./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2aebec197cf7bd355d2eb5f718c983de149eae8f5ff2da107813d58a220d4744 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:17:31,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:17:31,800 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-12 02:17:31,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:17:31,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:17:31,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:17:31,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:17:31,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:17:31,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:17:31,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:17:31,837 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:17:31,838 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-12 02:17:31,839 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-12 02:17:31,863 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-12 02:17:31,864 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-12 02:17:31,865 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-12 02:17:31,866 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-12 02:17:31,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:17:31,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-12 02:17:31,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:17:31,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:17:31,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-12 02:17:31,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-12 02:17:31,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-12 02:17:31,871 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:17:31,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:17:31,872 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-12 02:17:31,873 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:17:31,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:17:31,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:17:31,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:17:31,876 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:17:31,876 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-12 02:17:31,877 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_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aebec197cf7bd355d2eb5f718c983de149eae8f5ff2da107813d58a220d4744 [2023-11-12 02:17:32,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:17:32,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:17:32,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:17:32,197 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:17:32,197 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:17:32,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/termination-restricted-15/NO_22.c [2023-11-12 02:17:35,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:17:35,872 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:17:35,873 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/sv-benchmarks/c/termination-restricted-15/NO_22.c [2023-11-12 02:17:35,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/data/d379b59ec/5d310056f3494b789442019b47e55101/FLAG1d5470c6f [2023-11-12 02:17:35,899 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/data/d379b59ec/5d310056f3494b789442019b47e55101 [2023-11-12 02:17:35,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:17:35,904 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:17:35,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:35,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:17:35,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:17:35,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:35" (1/1) ... [2023-11-12 02:17:35,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74452030 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:35, skipping insertion in model container [2023-11-12 02:17:35,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:17:35" (1/1) ... [2023-11-12 02:17:35,940 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:17:36,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:36,081 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:17:36,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:17:36,105 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:17:36,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36 WrapperNode [2023-11-12 02:17:36,106 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:17:36,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:36,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:17:36,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:17:36,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,121 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,140 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2023-11-12 02:17:36,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:17:36,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:17:36,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:17:36,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:17:36,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,152 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:17:36,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:17:36,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:17:36,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:17:36,169 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (1/1) ... [2023-11-12 02:17:36,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:36,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:36,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:36,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-12 02:17:36,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:17:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:17:36,333 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:17:36,335 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:17:36,391 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:17:36,399 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:17:36,399 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:17:36,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:36 BoogieIcfgContainer [2023-11-12 02:17:36,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:17:36,404 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-12 02:17:36,404 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-12 02:17:36,409 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-12 02:17:36,410 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:17:36,410 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 02:17:35" (1/3) ... [2023-11-12 02:17:36,412 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24dfc90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:17:36, skipping insertion in model container [2023-11-12 02:17:36,412 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:17:36,412 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:17:36" (2/3) ... [2023-11-12 02:17:36,413 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24dfc90a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:17:36, skipping insertion in model container [2023-11-12 02:17:36,413 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:17:36,413 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:36" (3/3) ... [2023-11-12 02:17:36,415 INFO L332 chiAutomizerObserver]: Analyzing ICFG NO_22.c [2023-11-12 02:17:36,469 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-12 02:17:36,470 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-12 02:17:36,470 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-12 02:17:36,470 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-12 02:17:36,470 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-12 02:17:36,471 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-12 02:17:36,471 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-12 02:17:36,471 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-12 02:17:36,476 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) [2023-11-12 02:17:36,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-12 02:17:36,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:36,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:36,503 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:17:36,503 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-12 02:17:36,504 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-12 02:17:36,504 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) [2023-11-12 02:17:36,505 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-12 02:17:36,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:36,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:36,506 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-12 02:17:36,506 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-12 02:17:36,513 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 3#L10-2true [2023-11-12 02:17:36,514 INFO L750 eck$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 [2023-11-12 02:17:36,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:36,519 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-12 02:17:36,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:36,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662268555] [2023-11-12 02:17:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:36,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:36,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:36,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-11-12 02:17:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:36,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161439938] [2023-11-12 02:17:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:36,698 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:36,713 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:36,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:36,716 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-11-12 02:17:36,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:36,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664908035] [2023-11-12 02:17:36,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:36,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664908035] [2023-11-12 02:17:36,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664908035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:36,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:36,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:36,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411291979] [2023-11-12 02:17:36,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:36,968 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:36,969 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:36,969 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:36,969 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:36,969 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-12 02:17:36,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:36,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:36,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:36,970 