./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/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_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/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_3c8b728b-d76d-4be1-8633-a684fa1bff53/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 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:04,225 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:04,294 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 08:06:04,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:04,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:04,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:04,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:04,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:04,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:04,330 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:04,331 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:04,331 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 08:06:04,332 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 08:06:04,333 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 08:06:04,333 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 08:06:04,334 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 08:06:04,334 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 08:06:04,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:04,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 08:06:04,336 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:04,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:04,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 08:06:04,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 08:06:04,339 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 08:06:04,339 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:06:04,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:04,340 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 08:06:04,341 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:04,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:04,342 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:04,343 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:04,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:04,344 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 08:06:04,345 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_3c8b728b-d76d-4be1-8633-a684fa1bff53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9816d5cc9e8c1fba9291af90498afaa319416e5c56fa3cf3ce8da9d63d3e9939 [2023-11-19 08:06:04,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:04,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:04,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:04,675 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:04,676 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:04,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2023-11-19 08:06:07,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:08,029 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:08,030 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2023-11-19 08:06:08,037 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/data/91d851037/f604f004ceff4cf888302bedd7cd1761/FLAGe46fc36a6 [2023-11-19 08:06:08,050 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/data/91d851037/f604f004ceff4cf888302bedd7cd1761 [2023-11-19 08:06:08,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:08,054 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:08,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:08,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:08,066 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:08,067 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8bb6464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08, skipping insertion in model container [2023-11-19 08:06:08,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,089 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:08,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:08,262 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:08,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:08,287 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:08,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08 WrapperNode [2023-11-19 08:06:08,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:08,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:08,290 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:08,290 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:08,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,322 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2023-11-19 08:06:08,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:08,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:08,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:08,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:08,332 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,333 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,340 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,343 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:08,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:08,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:08,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:08,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (1/1) ... [2023-11-19 08:06:08,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:08,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:08,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:08,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:08,493 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:08,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:08,580 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:08,588 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:08,589 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:06:08,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:08 BoogieIcfgContainer [2023-11-19 08:06:08,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:08,593 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 08:06:08,593 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 08:06:08,598 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 08:06:08,599 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:06:08,599 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 08:06:08" (1/3) ... [2023-11-19 08:06:08,600 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ffe3aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:06:08, skipping insertion in model container [2023-11-19 08:06:08,600 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:06:08,601 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:08" (2/3) ... [2023-11-19 08:06:08,601 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ffe3aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:06:08, skipping insertion in model container [2023-11-19 08:06:08,601 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:06:08,601 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:08" (3/3) ... [2023-11-19 08:06:08,603 INFO L332 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2023-11-19 08:06:08,665 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 08:06:08,665 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 08:06:08,666 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 08:06:08,666 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 08:06:08,666 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 08:06:08,666 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 08:06:08,666 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 08:06:08,666 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 08:06:08,670 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 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 08:06:08,686 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:06:08,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:06:08,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:06:08,694 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 08:06:08,694 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 08:06:08,694 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 08:06:08,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 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 08:06:08,696 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:06:08,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:06:08,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:06:08,697 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 08:06:08,697 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 08:06:08,704 INFO L748 eck$LassoCheckResult]: Stem: 8#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 10#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 6#L18-2true [2023-11-19 08:06:08,704 INFO L750 eck$LassoCheckResult]: Loop: 6#L18-2true assume !!(0 != main_~i~0#1); 7#L10true assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 3#L18true assume !