./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 9bd2c7ff 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_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/NO_22.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu --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-9bd2c7f [2023-11-19 07:56:04,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:04,575 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 07:56:04,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:04,581 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:04,622 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:04,633 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:04,634 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:04,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:04,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:04,640 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:04,641 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:56:04,641 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:56:04,648 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:56:04,649 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:56:04,649 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:56:04,650 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:56:04,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:04,651 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:56:04,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:04,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:04,652 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:56:04,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:56:04,653 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:56:04,653 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:56:04,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:04,654 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:56:04,655 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:04,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:04,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:04,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:04,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:04,657 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:56:04,657 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_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aebec197cf7bd355d2eb5f718c983de149eae8f5ff2da107813d58a220d4744 [2023-11-19 07:56:04,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:04,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:04,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:04,930 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:04,930 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:04,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-restricted-15/NO_22.c [2023-11-19 07:56:08,262 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:08,477 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:08,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/sv-benchmarks/c/termination-restricted-15/NO_22.c [2023-11-19 07:56:08,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/data/4fa98e064/0f58f6ae5a414ed083413d8c8ef52d48/FLAG76c0e0e60 [2023-11-19 07:56:08,503 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/data/4fa98e064/0f58f6ae5a414ed083413d8c8ef52d48 [2023-11-19 07:56:08,507 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:08,509 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:08,510 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:08,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:08,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:08,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21968404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08, skipping insertion in model container [2023-11-19 07:56:08,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,540 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:08,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:08,694 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:08,708 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:08,723 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:08,724 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08 WrapperNode [2023-11-19 07:56:08,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:08,725 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:08,725 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:08,726 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:08,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,751 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2023-11-19 07:56:08,751 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:08,752 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:08,752 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:08,753 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:08,762 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:08,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:08,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:08,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:08,777 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (1/1) ... [2023-11-19 07:56:08,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:08,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:08,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:08,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:08,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:08,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:08,964 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:08,967 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:09,070 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:09,086 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:09,087 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:56:09,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:09 BoogieIcfgContainer [2023-11-19 07:56:09,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:09,092 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:56:09,092 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:56:09,096 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:56:09,097 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:56:09,098 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:56:08" (1/3) ... [2023-11-19 07:56:09,099 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c158ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:56:09, skipping insertion in model container [2023-11-19 07:56:09,099 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:56:09,100 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:08" (2/3) ... [2023-11-19 07:56:09,100 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6c158ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:56:09, skipping insertion in model container [2023-11-19 07:56:09,100 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:56:09,100 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:09" (3/3) ... [2023-11-19 07:56:09,103 INFO L332 chiAutomizerObserver]: Analyzing ICFG NO_22.c [2023-11-19 07:56:09,176 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:56:09,177 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:56:09,177 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:56:09,177 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:56:09,178 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:56:09,178 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:56:09,180 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:56:09,181 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:56:09,185 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) [2023-11-19 07:56:09,240 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 07:56:09,240 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:09,241 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:09,246 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:56:09,247 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:56:09,247 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:56:09,247 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) [2023-11-19 07:56:09,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 07:56:09,250 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:09,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:09,250 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:56:09,251 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:56:09,260 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 3#L10-2true [2023-11-19 07:56:09,260 INFO L750 eck$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 [2023-11-19 07:56:09,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 07:56:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:09,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467966681] [2023-11-19 07:56:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:09,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:09,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:09,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:09,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2023-11-19 07:56:09,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:09,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12690398] [2023-11-19 07:56:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:09,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:09,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:09,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:09,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:09,417 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-11-19 07:56:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809456229] [2023-11-19 07:56:09,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:09,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:09,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:09,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:09,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809456229] [2023-11-19 07:56:09,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809456229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:09,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:09,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263373749] [2023-11-19 07:56:09,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:09,625 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:09,626 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:09,626 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:09,626 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:09,627 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:56:09,627 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:09,627 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:09,627 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:09,627 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2023-11-19 07:56:09,627 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:09,628 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:09,652 