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2023-11-12 02:17:36,971 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:36,971 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:36,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:37,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:37,013 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:37,103 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:37,104 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-12 02:17:37,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:37,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:37,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-12 02:17:37,163 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:17:37,163 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: [] [2023-11-12 02:17:37,168 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-12 02:17:37,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,173 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-12 02:17:37,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:37,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:37,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:17:37,201 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: [] [2023-11-12 02:17:37,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:37,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-12 02:17:37,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:37,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:37,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:37,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,326 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-12 02:17:37,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-12 02:17:37,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:37,385 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-12 02:17:37,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:37,389 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:37,390 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:37,390 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:37,390 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:37,390 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-12 02:17:37,390 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,390 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:37,390 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:37,391 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2023-11-12 02:17:37,391 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:37,391 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:37,393 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:37,398 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:37,423 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:37,521 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:37,528 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-12 02:17:37,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,534 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,545 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 [2023-11-12 02:17:37,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-12 02:17:37,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:37,563 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:37,563 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:37,563 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:37,576 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-12 02:17:37,581 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-12 02:17:37,607 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:17:37,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-12 02:17:37,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-12 02:17:37,618 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 [2023-11-12 02:17:37,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:37,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:37,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:37,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:37,639 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-12 02:17:37,639 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-12 02:17:37,675 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:17:37,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:37,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,691 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,703 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 [2023-11-12 02:17:37,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-12 02:17:37,720 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:37,720 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:17:37,721 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:37,721 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:37,721 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:37,724 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:17:37,724 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:17:37,736 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-12 02:17:37,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-12 02:17:37,741 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-12 02:17:37,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:37,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:37,782 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:37,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-12 02:17:37,785 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-12 02:17:37,786 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-12 02:17:37,786 INFO L513 LassoAnalysis]: Proved termination. [2023-11-12 02:17:37,786 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 [] [2023-11-12 02:17:37,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-12 02:17:37,794 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-12 02:17:37,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:37,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:37,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:37,866 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:37,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:37,919 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 [2023-11-12 02:17:37,922 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) [2023-11-12 02:17:37,976 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. [2023-11-12 02:17:37,979 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 [2023-11-12 02:17:37,986 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) [2023-11-12 02:17:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-12 02:17:37,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-12 02:17:37,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:37,990 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-12 02:17:37,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:37,991 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-12 02:17:37,991 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:37,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2023-11-12 02:17:37,995 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-12 02:17:38,000 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2023-11-12 02:17:38,002 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-12 02:17:38,002 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-12 02:17:38,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-11-12 02:17:38,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:38,004 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-12 02:17:38,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-11-12 02:17:38,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-12 02:17:38,046 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) [2023-11-12 02:17:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-11-12 02:17:38,049 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-12 02:17:38,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:38,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:38,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:38,055 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) [2023-11-12 02:17:38,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:38,072 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2023-11-12 02:17:38,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2023-11-12 02:17:38,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-12 02:17:38,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 7 transitions. [2023-11-12 02:17:38,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-12 02:17:38,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-12 02:17:38,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2023-11-12 02:17:38,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:38,074 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-12 02:17:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2023-11-12 02:17:38,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-12 02:17:38,076 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) [2023-11-12 02:17:38,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2023-11-12 02:17:38,077 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-12 02:17:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:38,081 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-12 02:17:38,081 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-12 02:17:38,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2023-11-12 02:17:38,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-12 02:17:38,083 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:38,083 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:38,083 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-12 02:17:38,083 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-12 02:17:38,084 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 [2023-11-12 02:17:38,084 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 [2023-11-12 02:17:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-12 02:17:38,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:38,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278619081] [2023-11-12 02:17:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:38,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:38,099 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:38,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:38,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2023-11-12 02:17:38,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:38,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165423062] [2023-11-12 02:17:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:38,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:38,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:38,112 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:38,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:38,113 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2023-11-12 