(main_~i~0#1 > 0); 6#L18-2true [2023-11-19 08:06:08,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:08,709 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 08:06:08,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:08,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234344515] [2023-11-19 08:06:08,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:08,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:08,788 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:08,805 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:08,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash 41231, now seen corresponding path program 1 times [2023-11-19 08:06:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785427875] [2023-11-19 08:06:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:08,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:08,828 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:08,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:08,830 INFO L85 PathProgramCache]: Analyzing trace with hash 28700173, now seen corresponding path program 1 times [2023-11-19 08:06:08,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:08,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462733100] [2023-11-19 08:06:08,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:08,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:08,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:08,844 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:08,924 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:06:08,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:06:08,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:06:08,960 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:06:08,961 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:06:08,961 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:08,961 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:06:08,961 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:06:08,961 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2023-11-19 08:06:08,962 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:06:08,962 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:06:08,982 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 08:06:08,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:06:09,003 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 08:06:09,118 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:06:09,118 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:06:09,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,128 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:06:09,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:06:09,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 08:06:09,172 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:06:09,173 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 08:06:09,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:09,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 08:06:09,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:06:09,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:06:09,222 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:06:09,222 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 08:06:09,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 08:06:09,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:06:09,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:06:09,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:09,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 08:06:09,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:06:09,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:06:09,317 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:06:09,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-19 08:06:09,325 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:06:09,325 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:06:09,325 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:06:09,326 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:06:09,326 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:06:09,326 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,326 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:06:09,326 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:06:09,326 INFO L133 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2023-11-19 08:06:09,326 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:06:09,327 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:06:09,329 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 08:06:09,338 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:06:09,348 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 08:06:09,443 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:06:09,450 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:06:09,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,457 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,465 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 08:06:09,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 08:06:09,478 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:06:09,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:06:09,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:06:09,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:06:09,488 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:06:09,488 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:06:09,508 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:06:09,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:09,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 08:06:09,536 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 08:06:09,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:06:09,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:06:09,549 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:06:09,549 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:06:09,553 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 08:06:09,553 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 08:06:09,566 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:06:09,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:09,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,592 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,602 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 08:06:09,614 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:06:09,614 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:06:09,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:06:09,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:06:09,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:06:09,618 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:06:09,618 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:06:09,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 08:06:09,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:06:09,639 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 08:06:09,640 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 08:06:09,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:06:09,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:09,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:09,682 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:06:09,682 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 08:06:09,683 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:06:09,683 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 08:06:09,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 08:06:09,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:09,714 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 08:06:09,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,758 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:06:09,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:09,777 WARN L260 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:06:09,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:09,851 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 08:06:09,899 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 08:06:09,901 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 08:06:09,961 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 44 transitions. Complement of second has 6 states. [2023-11-19 08:06:09,963 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 08:06:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 08:06:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-11-19 08:06:09,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-19 08:06:09,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:06:09,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-19 08:06:09,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:06:09,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-19 08:06:09,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:06:09,975 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 44 transitions. [2023-11-19 08:06:09,978 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:06:09,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 15 states and 22 transitions. [2023-11-19 08:06:09,983 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-11-19 08:06:09,984 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-19 08:06:09,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2023-11-19 08:06:09,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:06:09,985 INFO L218 hiAutomatonCegarLoop]: Abstraction has 15 states and 22 transitions. [2023-11-19 08:06:10,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2023-11-19 08:06:10,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-19 08:06:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 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 08:06:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 21 transitions. [2023-11-19 08:06:10,027 INFO L240 hiAutomatonCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-11-19 08:06:10,027 INFO L428 stractBuchiCegarLoop]: Abstraction has 14 states and 21 transitions. [2023-11-19 08:06:10,027 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 08:06:10,027 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 21 transitions. [2023-11-19 08:06:10,030 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:06:10,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:06:10,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:06:10,032 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 08:06:10,032 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 08:06:10,032 INFO L748 eck$LassoCheckResult]: Stem: 88#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 89#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 90#L18-2 assume !!