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:09,668 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:09,682 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:09,757 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:09,758 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:56:09,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:09,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:09,764 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:09,787 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:09,787 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:09,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:56:09,832 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:56:09,832 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: [] [2023-11-19 07:56:09,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:09,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:09,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:09,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:09,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:09,874 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:09,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:56:09,898 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:56:09,898 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: [] [2023-11-19 07:56:09,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-19 07:56:09,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:09,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:09,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:09,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:56:09,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:09,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:09,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:09,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:09,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:09,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:09,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:56:09,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:56:09,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:09,980 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:56:10,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:10,019 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:10,019 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:10,020 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:10,020 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:10,020 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:56:10,020 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,020 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:10,020 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:10,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration1_Loop [2023-11-19 07:56:10,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:10,021 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:10,023 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:10,036 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:10,041 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:10,095 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:10,100 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:56:10,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:56:10,110 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 [2023-11-19 07:56:10,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:10,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:10,125 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:10,125 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:10,131 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:56:10,131 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:56:10,165 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:56:10,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:10,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,187 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,193 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 [2023-11-19 07:56:10,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:10,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:10,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:10,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:10,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:56:10,217 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:56:10,218 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:56:10,236 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:56:10,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:10,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,259 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,265 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 [2023-11-19 07:56:10,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:10,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:56:10,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:10,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:10,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:10,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:56:10,283 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:56:10,283 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:56:10,295 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:56:10,303 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:56:10,303 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:56:10,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,348 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:56:10,349 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:56:10,349 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:56:10,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:56:10,350 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 [] [2023-11-19 07:56:10,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:10,370 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:56:10,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:10,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:10,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:10,428 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:10,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:10,476 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 [2023-11-19 07:56:10,479 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) [2023-11-19 07:56:10,521 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. [2023-11-19 07:56:10,524 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 [2023-11-19 07:56:10,529 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) [2023-11-19 07:56:10,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-19 07:56:10,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-19 07:56:10,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:10,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-19 07:56:10,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:10,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-19 07:56:10,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:10,534 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 28 transitions. [2023-11-19 07:56:10,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 07:56:10,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 8 states and 11 transitions. [2023-11-19 07:56:10,542 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-19 07:56:10,543 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-19 07:56:10,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-11-19 07:56:10,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:10,544 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-19 07:56:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-11-19 07:56:10,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-11-19 07:56:10,570 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) [2023-11-19 07:56:10,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2023-11-19 07:56:10,572 INFO L240 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-19 07:56:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:10,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:10,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:10,577 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) [2023-11-19 07:56:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:10,588 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2023-11-19 07:56:10,588 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2023-11-19 07:56:10,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 07:56:10,589 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 7 transitions. [2023-11-19 07:56:10,590 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-19 07:56:10,590 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-19 07:56:10,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2023-11-19 07:56:10,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:10,590 INFO L218 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-19 07:56:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2023-11-19 07:56:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2023-11-19 07:56:10,591 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) [2023-11-19 07:56:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2023-11-19 07:56:10,592 INFO L240 hiAutomatonCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-19 07:56:10,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:10,593 INFO L428 stractBuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2023-11-19 07:56:10,593 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:56:10,593 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2023-11-19 07:56:10,594 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 07:56:10,594 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:10,594 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:10,594 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 07:56:10,595 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:56:10,595 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 [2023-11-19 07:56:10,595 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 [2023-11-19 07:56:10,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-19 07:56:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:10,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222219482] [2023-11-19 07:56:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:10,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:10,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:10,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:10,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 2 times [2023-11-19 07:56:10,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:10,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104478978] [2023-11-19 07:56:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:10,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:10,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:10,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:10,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash 889692235, now seen corresponding path program 1 times [2023-11-19 07:56:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:10,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931673163] [2023-11-19 07:56:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:10,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931673163] [2023-11-19 07:56:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931673163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:10,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352276611] [2023-11-19 07:56:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:10,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:10,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,669 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:56:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:10,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:56:10,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:10,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:10,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352276611] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:10,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:10,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-19 07:56:10,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297581904] [2023-11-19 07:56:10,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:10,791 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:10,791 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:10,791 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:10,792 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:10,792 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:56:10,792 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,792 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:10,792 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:10,792 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2023-11-19 07:56:10,792 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:10,792 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:10,794 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:10,798 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:10,808 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:10,852 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:10,852 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:56:10,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,858 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:10,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:10,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:56:10,896 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:56:10,896 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: [] [2023-11-19 07:56:10,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:10,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,922 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:10,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:10,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:56:10,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:10,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:10,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:56:10,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:56:11,000 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:11,025 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:56:11,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:11,057 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:11,057 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:11,058 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:11,058 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:11,058 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:56:11,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:11,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:11,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:11,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration2_Loop [2023-11-19 07:56:11,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:11,058 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:11,060 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:11,068 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:11,083 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:11,162 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:11,162 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:56:11,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:11,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:11,164 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:11,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:11,174 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 [2023-11-19 07:56:11,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:56:11,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:11,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:11,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:11,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:11,194 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:56:11,194 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:56:11,216 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:56:11,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:11,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:11,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:11,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:11,250 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 [2023-11-19 07:56:11,263 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:11,263 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:56:11,263 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:11,263 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:11,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:11,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:56:11,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:56:11,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:56:11,279 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:56:11,284 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:56:11,285 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:56:11,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:11,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:11,288 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:11,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:56:11,292 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:56:11,292 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:56:11,292 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:56:11,292 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 [] [2023-11-19 07:56:11,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:11,318 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:56:11,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:11,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:11,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:11,361 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:11,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:11,367 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 [2023-11-19 07:56:11,368 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) [2023-11-19 07:56:11,387 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. [2023-11-19 07:56:11,388 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 [2023-11-19 07:56:11,390 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) [2023-11-19 07:56:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-19 07:56:11,392 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-19 07:56:11,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:11,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 2 letters. [2023-11-19 07:56:11,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:11,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 4 letters. [2023-11-19 07:56:11,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:11,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2023-11-19 07:56:11,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 07:56:11,406 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 13 transitions. [2023-11-19 07:56:11,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-11-19 07:56:11,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-19 07:56:11,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2023-11-19 07:56:11,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:11,410 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-19 07:56:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2023-11-19 07:56:11,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-19 07:56:11,412 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) [2023-11-19 07:56:11,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2023-11-19 07:56:11,413 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-19 07:56:11,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:11,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:11,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:56:11,415 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) [2023-11-19 07:56:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:11,442 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2023-11-19 07:56:11,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2023-11-19 07:56:11,446 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 07:56:11,447 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 12 states and 13 transitions. [2023-11-19 07:56:11,447 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-19 07:56:11,447 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-19 07:56:11,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2023-11-19 07:56:11,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:11,448 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-19 07:56:11,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2023-11-19 07:56:11,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-11-19 07:56:11,451 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) [2023-11-19 07:56:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-11-19 07:56:11,452 INFO L240 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-19 07:56:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:11,455 INFO L428 stractBuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-11-19 07:56:11,455 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:56:11,455 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2023-11-19 07:56:11,459 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-11-19 07:56:11,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:11,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:11,460 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 1, 1] [2023-11-19 07:56:11,460 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:56:11,461 INFO L748 eck$LassoCheckResult]: Stem: 192#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 193#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 194#L10-2 assume !!