02:17:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:38,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370805378] [2023-11-12 02:17:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:38,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370805378] [2023-11-12 02:17:38,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370805378] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:38,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497626325] [2023-11-12 02:17:38,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:38,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:38,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:38,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:38,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:17:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:38,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:17:38,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:38,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:38,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497626325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:38,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:38,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-12 02:17:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131530824] [2023-11-12 02:17:38,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:38,351 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:38,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:38,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:38,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:38,352 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-12 02:17:38,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:38,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:38,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:38,352 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2023-11-12 02:17:38,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:38,353 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:38,355 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:38,360 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:38,370 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:38,418 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:38,418 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-12 02:17:38,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:38,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:38,423 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:38,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:38,433 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:38,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-12 02:17:38,464 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:17:38,464 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: [] [2023-11-12 02:17:38,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:38,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:38,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:38,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:38,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:38,491 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:38,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-12 02:17:38,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:38,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:38,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:38,530 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:38,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-12 02:17:38,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:38,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-12 02:17:38,567 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-12 02:17:38,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:38,578 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:38,578 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:38,579 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:38,579 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:38,579 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-12 02:17:38,579 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:38,579 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:38,579 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:38,580 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2023-11-12 02:17:38,580 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:38,580 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:38,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:38,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:38,602 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:38,661 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:38,661 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-12 02:17:38,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:38,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:38,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:38,677 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 [2023-11-12 02:17:38,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-12 02:17:38,693 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:38,693 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:38,693 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:38,693 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:38,698 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-12 02:17:38,698 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-12 02:17:38,712 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:17:38,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:38,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:38,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:38,726 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:38,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-12 02:17:38,739 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-12 02:17:38,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:38,755 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:17:38,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:38,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:38,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:38,761 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:17:38,761 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:17:38,777 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-12 02:17:38,791 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-12 02:17:38,791 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-12 02:17:38,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:38,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:38,798 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:38,807 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-12 02:17:38,807 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-12 02:17:38,807 INFO L513 LassoAnalysis]: Proved termination. [2023-11-12 02:17:38,807 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 [] [2023-11-12 02:17:38,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-12 02:17:38,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:38,820 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-12 02:17:38,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:38,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:38,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:38,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:38,880 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:38,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:38,885 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 [2023-11-12 02:17:38,885 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) [2023-11-12 02:17:38,898 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. [2023-11-12 02:17:38,899 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 [2023-11-12 02:17:38,900 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) [2023-11-12 02:17:38,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-12 02:17:38,901 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-12 02:17:38,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:38,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2023-11-12 02:17:38,902 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:38,902 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2023-11-12 02:17:38,903 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:38,903 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2023-11-12 02:17:38,904 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-12 02:17:38,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 13 transitions. [2023-11-12 02:17:38,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-12 02:17:38,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-12 02:17:38,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2023-11-12 02:17:38,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:38,909 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-12 02:17:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2023-11-12 02:17:38,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-12 02:17:38,910 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) [2023-11-12 02:17:38,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2023-11-12 02:17:38,911 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-12 02:17:38,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:17:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:38,912 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) [2023-11-12 02:17:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:38,942 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-11-12 02:17:38,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2023-11-12 02:17:38,943 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-12 02:17:38,944 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 13 transitions. [2023-11-12 02:17:38,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-12 02:17:38,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-12 02:17:38,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2023-11-12 02:17:38,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:38,945 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-12 02:17:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2023-11-12 02:17:38,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-12 02:17:38,947 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) [2023-11-12 02:17:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-12 02:17:38,948 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-12 02:17:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:38,950 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-12 02:17:38,950 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-12 02:17:38,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2023-11-12 02:17:38,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-12 02:17:38,952 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:38,952 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:38,952 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1] [2023-11-12 02:17:38,953 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-12 02:17:38,953 INFO L748 eck$LassoCheckResult]: Stem: 192#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 193#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 194#L10-2 assume !!