transitions. [2023-11-06 23:00:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-06 23:00:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 50 states have (on average 1.04) internal successors, (52), 49 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-11-06 23:00:57,667 INFO L240 hiAutomatonCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-11-06 23:00:57,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 23:00:57,668 INFO L428 stractBuchiCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-11-06 23:00:57,668 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 23:00:57,668 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 52 transitions. [2023-11-06 23:00:57,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 23:00:57,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:57,670 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:57,672 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [24, 22, 1, 1, 1] [2023-11-06 23:00:57,672 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-06 23:00:57,672 INFO L748 eck$LassoCheckResult]: Stem: 1326#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1327#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 1320#L10-2 assume !!(main_~i~0#1 < 100); 1321#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1324#L10-2 assume !!(main_~i~0#1 < 100); 1325#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1322#L10-2 assume !!(main_~i~0#1 < 100); 1323#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1369#L10-2 assume !!(main_~i~0#1 < 100); 1368#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1367#L10-2 assume !!(main_~i~0#1 < 100); 1366#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1365#L10-2 assume !!(main_~i~0#1 < 100); 1364#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1363#L10-2 assume !!(main_~i~0#1 < 100); 1362#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1361#L10-2 assume !!(main_~i~0#1 < 100); 1360#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1359#L10-2 assume !!(main_~i~0#1 < 100); 1358#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1357#L10-2 assume !!(main_~i~0#1 < 100); 1356#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1355#L10-2 assume !!(main_~i~0#1 < 100); 1354#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1353#L10-2 assume !!(main_~i~0#1 < 100); 1352#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1351#L10-2 assume !!(main_~i~0#1 < 100); 1350#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1349#L10-2 assume !!(main_~i~0#1 < 100); 1348#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1347#L10-2 assume !!(main_~i~0#1 < 100); 1346#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1345#L10-2 assume !!(main_~i~0#1 < 100); 1344#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1343#L10-2 assume !!(main_~i~0#1 < 100); 1342#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1341#L10-2 assume !!(main_~i~0#1 < 100); 1340#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1339#L10-2 assume !!(main_~i~0#1 < 100); 1338#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1337#L10-2 assume !!(main_~i~0#1 < 100); 1336#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1335#L10-2 assume !!(main_~i~0#1 < 100); 1334#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1333#L10-2 assume !!(main_~i~0#1 < 100); 1332#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1331#L10-2 assume !!(main_~i~0#1 < 100); 1329#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 1328#L10-2 assume !!(main_~i~0#1 < 100); 1330#L10 [2023-11-06 23:00:57,672 INFO L750 eck$LassoCheckResult]: Loop: 1330#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1331#L10-2 assume !!(main_~i~0#1 < 100); 1329#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 1328#L10-2 assume !!(main_~i~0#1 < 100); 1330#L10 [2023-11-06 23:00:57,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:57,673 INFO L85 PathProgramCache]: Analyzing trace with hash -694298463, now seen corresponding path program 4 times [2023-11-06 23:00:57,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:57,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691409672] [2023-11-06 23:00:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:57,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:58,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:58,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691409672] [2023-11-06 23:00:58,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691409672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:58,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21628028] [2023-11-06 23:00:58,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 23:00:58,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:58,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:58,432 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:58,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-06 23:00:58,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 23:00:58,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:00:58,504 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 23:00:58,509 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:58,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:00:59,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21628028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:00:59,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:00:59,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2023-11-06 23:00:59,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632563870] [2023-11-06 23:00:59,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:00:59,639 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 23:00:59,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:59,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 1 times [2023-11-06 