(main_~i~0#1 < 100); 191#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 189#L10-2 assume !!(main_~i~0#1 < 100); 190#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 200#L10-2 assume !!(main_~i~0#1 < 100); 199#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 198#L10-2 assume !!(main_~i~0#1 < 100); 197#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 196#L10-2 [2023-11-19 07:56:11,461 INFO L750 eck$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 [2023-11-19 07:56:11,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:11,461 INFO L85 PathProgramCache]: Analyzing trace with hash 742492623, now seen corresponding path program 2 times [2023-11-19 07:56:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355370100] [2023-11-19 07:56:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:11,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:11,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:11,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 3 times [2023-11-19 07:56:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:11,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698604987] [2023-11-19 07:56:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:11,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:11,526 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:11,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:11,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash 570839924, now seen corresponding path program 2 times [2023-11-19 07:56:11,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:11,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135506347] [2023-11-19 07:56:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:11,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:11,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135506347] [2023-11-19 07:56:11,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135506347] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:11,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402537113] [2023-11-19 07:56:11,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:56:11,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:11,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:11,668 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:11,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:56:11,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:56:11,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:56:11,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:56:11,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:11,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:11,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402537113] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:11,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:11,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-11-19 07:56:11,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024810553] [2023-11-19 07:56:11,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:11,858 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:11,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:11,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:11,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:11,858 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:56:11,859 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:11,859 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:11,859 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:11,859 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2023-11-19 07:56:11,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:11,859 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:11,861 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:11,869 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:11,872 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:11,909 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:11,909 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:56:11,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:11,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:11,911 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:11,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:11,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:11,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 07:56:11,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:11,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:11,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:11,959 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:11,961 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:56:11,961 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:11,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:56:11,993 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:56:12,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:12,012 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:12,012 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:12,012 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:12,013 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:12,013 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:56:12,013 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,013 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:12,013 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:12,013 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration3_Loop [2023-11-19 07:56:12,013 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:12,013 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:12,015 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,028 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,034 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,077 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:12,077 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:56:12,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:12,079 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:12,087 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 [2023-11-19 07:56:12,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:12,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:56:12,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:12,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:12,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:12,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:56:12,102 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:56:12,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:56:12,116 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:56:12,131 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:56:12,131 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:56:12,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:12,134 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:12,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 07:56:12,136 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:56:12,136 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:56:12,136 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:56:12,136 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 [] [2023-11-19 07:56:12,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:12,158 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:56:12,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:12,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,202 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:12,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:12,209 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 [2023-11-19 07:56:12,209 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) [2023-11-19 07:56:12,223 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. [2023-11-19 07:56:12,223 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 [2023-11-19 07:56:12,226 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) [2023-11-19 07:56:12,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-19 07:56:12,227 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-19 07:56:12,228 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:12,228 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:56:12,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:12,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,283 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:12,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:12,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:12,288 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 [2023-11-19 07:56:12,288 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) [2023-11-19 07:56:12,298 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. [2023-11-19 07:56:12,298 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 [2023-11-19 07:56:12,300 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) [2023-11-19 07:56:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-19 07:56:12,301 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-19 07:56:12,301 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:12,302 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:56:12,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:12,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,343 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:12,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:12,351 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 [2023-11-19 07:56:12,351 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) [2023-11-19 07:56:12,364 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. [2023-11-19 07:56:12,365 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 [2023-11-19 07:56:12,368 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) [2023-11-19 07:56:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2023-11-19 07:56:12,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 2 letters. [2023-11-19 07:56:12,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:12,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 12 letters. Loop has 2 letters. [2023-11-19 07:56:12,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:12,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 10 letters. Loop has 4 letters. [2023-11-19 07:56:12,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:12,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 19 transitions. [2023-11-19 07:56:12,376 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-19 07:56:12,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 14 states and 16 transitions. [2023-11-19 07:56:12,378 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-19 07:56:12,378 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-19 07:56:12,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2023-11-19 07:56:12,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:12,379 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 