(main_~i~0#1 < 100); 191#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 189#L10-2 assume !!(main_~i~0#1 < 100); 190#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 200#L10-2 assume !!(main_~i~0#1 < 100); 199#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 198#L10-2 assume !!(main_~i~0#1 < 100); 197#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 196#L10-2 [2023-11-12 02:17:38,953 INFO L750 eck$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 [2023-11-12 02:17:38,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash 742492623, now seen corresponding path program 2 times [2023-11-12 02:17:38,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:38,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567349618] [2023-11-12 02:17:38,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:38,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:38,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:38,995 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:38,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:38,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2023-11-12 02:17:38,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:38,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690924197] [2023-11-12 02:17:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:39,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:39,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:39,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:39,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash 570839924, now seen corresponding path program 2 times [2023-11-12 02:17:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:39,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202776348] [2023-11-12 02:17:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:39,180 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:39,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:39,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202776348] [2023-11-12 02:17:39,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202776348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:39,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776368280] [2023-11-12 02:17:39,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:17:39,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:39,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:39,184 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:39,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-12 02:17:39,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:17:39,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:17:39,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:17:39,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:39,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:39,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776368280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:39,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:39,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-12 02:17:39,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610918646] [2023-11-12 02:17:39,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:39,412 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:39,413 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:39,413 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:39,413 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:39,413 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-12 02:17:39,413 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:39,414 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:39,414 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:39,414 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2023-11-12 02:17:39,414 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:39,414 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:39,416 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:39,425 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:39,430 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:39,480 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:39,480 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-12 02:17:39,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:39,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:39,485 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:39,493 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:39,493 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:39,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-12 02:17:39,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:39,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:39,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:39,523 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:39,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-12 02:17:39,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-12 02:17:39,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:39,561 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-12 02:17:39,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:39,571 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:39,571 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:39,571 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:39,571 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:39,571 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-12 02:17:39,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:39,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:39,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:39,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2023-11-12 02:17:39,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:39,572 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:39,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:39,590 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:39,595 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:39,650 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:39,651 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-12 02:17:39,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:39,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:39,653 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:39,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-12 02:17:39,703 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 [2023-11-12 02:17:39,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:39,717 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:17:39,717 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:39,717 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:39,717 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:39,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:17:39,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:17:39,737 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-12 02:17:39,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-12 02:17:39,741 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-12 02:17:39,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:39,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:39,749 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:39,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-12 02:17:39,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-12 02:17:39,755 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-12 02:17:39,755 INFO L513 LassoAnalysis]: Proved termination. [2023-11-12 02:17:39,755 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 [] [2023-11-12 02:17:39,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:39,760 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-12 02:17:39,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:39,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:39,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:39,819 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:39,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:39,829 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 [2023-11-12 02:17:39,829 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) [2023-11-12 02:17:39,841 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. [2023-11-12 02:17:39,858 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 [2023-11-12 02:17:39,859 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) [2023-11-12 02:17:39,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-12 02:17:39,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-12 02:17:39,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:39,859 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-12 02:17:39,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:39,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:39,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:39,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:39,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:39,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:39,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:39,955 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:39,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:39,959 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 [2023-11-12 02:17:39,959 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) [2023-11-12 02:17:39,967 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. [2023-11-12 02:17:39,968 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 [2023-11-12 02:17:39,969 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) [2023-11-12 02:17:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-12 02:17:39,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-12 02:17:39,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:39,970 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-12 02:17:39,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:40,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:40,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:40,032 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:40,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:40,042 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 [2023-11-12 02:17:40,042 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) [2023-11-12 02:17:40,061 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. [2023-11-12 02:17:40,061 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 [2023-11-12 02:17:40,064 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) [2023-11-12 02:17:40,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2023-11-12 02:17:40,065 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-12 02:17:40,066 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:40,066 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 12 letters. Loop has 2 letters. [2023-11-12 