(0 != main_~i~0#1); 85#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 87#L12 [2023-11-19 08:06:10,033 INFO L750 eck$LassoCheckResult]: Loop: 87#L12 assume !(main_~i~0#1 < 0); 79#L18-2 assume !!(0 != main_~i~0#1); 91#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 87#L12 [2023-11-19 08:06:10,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,036 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-19 08:06:10,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746722811] [2023-11-19 08:06:10,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:10,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash 53210, now seen corresponding path program 1 times [2023-11-19 08:06:10,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733613322] [2023-11-19 08:06:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,133 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 08:06:10,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:10,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733613322] [2023-11-19 08:06:10,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733613322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:10,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:10,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:06:10,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368285258] [2023-11-19 08:06:10,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:10,139 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 08:06:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:06:10,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:06:10,144 INFO L87 Difference]: Start difference. First operand 14 states and 21 transitions. cyclomatic complexity: 9 Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 08:06:10,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:10,169 INFO L93 Difference]: Finished difference Result 16 states and 23 transitions. [2023-11-19 08:06:10,169 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2023-11-19 08:06:10,174 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-19 08:06:10,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 23 transitions. [2023-11-19 08:06:10,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-19 08:06:10,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-19 08:06:10,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 23 transitions. [2023-11-19 08:06:10,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:06:10,176 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-11-19 08:06:10,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 23 transitions. [2023-11-19 08:06:10,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-19 08:06:10,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 15 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 08:06:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 23 transitions. [2023-11-19 08:06:10,182 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-11-19 08:06:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:06:10,183 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 23 transitions. [2023-11-19 08:06:10,183 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 08:06:10,183 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 23 transitions. [2023-11-19 08:06:10,188 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-19 08:06:10,188 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:06:10,188 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:06:10,190 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 08:06:10,190 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 08:06:10,191 INFO L748 eck$LassoCheckResult]: Stem: 126#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 127#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 128#L18-2 assume !!(0 != main_~i~0#1); 124#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 125#L12 [2023-11-19 08:06:10,192 INFO L750 eck$LassoCheckResult]: Loop: 125#L12 assume main_~i~0#1 < 0; 120#L13 assume !(main_~i~0#1 <= -2147483648);main_~i~0#1 := -1 * main_~i~0#1; 115#L18-2 assume !!(0 != main_~i~0#1); 129#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 125#L12 [2023-11-19 08:06:10,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 2 times [2023-11-19 08:06:10,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632143088] [2023-11-19 08:06:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:10,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1451465, now seen corresponding path program 1 times [2023-11-19 08:06:10,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851956082] [2023-11-19 08:06:10,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,303 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 08:06:10,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:10,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851956082] [2023-11-19 08:06:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851956082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:10,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:10,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:10,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737537879] [2023-11-19 08:06:10,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:10,304 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 08:06:10,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:10,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:10,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:10,306 INFO L87 Difference]: Start difference. First operand 16 states and 23 transitions. cyclomatic complexity: 9 Second operand has 4 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 08:06:10,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:10,344 INFO L93 Difference]: Finished difference Result 22 states and 28 transitions. [2023-11-19 08:06:10,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 28 transitions. [2023-11-19 08:06:10,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-11-19 08:06:10,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 27 transitions. [2023-11-19 08:06:10,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-19 08:06:10,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-19 08:06:10,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 27 transitions. [2023-11-19 08:06:10,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:06:10,349 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-11-19 08:06:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 27 transitions. [2023-11-19 08:06:10,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2023-11-19 08:06:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 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 08:06:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2023-11-19 08:06:10,355 INFO L240 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-11-19 08:06:10,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:10,358 INFO L428 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2023-11-19 08:06:10,358 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 08:06:10,358 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2023-11-19 08:06:10,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 08:06:10,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:06:10,361 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:06:10,361 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 08:06:10,361 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2023-11-19 08:06:10,361 INFO L748 eck$LassoCheckResult]: Stem: 169#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 170#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 171#L18-2 assume !!(0 != main_~i~0#1); 166#L10 [2023-11-19 08:06:10,362 INFO L750 eck$LassoCheckResult]: Loop: 166#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 168#L12 assume !(main_~i~0#1 < 0); 165#L18-2 assume !!(0 != main_~i~0#1); 172#L10 assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 159#L18 assume main_~i~0#1 > 0;main_~i~0#1 := -1 * main_~i~0#1; 161#L18-2 assume !!