16 transitions. [2023-11-19 07:56:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2023-11-19 07:56:12,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-11-19 07:56:12,380 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) [2023-11-19 07:56:12,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2023-11-19 07:56:12,381 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 15 transitions. [2023-11-19 07:56:12,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:56:12,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:56:12,384 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) [2023-11-19 07:56:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:12,443 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-11-19 07:56:12,443 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 34 transitions. [2023-11-19 07:56:12,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-19 07:56:12,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 28 transitions. [2023-11-19 07:56:12,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2023-11-19 07:56:12,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2023-11-19 07:56:12,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 28 transitions. [2023-11-19 07:56:12,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:12,452 INFO L218 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-19 07:56:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 28 transitions. [2023-11-19 07:56:12,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-11-19 07:56:12,457 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) [2023-11-19 07:56:12,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-11-19 07:56:12,458 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-19 07:56:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:56:12,460 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-11-19 07:56:12,460 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:56:12,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 27 transitions. [2023-11-19 07:56:12,461 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-19 07:56:12,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:12,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:12,462 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 9, 1, 1] [2023-11-19 07:56:12,462 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:56:12,463 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 [2023-11-19 07:56:12,463 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 [2023-11-19 07:56:12,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,464 INFO L85 PathProgramCache]: Analyzing trace with hash -926509747, now seen corresponding path program 3 times [2023-11-19 07:56:12,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:12,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484690910] [2023-11-19 07:56:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:12,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:12,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:12,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 1 times [2023-11-19 07:56:12,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:12,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407055602] [2023-11-19 07:56:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:12,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:12,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:12,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1317636150, now seen corresponding path program 4 times [2023-11-19 07:56:12,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:12,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248125546] [2023-11-19 07:56:12,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:12,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:12,540 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:12,568 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:12,569 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:12,569 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:12,569 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:12,569 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:56:12,569 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,569 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:12,569 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:12,569 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2023-11-19 07:56:12,570 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:12,570 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:12,571 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,575 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,620 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:12,620 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:56:12,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:12,621 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:12,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:12,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:12,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:56:12,661 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:56:12,661 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: [] [2023-11-19 07:56:12,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:12,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:12,687 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:12,700 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:12,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:12,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:56:12,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:12,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:12,754 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:56:12,757 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:56:12,757 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:12,796 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:56:12,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:12,800 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:12,800 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:12,800 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:12,800 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:12,800 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:56:12,800 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,800 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:12,800 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:12,801 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration4_Loop [2023-11-19 07:56:12,801 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:12,801 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:12,802 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,817 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,825 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:12,865 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:12,866 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:56:12,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:12,868 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:12,878 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 [2023-11-19 07:56:12,890 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:12,891 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:56:12,891 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:12,891 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:12,891 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:12,893 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:56:12,893 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:56:12,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:56:12,900 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:56:12,902 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:56:12,902 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:56:12,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:12,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:12,908 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:12,917 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:56:12,917 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:56:12,917 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:56:12,917 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 [] [2023-11-19 07:56:12,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:56:12,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:12,948 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:56:12,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:12,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:13,032 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:13,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:13,055 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 [2023-11-19 07:56:13,056 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) [2023-11-19 07:56:13,069 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. [2023-11-19 07:56:13,072 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 [2023-11-19 07:56:13,072 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) [2023-11-19 07:56:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-19 07:56:13,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 21 letters. Loop has 2 letters. [2023-11-19 07:56:13,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:13,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 23 letters. Loop has 2 letters. [2023-11-19 07:56:13,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:13,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 21 letters. Loop has 4 letters. [2023-11-19 07:56:13,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:13,075 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 42 transitions. [2023-11-19 07:56:13,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-19 07:56:13,078 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 28 states and 31 transitions. [2023-11-19 07:56:13,079 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-19 07:56:13,079 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-19 07:56:13,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 31 transitions. [2023-11-19 07:56:13,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:13,079 INFO L218 hiAutomatonCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-19 07:56:13,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 31 transitions. [2023-11-19 07:56:13,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2023-11-19 07:56:13,083 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) [2023-11-19 07:56:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-11-19 07:56:13,083 INFO L240 hiAutomatonCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-19 07:56:13,084 INFO L428 stractBuchiCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-19 07:56:13,084 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:56:13,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 30 transitions. [2023-11-19 07:56:13,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-19 07:56:13,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:13,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:13,087 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [12, 10, 1, 1, 1] [2023-11-19 07:56:13,088 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:56:13,088 INFO L748 eck$LassoCheckResult]: Stem: 659#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 660#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := 0; 661#L10-2 assume !!