23:00:59,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:59,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991823240] [2023-11-06 23:00:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:59,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:59,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:59,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:00:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:00:59,644 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:00:59,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:59,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-06 23:00:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 23:00:59,681 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. cyclomatic complexity: 3 Second operand has 48 states, 48 states have (on average 2.0) internal successors, (96), 48 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:59,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:59,888 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2023-11-06 23:00:59,888 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 125 transitions. [2023-11-06 23:00:59,894 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 23:00:59,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 99 states and 101 transitions. [2023-11-06 23:00:59,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-06 23:00:59,900 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-06 23:00:59,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 101 transitions. [2023-11-06 23:00:59,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:00:59,900 INFO L218 hiAutomatonCegarLoop]: Abstraction has 99 states and 101 transitions. [2023-11-06 23:00:59,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 101 transitions. [2023-11-06 23:00:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2023-11-06 23:00:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 97 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:00:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2023-11-06 23:00:59,922 INFO L240 hiAutomatonCegarLoop]: Abstraction has 98 states and 100 transitions. [2023-11-06 23:00:59,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 23:00:59,924 INFO L428 stractBuchiCegarLoop]: Abstraction has 98 states and 100 transitions. [2023-11-06 23:00:59,925 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-06 23:00:59,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 100 transitions. [2023-11-06 23:00:59,927 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 23:00:59,927 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:00:59,927 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:00:59,932 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [48, 46, 1, 1, 1] [2023-11-06 23:00:59,932 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-06 23:00:59,933 INFO L748 eck$LassoCheckResult]: Stem: 1838#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 1839#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 1832#L10-2 assume !!(main_~i~0#1 < 100); 1833#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1836#L10-2 assume !!(main_~i~0#1 < 100); 1837#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1834#L10-2 assume !!(main_~i~0#1 < 100); 1835#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1929#L10-2 assume !!(main_~i~0#1 < 100); 1928#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1927#L10-2 assume !!(main_~i~0#1 < 100); 1926#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1925#L10-2 assume !!(main_~i~0#1 < 100); 1924#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1923#L10-2 assume !!(main_~i~0#1 < 100); 1922#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1921#L10-2 assume !!(main_~i~0#1 < 100); 1920#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1919#L10-2 assume !!(main_~i~0#1 < 100); 1918#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1917#L10-2 assume !!(main_~i~0#1 < 100); 1916#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1915#L10-2 assume !!(main_~i~0#1 < 100); 1914#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1913#L10-2 assume !!(main_~i~0#1 < 100); 1912#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1911#L10-2 assume !!(main_~i~0#1 < 100); 1910#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1909#L10-2 assume !!(main_~i~0#1 < 100); 1908#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1907#L10-2 assume !!(main_~i~0#1 < 100); 1906#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1905#L10-2 assume !!(main_~i~0#1 < 100); 1904#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1903#L10-2 assume !!(main_~i~0#1 < 100); 1902#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1901#L10-2 assume !!(main_~i~0#1 < 100); 1900#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1899#L10-2 assume !!(main_~i~0#1 < 100); 1898#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1897#L10-2 assume !!(main_~i~0#1 < 100); 1896#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1895#L10-2 assume !!(main_~i~0#1 < 100); 1894#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1893#L10-2 assume !!(main_~i~0#1 < 100); 1892#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1891#L10-2 assume !!(main_~i~0#1 < 100); 1890#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1889#L10-2 assume !!(main_~i~0#1 < 100); 1888#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1887#L10-2 assume !!(main_~i~0#1 < 100); 1886#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1885#L10-2 assume !!(main_~i~0#1 < 100); 1884#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1883#L10-2 assume !!(main_~i~0#1 < 100); 1882#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1881#L10-2 assume !!(main_~i~0#1 < 100); 1880#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1879#L10-2 assume !!(main_~i~0#1 < 100); 1878#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1877#L10-2 assume !!