(0 != main_~i~0#1); 166#L10 [2023-11-19 08:06:10,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,362 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-19 08:06:10,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340053639] [2023-11-19 08:06:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:10,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830888, now seen corresponding path program 1 times [2023-11-19 08:06:10,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860406634] [2023-11-19 08:06:10,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:06:10,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:10,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860406634] [2023-11-19 08:06:10,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860406634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:10,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:10,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:10,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56153257] [2023-11-19 08:06:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:10,467 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 08:06:10,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:10,468 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 1.5) 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 08:06:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:10,510 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2023-11-19 08:06:10,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 33 transitions. [2023-11-19 08:06:10,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-19 08:06:10,512 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 25 states and 31 transitions. [2023-11-19 08:06:10,512 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-19 08:06:10,513 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-11-19 08:06:10,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 31 transitions. [2023-11-19 08:06:10,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:06:10,513 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-19 08:06:10,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 31 transitions. [2023-11-19 08:06:10,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2023-11-19 08:06:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 16 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 08:06:10,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-11-19 08:06:10,516 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-11-19 08:06:10,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:06:10,518 INFO L428 stractBuchiCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-11-19 08:06:10,518 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 08:06:10,518 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 23 transitions. [2023-11-19 08:06:10,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2023-11-19 08:06:10,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:06:10,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:06:10,519 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 08:06:10,519 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2023-11-19 08:06:10,519 INFO L748 eck$LassoCheckResult]: Stem: 214#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 215#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 216#L18-2 assume !!(0 != main_~i~0#1); 212#L10 [2023-11-19 08:06:10,520 INFO L750 eck$LassoCheckResult]: Loop: 212#L10 assume main_~i~0#1 < 0;main_~i~0#1 := 2 + main_~i~0#1; 217#L12 assume !(main_~i~0#1 < 0); 218#L18-2 assume !!(0 != main_~i~0#1); 213#L10 assume !(main_~i~0#1 < 0);main_~i~0#1 := main_~i~0#1 - 2; 208#L18 assume !(main_~i~0#1 > 0); 209#L18-2 assume !!(0 != main_~i~0#1); 212#L10 [2023-11-19 08:06:10,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,520 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2023-11-19 08:06:10,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893415928] [2023-11-19 08:06:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:10,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1310830950, now seen corresponding path program 1 times [2023-11-19 08:06:10,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156861703] [2023-11-19 08:06:10,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:10,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:10,540 INFO L85 PathProgramCache]: Analyzing trace with hash 590073037, now seen corresponding path program 1 times [2023-11-19 08:06:10,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:10,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318972674] [2023-11-19 08:06:10,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:10,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,554 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:06:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,655 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:06:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:06:10,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 08:06:10 BoogieIcfgContainer [2023-11-19 08:06:10,687 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 08:06:10,687 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:06:10,687 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:06:10,688 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:06:10,688 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:08" (3/4) ... [2023-11-19 08:06:10,690 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-19 08:06:10,739 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:06:10,739 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:06:10,740 INFO L158 Benchmark]: Toolchain (without parser) took 2685.92ms. Allocated memory was 159.4MB in the beginning and 220.2MB in the end (delta: 60.8MB). Free memory was 111.2MB in the beginning and 129.8MB in the end (delta: -18.6MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-19 08:06:10,740 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 159.4MB. Free memory was 132.5MB in the beginning and 132.3MB in the end (delta: 161.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:06:10,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.56ms. Allocated memory is still 159.4MB. Free memory was 111.0MB in the beginning and 101.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 08:06:10,741 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.87ms. Allocated memory is still 159.4MB. Free memory was 101.7MB in the beginning and 100.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:06:10,742 INFO L158 Benchmark]: Boogie Preprocessor took 20.53ms. Allocated memory is still 159.4MB. Free memory was 100.1MB in the beginning and 99.2MB in the end (delta: 849.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:06:10,742 INFO L158 Benchmark]: RCFGBuilder took 248.12ms. Allocated memory is still 159.4MB. Free memory was 99.0MB in the beginning and 90.4MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 08:06:10,743 INFO L158 Benchmark]: BuchiAutomizer took 2093.40ms. Allocated memory was 159.4MB in the beginning and 220.2MB in the end (delta: 60.8MB). Free memory was 90.2MB in the beginning and 130.9MB in the end (delta: -40.6MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2023-11-19 08:06:10,745 INFO L158 Benchmark]: Witness Printer took 52.29ms. Allocated memory is still 220.2MB. Free memory was 130.9MB in the beginning and 129.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:06:10,747 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 159.4MB. Free memory was 132.5MB in the beginning and 132.3MB in the end (delta: 161.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.56ms. Allocated memory is still 159.4MB. Free memory was 111.0MB in the beginning and 101.7MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.87ms. Allocated memory is still 159.4MB. Free memory was 101.7MB in the beginning and 100.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.53ms. Allocated memory is still 159.4MB. Free memory was 100.1MB in the beginning and 99.2MB in the end (delta: 849.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 248.12ms. Allocated memory is still 159.4MB. Free memory was 99.0MB in the beginning and 90.4MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 2093.40ms. Allocated memory was 159.4MB in the beginning and 220.2MB in the end (delta: 60.8MB). Free memory was 90.2MB in the beginning and 130.9MB in the end (delta: -40.6MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * Witness Printer took 52.29ms. Allocated memory is still 220.2MB. Free memory was 130.9MB in the beginning and 129.8MB in the end (delta: 1.1MB). 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 4 terminating modules (3 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 17 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 30 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI3 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax170 hnf100 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf96 smp69 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 56ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s 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 = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 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 = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 VAL [i=-1] Loop: [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) [L9] COND TRUE i != 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-19 08:06:10,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:11,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c8b728b-d76d-4be1-8633-a684fa1bff53/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)