(main_~i~0#1 < 100); 656#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 657#L10-2 assume !!(main_~i~0#1 < 100); 658#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 654#L10-2 assume !!(main_~i~0#1 < 100); 655#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 677#L10-2 assume !!(main_~i~0#1 < 100); 676#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 675#L10-2 assume !!(main_~i~0#1 < 100); 674#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 673#L10-2 assume !!(main_~i~0#1 < 100); 672#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 671#L10-2 assume !!(main_~i~0#1 < 100); 670#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 669#L10-2 assume !!(main_~i~0#1 < 100); 668#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 667#L10-2 assume !!(main_~i~0#1 < 100); 666#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 665#L10-2 assume !!(main_~i~0#1 < 100); 664#L10 assume main_~i~0#1 < 50;main_~i~0#1 := 1 + main_~i~0#1; 663#L10-2 assume !!(main_~i~0#1 < 100); 652#L10 assume !(main_~i~0#1 < 50);main_~i~0#1 := main_~i~0#1 - 1; 662#L10-2 assume !!(main_~i~0#1 < 100); 653#L10 [2023-11-19 07:56:13,088 INFO L750 eck$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 [2023-11-19 07:56:13,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash 767012677, now seen corresponding path program 3 times [2023-11-19 07:56:13,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:13,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550930286] [2023-11-19 07:56:13,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:13,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:13,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:13,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:13,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:13,447 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:13,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:13,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550930286] [2023-11-19 07:56:13,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550930286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:13,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456728238] [2023-11-19 07:56:13,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:56:13,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:13,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:13,452 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:13,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-19 07:56:13,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-11-19 07:56:13,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:56:13,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 07:56:13,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:13,550 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:13,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456728238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:13,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:13,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 24 [2023-11-19 07:56:13,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984667541] [2023-11-19 07:56:13,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:13,798 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:56:13,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:13,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1406, now seen corresponding path program 2 times [2023-11-19 07:56:13,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:13,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218771383] [2023-11-19 07:56:13,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:13,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:13,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:13,821 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:13,821 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:13,822 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:13,822 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:13,822 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:56:13,822 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:13,822 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:13,822 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:13,822 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration5_Loop [2023-11-19 07:56:13,822 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:13,823 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:13,824 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:13,827 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:13,830 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:13,862 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:13,862 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:56:13,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:13,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:13,864 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:13,873 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:13,873 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:13,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:56:13,901 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:56:13,901 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: [] [2023-11-19 07:56:13,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:13,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:13,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:13,928 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:13,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:56:13,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:13,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:13,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:56:13,962 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: [] [2023-11-19 07:56:13,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-19 07:56:13,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:13,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:13,988 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:13,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:56:13,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:56:13,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:14,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:14,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:14,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:14,042 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:14,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:56:14,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:56:14,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:56:14,104 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:56:14,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-19 07:56:14,108 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:56:14,108 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:56:14,108 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:56:14,108 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:56:14,108 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:56:14,108 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:14,108 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:56:14,108 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:56:14,108 INFO L133 ssoRankerPreferences]: Filename of dumped script: NO_22.c_Iteration5_Loop [2023-11-19 07:56:14,108 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:56:14,108 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:56:14,109 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:14,124 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:14,127 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:56:14,164 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:56:14,164 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:56:14,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:14,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:14,165 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:14,181 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 [2023-11-19 07:56:14,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:14,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:14,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:14,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:14,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 07:56:14,198 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:56:14,198 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:56:14,218 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:56:14,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:14,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:14,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:14,238 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:14,245 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 [2023-11-19 07:56:14,257 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:14,258 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:14,258 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:14,258 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:14,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 07:56:14,260 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:56:14,260 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:56:14,280 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:56:14,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:14,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:14,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:14,300 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:14,329 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 [2023-11-19 07:56:14,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 07:56:14,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:56:14,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:56:14,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:56:14,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:56:14,343 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:56:14,345 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:56:14,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:56:14,356 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:56:14,360 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:56:14,360 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:56:14,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:56:14,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:14,365 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:14,368 