./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.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_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/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_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/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_7f02dc35-9117-4a9f-8736-a0321e12f16c/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 4cf25ea48272ba4463d41281066a1cec5687f4083cfa8522d5a9622c6308689c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:03,522 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:03,602 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 07:57:03,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:03,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:03,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:03,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:03,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:03,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:03,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:03,639 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:03,640 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:57:03,641 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:57:03,641 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:57:03,642 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:57:03,643 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:57:03,643 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:57:03,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:03,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:57:03,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:03,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:03,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:57:03,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:57:03,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:57:03,648 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:57:03,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:03,648 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:57:03,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:03,649 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:03,650 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:03,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:03,651 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:03,651 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:57:03,652 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_7f02dc35-9117-4a9f-8736-a0321e12f16c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4cf25ea48272ba4463d41281066a1cec5687f4083cfa8522d5a9622c6308689c [2023-11-19 07:57:03,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:03,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:03,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:03,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:03,952 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:03,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2023-11-19 07:57:07,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:07,367 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:07,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1.c [2023-11-19 07:57:07,376 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/data/f7de56652/22c762ecb99b4dc5a84a3cc91be8069e/FLAGad658aa21 [2023-11-19 07:57:07,695 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/data/f7de56652/22c762ecb99b4dc5a84a3cc91be8069e [2023-11-19 07:57:07,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:07,704 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:07,706 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:07,707 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:07,712 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:07,713 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,714 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd63954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07, skipping insertion in model container [2023-11-19 07:57:07,714 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,734 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:07,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:07,878 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:07,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:07,906 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:07,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07 WrapperNode [2023-11-19 07:57:07,907 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:07,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:07,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:07,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:07,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,922 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,939 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2023-11-19 07:57:07,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:07,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:07,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:07,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:07,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,951 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,951 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,953 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,958 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:07,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:07,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:07,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:07,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:07,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:08,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:08,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:08,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:08,130 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:08,132 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:08,204 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:08,212 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:08,212 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 07:57:08,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:08 BoogieIcfgContainer [2023-11-19 07:57:08,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:08,217 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:57:08,217 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:57:08,221 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:57:08,222 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:57:08,223 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:57:07" (1/3) ... [2023-11-19 07:57:08,224 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@162cd37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:57:08, skipping insertion in model container [2023-11-19 07:57:08,224 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:57:08,224 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07" (2/3) ... [2023-11-19 07:57:08,225 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@162cd37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:57:08, skipping insertion in model container [2023-11-19 07:57:08,225 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:57:08,225 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:08" (3/3) ... [2023-11-19 07:57:08,226 INFO L332 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1.c [2023-11-19 07:57:08,282 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:57:08,282 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:57:08,282 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:57:08,283 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:57:08,283 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:57:08,283 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:57:08,283 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:57:08,283 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:57:08,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:08,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:57:08,319 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:57:08,320 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:57:08,324 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:57:08,325 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:57:08,325 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:57:08,325 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:08,326 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-19 07:57:08,326 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:57:08,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:57:08,327 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:57:08,327 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:57:08,333 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L17-2true [2023-11-19 07:57:08,334 INFO L750 eck$LassoCheckResult]: Loop: 4#L17-2true assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 2#L19-2true assume !(main_~y~0#1 < main_~x~0#1); 9#L19-3true main_~x~0#1 := main_~x~0#1 - 1; 4#L17-2true [2023-11-19 07:57:08,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:08,346 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 07:57:08,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:08,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004802854] [2023-11-19 07:57:08,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:08,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:08,463 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:08,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:08,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2023-11-19 07:57:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:08,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026598669] [2023-11-19 07:57:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:08,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:08,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:08,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2023-11-19 07:57:08,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:08,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557679711] [2023-11-19 07:57:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:08,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:08,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:08,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:08,726 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:57:08,727 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:57:08,727 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:57:08,727 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:57:08,727 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:57:08,727 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:08,728 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:57:08,729 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:57:08,729 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2023-11-19 07:57:08,729 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:57:08,730 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:57:08,753 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 07:57:08,777 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 07:57:08,783 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 07:57:08,792 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 07:57:08,883 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:57:08,883 