(main_~i~0#1 < 100); 1876#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1875#L10-2 assume !!(main_~i~0#1 < 100); 1874#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1873#L10-2 assume !!(main_~i~0#1 < 100); 1872#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1871#L10-2 assume !!(main_~i~0#1 < 100); 1870#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1869#L10-2 assume !!(main_~i~0#1 < 100); 1868#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1867#L10-2 assume !!(main_~i~0#1 < 100); 1866#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1865#L10-2 assume !!(main_~i~0#1 < 100); 1864#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1863#L10-2 assume !!(main_~i~0#1 < 100); 1862#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1861#L10-2 assume !!(main_~i~0#1 < 100); 1860#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1859#L10-2 assume !!(main_~i~0#1 < 100); 1858#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1857#L10-2 assume !!(main_~i~0#1 < 100); 1856#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1855#L10-2 assume !!(main_~i~0#1 < 100); 1854#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1853#L10-2 assume !!(main_~i~0#1 < 100); 1852#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1851#L10-2 assume !!(main_~i~0#1 < 100); 1850#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1849#L10-2 assume !!(main_~i~0#1 < 100); 1848#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1847#L10-2 assume !!(main_~i~0#1 < 100); 1846#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1845#L10-2 assume !!(main_~i~0#1 < 100); 1844#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1843#L10-2 assume !!(main_~i~0#1 < 100); 1841#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 1840#L10-2 assume !!(main_~i~0#1 < 100); 1842#L10 [2023-11-06 23:00:59,933 INFO L750 eck$LassoCheckResult]: Loop: 1842#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 1843#L10-2 assume !!(main_~i~0#1 < 100); 1841#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 1840#L10-2 assume !!(main_~i~0#1 < 100); 1842#L10 [2023-11-06 23:00:59,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:59,934 INFO L85 PathProgramCache]: Analyzing trace with hash -818401447, now seen corresponding path program 5 times [2023-11-06 23:00:59,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:59,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827723890] [2023-11-06 23:00:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:59,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:02,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827723890] [2023-11-06 23:01:02,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827723890] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:01:02,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638958403] [2023-11-06 23:01:02,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 23:01:02,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:01:02,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:02,118 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:01:02,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-06 23:01:02,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2023-11-06 23:01:02,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:01:02,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-06 23:01:02,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:01:02,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:02,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:01:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:04,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638958403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:01:04,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:01:04,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2023-11-06 23:01:04,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649648807] [2023-11-06 23:01:04,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:01:04,056 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 23:01:04,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 2 times [2023-11-06 23:01:04,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:04,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746457681] [2023-11-06 23:01:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:04,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:04,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:01:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:04,065 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:01:04,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:04,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-06 23:01:04,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2023-11-06 23:01:04,096 INFO L87 Difference]: Start difference. First operand 98 states and 100 transitions. cyclomatic complexity: 3 Second operand has 52 states, 52 states have (on average 2.019230769230769) internal successors, (105), 52 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:04,290 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2023-11-06 23:01:04,290 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 113 transitions. [2023-11-06 23:01:04,292 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 23:01:04,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 107 states and 109 transitions. [2023-11-06 23:01:04,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-06 23:01:04,293 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-06 23:01:04,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 109 transitions. [2023-11-06 23:01:04,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 23:01:04,294 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 109 transitions. [2023-11-06 23:01:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 