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:56:14,368 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:56:14,368 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:56:14,368 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 [] [2023-11-19 07:56:14,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 07:56:14,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:14,393 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:56:14,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:14,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,479 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:14,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:14,503 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 [2023-11-19 07:56:14,504 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) [2023-11-19 07:56:14,520 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. [2023-11-19 07:56:14,520 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 [2023-11-19 07:56:14,521 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) [2023-11-19 07:56:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-19 07:56:14,522 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-19 07:56:14,524 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:14,524 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:56:14,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:14,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,581 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:14,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:14,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:14,601 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 [2023-11-19 07:56:14,602 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) [2023-11-19 07:56:14,623 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. [2023-11-19 07:56:14,624 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 [2023-11-19 07:56:14,624 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) [2023-11-19 07:56:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2023-11-19 07:56:14,625 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-19 07:56:14,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:14,626 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:56:14,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:56:14,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:14,703 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:14,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:14,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:14,723 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 [2023-11-19 07:56:14,724 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) [2023-11-19 07:56:14,743 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. [2023-11-19 07:56:14,744 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 [2023-11-19 07:56:14,746 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) [2023-11-19 07:56:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-11-19 07:56:14,747 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 25 letters. Loop has 2 letters. [2023-11-19 07:56:14,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:14,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 27 letters. Loop has 2 letters. [2023-11-19 07:56:14,751 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:14,751 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 25 letters. Loop has 4 letters. [2023-11-19 07:56:14,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:56:14,752 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 45 transitions. [2023-11-19 07:56:14,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-19 07:56:14,760 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 29 states and 32 transitions. [2023-11-19 07:56:14,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-19 07:56:14,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-19 07:56:14,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 32 transitions. [2023-11-19 07:56:14,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:14,761 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-11-19 07:56:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 32 transitions. [2023-11-19 07:56:14,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2023-11-19 07:56:14,767 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) [2023-11-19 07:56:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-11-19 07:56:14,768 INFO L240 hiAutomatonCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-11-19 07:56:14,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-19 07:56:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-11-19 07:56:14,773 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) [2023-11-19 07:56:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:14,858 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2023-11-19 07:56:14,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 65 transitions. [2023-11-19 07:56:14,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:56:14,861 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 51 states and 53 transitions. [2023-11-19 07:56:14,861 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-19 07:56:14,862 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-19 07:56:14,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 53 transitions. [2023-11-19 07:56:14,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:14,862 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 53 transitions. [2023-11-19 07:56:14,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 53 transitions. [2023-11-19 07:56:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-19 07:56:14,868 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) [2023-11-19 07:56:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-11-19 07:56:14,871 INFO L240 hiAutomatonCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-11-19 07:56:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:56:14,873 INFO L428 stractBuchiCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-11-19 07:56:14,873 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:56:14,873 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 50 states and 52 transitions. [2023-11-19 07:56:14,874 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:56:14,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:14,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:14,878 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [24, 22, 1, 1, 1] [2023-11-19 07:56:14,879 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-19 07:56:14,879 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 [2023-11-19 07:56:14,880 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 [2023-11-19 07:56:14,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash -694298463, now seen corresponding path program 4 times [2023-11-19 07:56:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:14,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364396972] [2023-11-19 07:56:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:14,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:15,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:15,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:15,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364396972] [2023-11-19 07:56:15,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364396972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:15,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545133448] [2023-11-19 07:56:15,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:56:15,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:15,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:15,663 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:15,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-19 07:56:15,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:56:15,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:56:15,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:56:15,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:15,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 23 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545133448] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:16,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2023-11-19 07:56:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592025200] [2023-11-19 07:56:16,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:16,803 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:56:16,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:16,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 1 times [2023-11-19 07:56:16,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:16,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521698891] [2023-11-19 07:56:16,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:16,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:16,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:16,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-19 07:56:16,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-11-19 07:56:16,851 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) [2023-11-19 07:56:17,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:17,048 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2023-11-19 07:56:17,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 125 transitions. [2023-11-19 07:56:17,053 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:56:17,058 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 99 states and 101 transitions. [2023-11-19 07:56:17,058 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-19 07:56:17,058 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-19 07:56:17,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 101 transitions. [2023-11-19 07:56:17,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:17,058 INFO L218 hiAutomatonCegarLoop]: Abstraction has 99 states and 101 transitions. [2023-11-19 07:56:17,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 101 transitions. [2023-11-19 07:56:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2023-11-19 07:56:17,074 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) [2023-11-19 07:56:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 100 transitions. [2023-11-19 07:56:17,079 INFO L240 hiAutomatonCegarLoop]: Abstraction has 98 states and 100 transitions. [2023-11-19 07:56:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-19 07:56:17,080 INFO L428 stractBuchiCegarLoop]: Abstraction has 98 states and 100 transitions. [2023-11-19 07:56:17,081 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 07:56:17,081 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 100 transitions. [2023-11-19 07:56:17,082 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:56:17,082 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:17,082 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:17,086 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [48, 46, 1, 1, 1] [2023-11-19 