02:17:40,067 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:40,067 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-12 02:17:40,068 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:40,068 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2023-11-12 02:17:40,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-12 02:17:40,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 16 transitions. [2023-11-12 02:17:40,076 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-12 02:17:40,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-12 02:17:40,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2023-11-12 02:17:40,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:40,077 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-11-12 02:17:40,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2023-11-12 02:17:40,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-11-12 02:17:40,079 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) [2023-11-12 02:17:40,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-12 02:17:40,080 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-12 02:17:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-12 02:17:40,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:17:40,084 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) [2023-11-12 02:17:40,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:40,158 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-11-12 02:17:40,158 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 34 transitions. [2023-11-12 02:17:40,165 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-12 02:17:40,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 28 transitions. [2023-11-12 02:17:40,166 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2023-11-12 02:17:40,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2023-11-12 02:17:40,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 28 transitions. [2023-11-12 02:17:40,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:40,167 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-12 02:17:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 28 transitions. [2023-11-12 02:17:40,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-11-12 02:17:40,171 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) [2023-11-12 02:17:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-12 02:17:40,172 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-12 02:17:40,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:17:40,173 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-12 02:17:40,173 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-12 02:17:40,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2023-11-12 02:17:40,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-12 02:17:40,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:40,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:40,182 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 1, 1] [2023-11-12 02:17:40,183 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-12 02:17:40,183 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 [2023-11-12 02:17:40,184 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 [2023-11-12 02:17:40,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash -926509747, now seen corresponding path program 3 times [2023-11-12 02:17:40,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:40,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161496760] [2023-11-12 02:17:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:40,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:40,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:40,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:40,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2023-11-12 02:17:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:40,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96328544] [2023-11-12 02:17:40,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:40,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:40,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:40,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:40,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1317636150, now seen corresponding path program 4 times [2023-11-12 02:17:40,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:40,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475737880] [2023-11-12 02:17:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:40,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:40,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:40,291 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:40,323 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:40,323 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:40,324 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:40,324 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:40,324 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-12 02:17:40,324 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:40,324 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:40,324 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:40,325 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2023-11-12 02:17:40,325 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:40,325 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:40,326 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:40,331 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:40,339 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:40,382 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:40,382 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-12 02:17:40,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:40,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:40,384 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:40,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-12 02:17:40,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:40,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:40,427 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:17:40,427 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: [] [2023-11-12 02:17:40,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:40,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:40,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:40,434 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:40,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-12 02:17:40,449 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:40,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:40,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:40,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:40,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:40,483 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:40,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-12 02:17:40,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:40,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-12 02:17:40,529 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-12 02:17:40,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:40,537 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:40,537 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:40,537 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:40,538 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:40,538 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-12 02:17:40,538 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:40,538 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:40,538 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:40,538 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2023-11-12 02:17:40,538 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:40,538 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:40,539 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:40,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:40,561 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:40,621 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:40,621 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-12 02:17:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:40,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:40,623 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:40,628 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 [2023-11-12 02:17:40,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-12 02:17:40,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:40,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:17:40,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:40,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:40,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:40,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:17:40,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:17:40,665 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-12 02:17:40,679 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-12 02:17:40,679 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-12 02:17:40,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:40,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:40,683 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:40,692 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-12 02:17:40,692 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-12 02:17:40,692 INFO L513 LassoAnalysis]: Proved termination. [2023-11-12 02:17:40,692 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 [] [2023-11-12 02:17:40,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-12 02:17:40,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:40,707 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-12 02:17:40,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:40,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:40,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:40,788 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:40,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:40,812 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 [2023-11-12 02:17:40,813 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) [2023-11-12 02:17:40,830 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. [2023-11-12 02:17:40,831 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 [2023-11-12 02:17:40,832 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) [2023-11-12 02:17:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-12 02:17:40,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 21 letters. Loop has 2 letters. [2023-11-12 02:17:40,833 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:40,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 23 letters. Loop has 2 letters. [2023-11-12 02:17:40,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:40,834 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 21 letters. Loop has 4 letters. [2023-11-12 02:17:40,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:40,835 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 42 transitions. [2023-11-12 02:17:40,838 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-12 02:17:40,839 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 28 states and 31 transitions. [2023-11-12 02:17:40,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-12 02:17:40,839 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-12 02:17:40,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 31 transitions. [2023-11-12 02:17:40,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:40,840 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-12 02:17:40,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 31 transitions. [2023-11-12 02:17:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-11-12 02:17:40,843 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) [2023-11-12 02:17:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-11-12 02:17:40,844 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-12 02:17:40,844 INFO L428 stractBuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-12 02:17:40,844 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-12 02:17:40,844 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2023-11-12 02:17:40,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-12 02:17:40,845 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:40,845 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:40,846 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 1, 1, 1] [2023-11-12 02:17:40,846 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-12 02:17:40,846 INFO L748 eck$LassoCheckResult]: Stem: 659#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 660#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 661#L10-2 assume !!