109 transitions. [2023-11-06 23:01:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2023-11-06 23:01:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 105 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:01:04,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2023-11-06 23:01:04,316 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 108 transitions. [2023-11-06 23:01:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-06 23:01:04,317 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 108 transitions. [2023-11-06 23:01:04,317 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-06 23:01:04,317 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 108 transitions. [2023-11-06 23:01:04,318 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-06 23:01:04,318 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 23:01:04,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 23:01:04,326 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [52, 50, 1, 1, 1] [2023-11-06 23:01:04,329 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-06 23:01:04,329 INFO L748 eck$LassoCheckResult]: Stem: 2678#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 2679#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 2672#L10-2 assume !!(main_~i~0#1 < 100); 2673#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2676#L10-2 assume !!(main_~i~0#1 < 100); 2677#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2674#L10-2 assume !!(main_~i~0#1 < 100); 2675#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2777#L10-2 assume !!(main_~i~0#1 < 100); 2776#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2775#L10-2 assume !!(main_~i~0#1 < 100); 2774#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2773#L10-2 assume !!(main_~i~0#1 < 100); 2772#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2771#L10-2 assume !!(main_~i~0#1 < 100); 2770#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2769#L10-2 assume !!(main_~i~0#1 < 100); 2768#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2767#L10-2 assume !!(main_~i~0#1 < 100); 2766#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2765#L10-2 assume !!(main_~i~0#1 < 100); 2764#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2763#L10-2 assume !!(main_~i~0#1 < 100); 2762#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2761#L10-2 assume !!(main_~i~0#1 < 100); 2760#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2759#L10-2 assume !!(main_~i~0#1 < 100); 2758#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2757#L10-2 assume !!(main_~i~0#1 < 100); 2756#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2755#L10-2 assume !!(main_~i~0#1 < 100); 2754#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2753#L10-2 assume !!(main_~i~0#1 < 100); 2752#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2751#L10-2 assume !!(main_~i~0#1 < 100); 2750#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2749#L10-2 assume !!(main_~i~0#1 < 100); 2748#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2747#L10-2 assume !!(main_~i~0#1 < 100); 2746#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2745#L10-2 assume !!(main_~i~0#1 < 100); 2744#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2743#L10-2 assume !!(main_~i~0#1 < 100); 2742#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2741#L10-2 assume !!(main_~i~0#1 < 100); 2740#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2739#L10-2 assume !!(main_~i~0#1 < 100); 2738#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2737#L10-2 assume !!(main_~i~0#1 < 100); 2736#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2735#L10-2 assume !!(main_~i~0#1 < 100); 2734#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2733#L10-2 assume !!(main_~i~0#1 < 100); 2732#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2731#L10-2 assume !!(main_~i~0#1 < 100); 2730#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2729#L10-2 assume !!(main_~i~0#1 < 100); 2728#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2727#L10-2 assume !!(main_~i~0#1 < 100); 2726#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2725#L10-2 assume !!(main_~i~0#1 < 100); 2724#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2723#L10-2 assume !!(main_~i~0#1 < 100); 2722#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2721#L10-2 assume !!(main_~i~0#1 < 100); 2720#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2719#L10-2 assume !!(main_~i~0#1 < 100); 2718#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2717#L10-2 assume !!(main_~i~0#1 < 100); 2716#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2715#L10-2 assume !!(main_~i~0#1 < 100); 2714#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2713#L10-2 assume !!(main_~i~0#1 < 100); 2712#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2711#L10-2 assume !!(main_~i~0#1 < 100); 2710#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2709#L10-2 assume !!(main_~i~0#1 < 100); 2708#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2707#L10-2 assume !!(main_~i~0#1 < 100); 2706#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2705#L10-2 assume !!(main_~i~0#1 < 100); 2704#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2703#L10-2 assume !!(main_~i~0#1 < 100); 2702#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2701#L10-2 assume !!(main_~i~0#1 < 100); 2700#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2699#L10-2 assume !!(main_~i~0#1 < 100); 2698#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2697#L10-2 assume !!(main_~i~0#1 < 100); 2696#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2695#L10-2 assume !!(main_~i~0#1 < 100); 2694#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2693#L10-2 assume !!(main_~i~0#1 < 100); 2692#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2691#L10-2 assume !!