07:56:17,086 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-19 07:56:17,086 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 [2023-11-19 07:56:17,088 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 [2023-11-19 07:56:17,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -818401447, now seen corresponding path program 5 times [2023-11-19 07:56:17,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:17,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533003744] [2023-11-19 07:56:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:17,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:19,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533003744] [2023-11-19 07:56:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533003744] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688913753] [2023-11-19 07:56:19,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:56:19,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:19,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:19,214 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:19,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-19 07:56:19,297 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2023-11-19 07:56:19,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:56:19,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-19 07:56:19,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:19,514 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 47 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:20,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688913753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:20,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:20,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 52 [2023-11-19 07:56:20,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288999327] [2023-11-19 07:56:20,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:20,899 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 07:56:20,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:20,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 2 times [2023-11-19 07:56:20,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:20,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685711731] [2023-11-19 07:56:20,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:20,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:20,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:20,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:20,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:20,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-19 07:56:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2023-11-19 07:56:20,938 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) [2023-11-19 07:56:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:21,105 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2023-11-19 07:56:21,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 111 states and 113 transitions. [2023-11-19 07:56:21,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:56:21,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 111 states to 107 states and 109 transitions. [2023-11-19 07:56:21,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-19 07:56:21,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-19 07:56:21,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 109 transitions. [2023-11-19 07:56:21,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:56:21,109 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 109 transitions. [2023-11-19 07:56:21,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 109 transitions. [2023-11-19 07:56:21,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2023-11-19 07:56:21,114 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) [2023-11-19 07:56:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2023-11-19 07:56:21,115 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 108 transitions. [2023-11-19 07:56:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-19 07:56:21,115 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 108 transitions. [2023-11-19 07:56:21,116 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 07:56:21,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 108 transitions. [2023-11-19 07:56:21,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 07:56:21,117 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:56:21,117 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:56:21,119 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [52, 50, 1, 1, 1] [2023-11-19 07:56:21,119 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1] [2023-11-19 07:56:21,120 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 [2023-11-19 07:56:21,120 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 [2023-11-19 07:56:21,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:21,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1468745677, now seen corresponding path program 6 times [2023-11-19 07:56:21,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:21,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870778195] [2023-11-19 07:56:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:21,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:21,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:21,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:21,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1351673, now seen corresponding path program 3 times [2023-11-19 07:56:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383184921] [2023-11-19 07:56:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:21,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:21,174 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:21,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:21,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:21,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1914756667, now seen corresponding path program 7 times [2023-11-19 07:56:21,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:21,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48215207] [2023-11-19 07:56:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:21,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:21,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:56:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:23,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:56:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:56:23,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:56:23 BoogieIcfgContainer [2023-11-19 07:56:23,225 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:56:23,226 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:56:23,227 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:56:23,227 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:56:23,227 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:09" (3/4) ... [2023-11-19 07:56:23,229 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-19 07:56:23,309 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:56:23,309 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:56:23,310 INFO L158 Benchmark]: Toolchain (without parser) took 14801.54ms. Allocated memory was 136.3MB in the beginning and 213.9MB in the end (delta: 77.6MB). Free memory was 90.1MB in the beginning and 80.0MB in the end (delta: 10.0MB). Peak memory consumption was 89.9MB. Max. memory is 16.1GB. [2023-11-19 07:56:23,310 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 136.3MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:23,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.34ms. Allocated memory is still 136.3MB. Free memory was 89.8MB in the beginning and 80.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:56:23,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.98ms. Allocated memory is still 136.3MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:56:23,311 INFO L158 Benchmark]: Boogie Preprocessor took 22.68ms. Allocated memory is still 136.3MB. Free memory was 79.2MB in the beginning and 78.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:23,312 INFO L158 Benchmark]: RCFGBuilder took 314.95ms. Allocated memory is still 136.3MB. Free memory was 78.1MB in the beginning and 70.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:56:23,312 INFO L158 Benchmark]: BuchiAutomizer took 14133.98ms. Allocated memory was 136.3MB in the beginning and 213.9MB in the end (delta: 77.6MB). Free memory was 70.0MB in the beginning and 83.2MB in the end (delta: -13.2MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. [2023-11-19 07:56:23,312 INFO L158 Benchmark]: Witness Printer took 83.02ms. Allocated memory is still 213.9MB. Free memory was 83.2MB in the beginning and 80.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:56:23,314 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 136.3MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.34ms. Allocated memory is still 136.3MB. Free memory was 89.8MB in the beginning and 80.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.98ms. Allocated memory is still 136.3MB. Free memory was 80.4MB in the beginning and 79.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.68ms. Allocated memory is still 136.3MB. Free memory was 79.2MB in the beginning and 78.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 314.95ms. Allocated memory is still 136.3MB. Free memory was 78.1MB in the beginning and 70.0MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 14133.98ms. Allocated memory was 136.3MB in the beginning and 213.9MB in the end (delta: 77.6MB). Free memory was 70.0MB in the beginning and 83.2MB in the end (delta: -13.2MB). Peak memory consumption was 66.9MB. Max. memory is 16.1GB. * Witness Printer took 83.02ms. Allocated memory is still 213.9MB. Free memory was 83.2MB in the beginning and 80.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 11 terminating modules (6 trivial, 3 deterministic, 2 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function ((-2 * i) + 99) and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function ((-2 * i) + 99) and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 52 locations. The remainder module has 106 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.9s and 8 iterations. TraceHistogramMax:52. Analysis of lassos took 12.1s. Construction of modules took 0.3s. Büchi inclusion checks took 1.2s. 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, 0.4s 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: 63ms 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! [2023-11-19 07:56:23,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:23,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:23,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-19 07:56:24,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:24,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:24,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dea525e7-41f3-4c6d-87e4-b3a905ba6e62/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)