(main_~i~0#1 < 100); 656#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 657#L10-2 assume !!(main_~i~0#1 < 100); 658#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 654#L10-2 assume !!(main_~i~0#1 < 100); 655#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 677#L10-2 assume !!(main_~i~0#1 < 100); 676#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 675#L10-2 assume !!(main_~i~0#1 < 100); 674#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 673#L10-2 assume !!(main_~i~0#1 < 100); 672#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 671#L10-2 assume !!(main_~i~0#1 < 100); 670#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 669#L10-2 assume !!(main_~i~0#1 < 100); 668#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 667#L10-2 assume !!(main_~i~0#1 < 100); 666#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 665#L10-2 assume !!(main_~i~0#1 < 100); 664#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 663#L10-2 assume !!(main_~i~0#1 < 100); 652#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 662#L10-2 assume !!(main_~i~0#1 < 100); 653#L10 [2023-11-12 02:17:40,846 INFO L750 eck$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 [2023-11-12 02:17:40,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:40,847 INFO L85 PathProgramCache]: Analyzing trace with hash 767012677, now seen corresponding path program 3 times [2023-11-12 02:17:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:40,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897745242] [2023-11-12 02:17:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897745242] [2023-11-12 02:17:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897745242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95733602] [2023-11-12 02:17:41,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:17:41,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:41,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,114 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-12 02:17:41,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-12 02:17:41,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:17:41,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:17:41,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:41,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:41,481 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:41,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95733602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:41,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:41,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2023-11-12 02:17:41,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250040454] [2023-11-12 02:17:41,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:41,484 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-12 02:17:41,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2023-11-12 02:17:41,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:41,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469471875] [2023-11-12 02:17:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:41,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:41,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:41,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:41,515 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:41,515 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:41,515 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:41,516 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:41,516 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-12 02:17:41,516 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,516 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:41,516 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:41,516 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration5_Loop [2023-11-12 02:17:41,516 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:41,516 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:41,517 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:41,523 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:41,527 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:41,566 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:41,566 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-12 02:17:41,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,567 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-12 02:17:41,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:41,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:41,598 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:17:41,598 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: [] [2023-11-12 02:17:41,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:41,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,608 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,614 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:41,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:41,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-12 02:17:41,638 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-12 02:17:41,638 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: [] [2023-11-12 02:17:41,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:41,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,649 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-12 02:17:41,653 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:41,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-12 02:17:41,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-12 02:17:41,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,670 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-12 02:17:41,673 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-12 02:17:41,673 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-12 02:17:41,698 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-12 02:17:41,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:41,706 INFO L210 LassoAnalysis]: Preferences: [2023-11-12 02:17:41,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-12 02:17:41,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-12 02:17:41,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-12 02:17:41,707 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-12 02:17:41,707 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,707 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-12 02:17:41,707 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-12 02:17:41,707 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration5_Loop [2023-11-12 02:17:41,707 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-12 02:17:41,707 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-12 02:17:41,708 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:41,712 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:41,715 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-12 02:17:41,755 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-12 02:17:41,755 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-12 02:17:41,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,756 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,766 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 [2023-11-12 02:17:41,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:41,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:41,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:41,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:41,781 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-12 02:17:41,781 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-12 02:17:41,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-12 02:17:41,801 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:17:41,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:41,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,811 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,821 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 [2023-11-12 02:17:41,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-12 02:17:41,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:41,834 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:41,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:41,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:41,836 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-12 02:17:41,836 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-12 02:17:41,853 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-12 02:17:41,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:41,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,863 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,867 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 [2023-11-12 02:17:41,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-12 02:17:41,879 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-12 02:17:41,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-12 02:17:41,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-12 02:17:41,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-12 02:17:41,881 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-12 02:17:41,881 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-12 02:17:41,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-12 02:17:41,901 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-12 02:17:41,904 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-12 02:17:41,904 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-12 