(main_~i~0#1 < 100); 2690#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2689#L10-2 assume !!(main_~i~0#1 < 100); 2688#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2687#L10-2 assume !!(main_~i~0#1 < 100); 2686#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2685#L10-2 assume !!(main_~i~0#1 < 100); 2684#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2683#L10-2 assume !!(main_~i~0#1 < 100); 2681#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 2680#L10-2 assume !!(main_~i~0#1 < 100); 2682#L10 [2023-11-06 23:01:04,332 INFO L750 eck$LassoCheckResult]: Loop: 2682#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 2683#L10-2 assume !!(main_~i~0#1 < 100); 2681#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 2680#L10-2 assume !!(main_~i~0#1 < 100); 2682#L10 [2023-11-06 23:01:04,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1468745677, now seen corresponding path program 6 times [2023-11-06 23:01:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684446879] [2023-11-06 23:01:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:04,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:04,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:01:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:04,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:01:04,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:04,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 3 times [2023-11-06 23:01:04,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:04,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941872253] [2023-11-06 23:01:04,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:04,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:04,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:01:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:04,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:01:04,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1914756667, now seen corresponding path program 7 times [2023-11-06 23:01:04,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:04,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985865200] [2023-11-06 23:01:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:04,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:04,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:01:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:04,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 23:01:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:06,452 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 23:01:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 23:01:06,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 11:01:06 BoogieIcfgContainer [2023-11-06 23:01:06,552 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 23:01:06,553 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:01:06,553 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:01:06,553 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:01:06,554 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:52" (3/4) ... [2023-11-06 23:01:06,555 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 23:01:06,616 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:01:06,616 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:01:06,617 INFO L158 Benchmark]: Toolchain (without parser) took 15184.83ms. Allocated memory was 130.0MB in the beginning and 234.9MB in the end (delta: 104.9MB). Free memory was 85.5MB in the beginning and 69.2MB in the end (delta: 16.3MB). Peak memory consumption was 122.8MB. Max. memory is 16.1GB. [2023-11-06 23:01:06,618 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 130.0MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:01:06,618 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.70ms. Allocated memory is still 130.0MB. Free memory was 85.2MB in the beginning and 76.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:01:06,618 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.26ms. Allocated memory is still 130.0MB. Free memory was 76.0MB in the beginning and 74.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:01:06,619 INFO L158 Benchmark]: Boogie Preprocessor took 25.24ms. Allocated memory is still 130.0MB. Free memory was 74.6MB in the beginning and 73.9MB in the end (delta: 741.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:01:06,619 INFO L158 Benchmark]: RCFGBuilder took 293.65ms. Allocated memory is still 130.0MB. Free memory was 73.6MB in the beginning and 65.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 23:01:06,620 INFO L158 Benchmark]: BuchiAutomizer took 14502.84ms. Allocated memory was 130.0MB in the beginning and 234.9MB in the end (delta: 104.9MB). Free memory was 65.5MB in the beginning and 72.4MB in the end (delta: -6.8MB). Peak memory consumption was 99.7MB. Max. memory is 16.1GB. [2023-11-06 23:01:06,620 INFO L158 Benchmark]: Witness Printer took 63.71ms. Allocated memory is still 234.9MB. Free memory was 72.4MB in the beginning and 69.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:01:06,622 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 130.0MB. Free memory is still 101.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.70ms. Allocated memory is still 130.0MB. Free memory was 85.2MB in the beginning and 76.0MB in the end (delta: 9.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.26ms. Allocated memory is still 130.0MB. Free memory was 76.0MB in the beginning and 74.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.24ms. Allocated memory is still 130.0MB. Free memory was 74.6MB in the beginning and 73.9MB in the end (delta: 741.