02:17:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:17:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:41,906 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:17:41,910 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-12 02:17:41,910 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-12 02:17:41,910 INFO L513 LassoAnalysis]: Proved termination. [2023-11-12 02:17:41,910 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 [] [2023-11-12 02:17:41,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-12 02:17:41,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:41,915 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-12 02:17:41,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:41,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:41,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:41,993 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:41,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:42,013 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 [2023-11-12 02:17:42,014 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) [2023-11-12 02:17:42,025 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. [2023-11-12 02:17:42,026 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 [2023-11-12 02:17:42,026 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) [2023-11-12 02:17:42,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-12 02:17:42,027 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-12 02:17:42,029 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:42,029 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-12 02:17:42,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:42,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:42,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:42,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:42,092 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:42,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:42,110 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 [2023-11-12 02:17:42,110 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) [2023-11-12 02:17:42,130 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. [2023-11-12 02:17:42,130 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 [2023-11-12 02:17:42,131 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) [2023-11-12 02:17:42,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-12 02:17:42,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-12 02:17:42,131 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:42,132 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-12 02:17:42,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:42,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 02:17:42,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:42,203 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:17:42,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:42,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:42,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:42,234 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 [2023-11-12 02:17:42,234 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) [2023-11-12 02:17:42,250 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. [2023-11-12 02:17:42,250 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 [2023-11-12 02:17:42,253 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) [2023-11-12 02:17:42,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-11-12 02:17:42,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-12 02:17:42,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:42,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 27 letters. Loop has 2 letters. [2023-11-12 02:17:42,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:42,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 25 letters. Loop has 4 letters. [2023-11-12 02:17:42,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-12 02:17:42,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2023-11-12 02:17:42,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-12 02:17:42,264 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 29 states and 32 transitions. [2023-11-12 02:17:42,264 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-12 02:17:42,264 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-12 02:17:42,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 32 transitions. [2023-11-12 02:17:42,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:42,264 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-12 02:17:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 32 transitions. [2023-11-12 02:17:42,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2023-11-12 02:17:42,270 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) [2023-11-12 02:17:42,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-11-12 02:17:42,270 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-12 02:17:42,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-12 02:17:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-12 02:17:42,272 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) [2023-11-12 02:17:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:42,359 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2023-11-12 02:17:42,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 65 transitions. [2023-11-12 02:17:42,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-12 02:17:42,361 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 51 states and 53 transitions. [2023-11-12 02:17:42,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-12 02:17:42,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-12 02:17:42,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 53 transitions. [2023-11-12 02:17:42,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:42,362 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 53 transitions. [2023-11-12 02:17:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 53 transitions. [2023-11-12 02:17:42,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-12 02:17:42,365 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) [2023-11-12 02:17:42,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-11-12 02:17:42,366 INFO L240 hiAutomatonCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-11-12 02:17:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-12 02:17:42,367 INFO L428 stractBuchiCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-11-12 02:17:42,367 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-12 02:17:42,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 52 transitions. [2023-11-12 02:17:42,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-12 02:17:42,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:42,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:42,370 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [24, 22, 1, 1, 1] [2023-11-12 02:17:42,370 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-12 02:17:42,371 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 [2023-11-12 02:17:42,371 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 [2023-11-12 02:17:42,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:42,371 INFO L85 PathProgramCache]: Analyzing trace with hash -694298463, now seen corresponding path program 4 times [2023-11-12 02:17:42,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:42,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359258510] [2023-11-12 02:17:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:42,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:43,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:43,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359258510] [2023-11-12 02:17:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359258510] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898989426] [2023-11-12 02:17:43,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 02:17:43,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:43,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:43,030 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:43,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-12 02:17:43,103 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 02:17:43,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:17:43,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 02:17:43,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:43,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:44,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898989426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:44,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:44,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2023-11-12 02:17:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057000861] [2023-11-12 02:17:44,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:44,351 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-12 02:17:44,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 1 times [2023-11-12 02:17:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:44,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384313433] [2023-11-12 02:17:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:44,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:44,358 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:44,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:44,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-12 02:17:44,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-12 02:17:44,400 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) [2023-11-12 02:17:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:44,624 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2023-11-12 02:17:44,624 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 125 transitions. [2023-11-12 02:17:44,627 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-12 02:17:44,629 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 99 states and 101 transitions. [2023-11-12 02:17:44,629 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-12 02:17:44,629 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-12 02:17:44,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 101 transitions. [2023-11-12 02:17:44,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:44,630 INFO L218 hiAutomatonCegarLoop]: Abstraction has 99 states and 101 transitions. [2023-11-12 02:17:44,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 101 transitions. [2023-11-12 02:17:44,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2023-11-12 02:17:44,645 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) [2023-11-12 02:17:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2023-11-12 02:17:44,647 INFO L240 hiAutomatonCegarLoop]: Abstraction has 98 states and 100 transitions. [2023-11-12 02:17:44,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-12 02:17:44,649 INFO L428 stractBuchiCegarLoop]: Abstraction has 98 states and 100 transitions. [2023-11-12 02:17:44,649 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-12 02:17:44,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 100 transitions. [2023-11-12 02:17:44,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-12 02:17:44,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:44,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:44,657 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [48, 46, 1, 1, 1] [2023-11-12 02:17:44,657 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-12 02:17:44,658 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 [2023-11-12 02:17:44,659 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 [2023-11-12 02:17:44,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:44,660 INFO L85 PathProgramCache]: Analyzing trace with hash -818401447, now seen corresponding path program 5 times [2023-11-12 02:17:44,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:44,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401784171] [2023-11-12 02:17:44,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:44,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:46,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401784171] [2023-11-12 02:17:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401784171] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:46,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835504094] [2023-11-12 02:17:46,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-12 02:17:46,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:46,950 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:46,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-12 02:17:47,050 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2023-11-12 02:17:47,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:17:47,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-12 02:17:47,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:47,295 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:47,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:48,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:48,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835504094] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:48,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:48,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2023-11-12 02:17:48,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065216281] [2023-11-12 02:17:48,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:48,921 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-12 02:17:48,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 2 times [2023-11-12 02:17:48,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:48,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435890033] [2023-11-12 02:17:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:48,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:48,926 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:48,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:48,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-12 02:17:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2023-11-12 02:17:48,961 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) [2023-11-12 02:17:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:49,139 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2023-11-12 02:17:49,140 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 113 transitions. [2023-11-12 02:17:49,142 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-12 02:17:49,147 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 107 states and 109 transitions. [2023-11-12 02:17:49,147 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-12 02:17:49,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-12 02:17:49,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 109 transitions. [2023-11-12 02:17:49,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-12 02:17:49,148 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 109 transitions. [2023-11-12 02:17:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 109 transitions. [2023-11-12 02:17:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2023-11-12 02:17:49,154 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) [2023-11-12 02:17:49,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2023-11-12 02:17:49,155 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 108 transitions. [2023-11-12 02:17:49,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-12 02:17:49,156 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 108 transitions. [2023-11-12 02:17:49,156 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-12 02:17:49,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 108 transitions. [2023-11-12 02:17:49,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-12 02:17:49,157 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:17:49,157 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:17:49,159 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [52, 50, 1, 1, 1] [2023-11-12 02:17:49,159 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-12 02:17:49,160 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 [2023-11-12 02:17:49,160 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 [2023-11-12 02:17:49,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:49,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1468745677, now seen corresponding path program 6 times [2023-11-12 02:17:49,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:49,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163111982] [2023-11-12 02:17:49,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:49,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:49,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:49,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:49,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 3 times [2023-11-12 02:17:49,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:49,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398574969] [2023-11-12 02:17:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:49,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:49,210 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:49,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:49,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1914756667, now seen corresponding path program 7 times [2023-11-12 02:17:49,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:49,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988538161] [2023-11-12 02:17:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:49,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:49,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:49,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:17:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:51,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:17:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:17:51,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 02:17:51 BoogieIcfgContainer [2023-11-12 02:17:51,393 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-12 02:17:51,394 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:17:51,394 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:17:51,394 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:17:51,395 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:17:36" (3/4) ... [2023-11-12 02:17:51,397 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-12 02:17:51,494 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:17:51,495 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:17:51,496 INFO L158 Benchmark]: Toolchain (without parser) took 15591.72ms. Allocated memory was 146.8MB in the beginning and 239.1MB in the end (delta: 92.3MB). Free memory was 99.2MB in the beginning and 178.2MB in the end (delta: -79.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2023-11-12 02:17:51,496 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 146.8MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:17:51,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.27ms. Allocated memory is still 146.8MB. Free memory was 98.6MB in the beginning and 89.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:17:51,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.60ms. Allocated memory is still 146.8MB. Free memory was 89.5MB in the beginning and 88.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:17:51,497 INFO L158 Benchmark]: Boogie Preprocessor took 24.31ms. Allocated memory is still 146.8MB. Free memory was 88.1MB in the beginning and 87.6MB in the end (delta: 553.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:17:51,498 INFO L158 Benchmark]: RCFGBuilder took 235.57ms. Allocated memory is still 146.8MB. Free memory was 87.0MB in the beginning and 79.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-12 02:17:51,498 INFO L158 Benchmark]: BuchiAutomizer took 14989.65ms. Allocated memory was 146.8MB in the beginning and 239.1MB in the end (delta: 92.3MB). Free memory was 78.6MB in the beginning and 182.4MB in the end (delta: -103.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:17:51,499 INFO L158 Benchmark]: Witness Printer took 100.92ms. Allocated memory is still 239.1MB. Free memory was 182.4MB in the beginning and 178.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-12 02:17:51,501 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 146.8MB. Free memory is still 115.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.27ms. Allocated memory is still 146.8MB. Free memory was 98.6MB in the beginning and 89.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.60ms. Allocated memory is still 146.8MB. Free memory was 89.5MB in the beginning and 88.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.31ms. Allocated memory is still 146.8MB. Free memory was 88.1MB in the beginning and 87.6MB in the end (delta: 553.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 235.57ms. Allocated memory is still 146.8MB. Free memory was 87.0MB in the beginning and 79.1MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 14989.65ms. Allocated memory was 146.8MB in the beginning and 239.1MB in the end (delta: 92.3MB). Free memory was 78.6MB in the beginning and 182.4MB in the end (delta: -103.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 100.92ms. Allocated memory is still 239.1MB. Free memory was 182.4MB in the beginning and 178.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 14.8s and 8 iterations. TraceHistogramMax:52. Analysis of lassos took 12.8s. 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: 78ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s 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! [2023-11-12 02:17:51,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:51,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-11-12 02:17:51,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-12 02:17:52,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-12 02:17:52,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:52,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_275e5b3c-a4c2-4a26-aa88-e5a95beee987/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)