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 293.65ms. Allocated memory is still 130.0MB. Free memory was 73.6MB in the beginning and 65.9MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 14502.84ms. Allocated memory was 130.0MB in the beginning and 234.9MB in the end (delta: 104.9MB). Free memory was 65.5MB in the beginning and 72.4MB in the end (delta: -6.8MB). Peak memory consumption was 99.7MB. Max. memory is 16.1GB. * Witness Printer took 63.71ms. Allocated memory is still 234.9MB. Free memory was 72.4MB in the beginning and 69.2MB 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 11 terminating modules (6 trivial, 3 deterministic, 2 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function ((-2 * i) + 99) and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function ((-2 * i) + 99) and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 52 locations. The remainder module has 106 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 14.3s and 8 iterations. TraceHistogramMax:52. Analysis of lassos took 12.4s. Construction of modules took 0.4s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 9. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 9 StatesRemovedByMinimization, 7 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 [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 350 IncrementalHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 53 mSDtfsCounter, 350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN2 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax203 hnf100 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf94 smp100 dnf100 smp100 tf112 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 75ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = 0 VAL [i=0] [L9] COND TRUE i < 100 VAL [i=0] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=1] [L9] COND TRUE i < 100 VAL [i=1] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=2] [L9] COND TRUE i < 100 VAL [i=2] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=3] [L9] COND TRUE i < 100 VAL [i=3] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=4] [L9] COND TRUE i < 100 VAL [i=4] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=5] [L9] COND TRUE i < 100 VAL [i=5] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=6] [L9] COND TRUE i < 100 VAL [i=6] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=7] [L9] COND TRUE i < 100 VAL [i=7] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=8] [L9] COND TRUE i < 100 VAL [i=8] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=9] [L9] COND TRUE i < 100 VAL [i=9] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=10] [L9] COND TRUE i < 100 VAL [i=10] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=11] [L9] COND TRUE i < 100 VAL [i=11] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=12] [L9] COND TRUE i < 100 VAL [i=12] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=13] [L9] COND TRUE i < 100 VAL [i=13] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=14] [L9] COND TRUE i < 100 VAL [i=14] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=15] [L9] COND TRUE i < 100 VAL [i=15] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=16] [L9] COND TRUE i < 100 VAL [i=16] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=17] [L9] COND TRUE i < 100 VAL [i=17] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=18] [L9] COND TRUE i < 100 VAL [i=18] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=19] [L9] COND TRUE i < 100 VAL [i=19] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=20] [L9] COND TRUE i < 100 VAL [i=20] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=21] [L9] COND TRUE i < 100 VAL [i=21] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=22] [L9] COND TRUE i < 100 VAL [i=22] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=23] [L9] COND TRUE i < 100 VAL [i=23] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=24] [L9] COND TRUE i < 100 VAL [i=24] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=25] [L9] COND TRUE i < 100 VAL [i=25] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=26] [L9] COND TRUE i < 100 VAL [i=26] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=27] [L9] COND TRUE i < 100 VAL [i=27] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=28] [L9] COND TRUE i < 100 VAL [i=28] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=29] [L9] COND TRUE i < 100 VAL [i=29] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=30] [L9] COND TRUE i < 100 VAL [i=30] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=31] [L9] COND TRUE i < 100 VAL [i=31] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=32] [L9] COND TRUE i < 100 VAL [i=32] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=33] [L9] COND TRUE i < 100 VAL [i=33] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=34] [L9] COND TRUE i < 100 VAL [i=34] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=35] [L9] COND TRUE i < 100 VAL [i=35] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=36] [L9] COND TRUE i < 100 VAL [i=36] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=37] [L9] COND TRUE i < 100 VAL [i=37] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=38] [L9] COND TRUE i < 100 VAL [i=38] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=39] [L9] COND TRUE i < 100 VAL [i=39] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=40] [L9] COND TRUE i < 100 VAL [i=40] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=41] [L9] COND TRUE i < 100 VAL [i=41] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=42] [L9] COND TRUE i < 100 VAL [i=42] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=43] [L9] COND TRUE i < 100 VAL [i=43] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=44] [L9] COND TRUE i < 100 VAL [i=44] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=45] [L9] COND TRUE i < 100 VAL [i=45] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=46] [L9] COND TRUE i < 100 VAL [i=46] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=47] [L9] COND TRUE i < 100 VAL [i=47] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=48] [L9] COND TRUE i < 100 VAL [i=48] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=49] [L9] COND TRUE i < 100 VAL [i=49] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=50] [L9] COND TRUE i < 100 VAL [i=50] [L10] COND FALSE !(i < 50) [L11] i = i-1 VAL [i=49] [L9] COND TRUE i < 100 VAL [i=49] Loop: [L10] COND TRUE i < 50 [L10] i = i+1 [L9] COND TRUE i < 100 [L10] COND FALSE !(i < 50) [L11] i = i-1 [L9] COND TRUE i < 100 End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = 0 VAL [i=0] [L9] COND TRUE i < 100 VAL [i=0] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=1] [L9] COND TRUE i < 100 VAL [i=1] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=2] [L9] COND TRUE i < 100 VAL [i=2] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=3] [L9] COND TRUE i < 100 VAL [i=3] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=4] [L9] COND TRUE i < 100 VAL [i=4] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=5] [L9] COND TRUE i < 100 VAL [i=5] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=6] [L9] COND TRUE i < 100 VAL [i=6] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=7] [L9] COND TRUE i < 100 VAL [i=7] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=8] [L9] COND TRUE i < 100 VAL [i=8] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=9] [L9] COND TRUE i < 100 VAL [i=9] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=10] [L9] COND TRUE i < 100 VAL [i=10] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=11] [L9] COND TRUE i < 100 VAL [i=11] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=12] [L9] COND TRUE i < 100 VAL [i=12] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=13] [L9] COND TRUE i < 100 VAL [i=13] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=14] [L9] COND TRUE i < 100 VAL [i=14] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=15] [L9] COND TRUE i < 100 VAL [i=15] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=16] [L9] COND TRUE i < 100 VAL [i=16] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=17] [L9] COND TRUE i < 100 VAL [i=17] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=18] [L9] COND TRUE i < 100 VAL [i=18] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=19] [L9] COND TRUE i < 100 VAL [i=19] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=20] [L9] COND TRUE i < 100 VAL [i=20] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=21] [L9] COND TRUE i < 100 VAL [i=21] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=22] [L9] COND TRUE i < 100 VAL [i=22] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=23] [L9] COND TRUE i < 100 VAL [i=23] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=24] [L9] COND TRUE i < 100 VAL [i=24] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=25] [L9] COND TRUE i < 100 VAL [i=25] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=26] [L9] COND TRUE i < 100 VAL [i=26] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=27] [L9] COND TRUE i < 100 VAL [i=27] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=28] [L9] COND TRUE i < 100 VAL [i=28] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=29] [L9] COND TRUE i < 100 VAL [i=29] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=30] [L9] COND TRUE i < 100 VAL [i=30] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=31] [L9] COND TRUE i < 100 VAL [i=31] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=32] [L9] COND TRUE i < 100 VAL [i=32] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=33] [L9] COND TRUE i < 100 VAL [i=33] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=34] [L9] COND TRUE i < 100 VAL [i=34] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=35] [L9] COND TRUE i < 100 VAL [i=35] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=36] [L9] COND TRUE i < 100 VAL [i=36] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=37] [L9] COND TRUE i < 100 VAL [i=37] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=38] [L9] COND TRUE i < 100 VAL [i=38] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=39] [L9] COND TRUE i < 100 VAL [i=39] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=40] [L9] COND TRUE i < 100 VAL [i=40] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=41] [L9] COND TRUE i < 100 VAL [i=41] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=42] [L9] COND TRUE i < 100 VAL [i=42] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=43] [L9] COND TRUE i < 100 VAL [i=43] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=44] [L9] COND TRUE i < 100 VAL [i=44] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=45] [L9] COND TRUE i < 100 VAL [i=45] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=46] [L9] COND TRUE i < 100 VAL [i=46] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=47] [L9] COND TRUE i < 100 VAL [i=47] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=48] [L9] COND TRUE i < 100 VAL [i=48] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=49] [L9] COND TRUE i < 100 VAL [i=49] [L10] COND TRUE i < 50 [L10] i = i+1 VAL [i=50] [L9] COND TRUE i < 100 VAL [i=50] [L10] COND FALSE !(i < 50) [L11] i = i-1 VAL [i=49] [L9] COND TRUE i < 100 VAL [i=49] Loop: [L10] COND TRUE i < 50 [L10] i = i+1 [L9] COND TRUE i < 100 [L10] COND FALSE !(i < 50) [L11] i = i-1 [L9] COND TRUE i < 100 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 23:01:06,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-06 23:01:06,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-06 23:01:07,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-06 23:01:07,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-06 23:01:07,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:01:07,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4129408b-9f8e-45eb-ad81-62682808e79a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)