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:57:08,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:08,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:08,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:08,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:08,904 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:08,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 07:57:08,949 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:57:08,949 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 07:57:08,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:08,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:08,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:08,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:08,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 07:57:08,987 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:08,987 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:09,009 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:57:09,009 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 07:57:09,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:09,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:09,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:09,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 07:57:09,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:09,048 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:09,072 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:57:09,072 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=1} Honda state: {ULTIMATE.start_main_~y~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:57:09,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:09,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:09,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:09,097 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:09,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:09,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:57:09,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:09,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:09,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:09,166 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:57:09,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:57:09,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:09,218 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:57:09,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:09,241 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:57:09,241 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:57:09,242 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:57:09,242 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:57:09,242 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:57:09,242 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:09,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:57:09,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:57:09,243 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration1_Loop [2023-11-19 07:57:09,243 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:57:09,243 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:57:09,245 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 07:57:09,251 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 07:57:09,260 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 07:57:09,280 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 07:57:09,359 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:57:09,364 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:57:09,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:09,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:09,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:57:09,371 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 07:57:09,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:09,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:09,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:09,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:09,391 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:57:09,391 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:57:09,405 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:57:09,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:09,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:09,429 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,440 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 07:57:09,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:09,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:09,453 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:09,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:09,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:57:09,458 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:57:09,459 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:57:09,478 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:57:09,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:09,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:09,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:09,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,507 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 07:57:09,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:09,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:57:09,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:09,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:09,520 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:09,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:57:09,522 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:57:09,523 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:57:09,542 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:57:09,545 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:57:09,546 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:57:09,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:09,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:09,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:09,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:57:09,574 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:57:09,574 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:57:09,574 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:57:09,575 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 2*ULTIMATE.start_main_~x~0#1 + 1 Supporting invariants [] [2023-11-19 07:57:09,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:09,595 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:57:09,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:09,645 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:57:09,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:09,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:57:09,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:09,700 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 07:57:09,738 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 07:57:09,740 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 07:57:09,843 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 22 states and 34 transitions. Complement of second has 8 states. [2023-11-19 07:57:09,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:57:09,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 07:57:09,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2023-11-19 07:57:09,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-19 07:57:09,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:09,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-19 07:57:09,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:09,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-19 07:57:09,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:09,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2023-11-19 07:57:09,863 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:57:09,866 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 8 states and 11 transitions. [2023-11-19 07:57:09,868 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-11-19 07:57:09,868 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2023-11-19 07:57:09,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2023-11-19 07:57:09,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:57:09,869 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2023-11-19 07:57:09,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2023-11-19 07:57:09,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-11-19 07:57:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 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 07:57:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2023-11-19 07:57:09,905 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2023-11-19 07:57:09,907 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2023-11-19 07:57:09,907 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:57:09,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2023-11-19 07:57:09,909 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:57:09,910 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:57:09,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:57:09,910 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:57:09,910 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:57:09,911 INFO L748 eck$LassoCheckResult]: Stem: 78#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 79#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 76#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 73#L19-2 [2023-11-19 07:57:09,911 INFO L750 eck$LassoCheckResult]: Loop: 73#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 73#L19-2 [2023-11-19 07:57:09,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-19 07:57:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155007935] [2023-11-19 07:57:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:09,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:09,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:09,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,930 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2023-11-19 07:57:09,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:09,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392011478] [2023-11-19 07:57:09,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:09,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:09,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:09,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2023-11-19 07:57:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:09,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104087946] [2023-11-19 07:57:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:09,978 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:09,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:10,050 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:57:10,050 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:57:10,050 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:57:10,050 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:57:10,051 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:57:10,051 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:10,051 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:57:10,051 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:57:10,051 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2023-11-19 07:57:10,051 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:57:10,051 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:57:10,056 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 07:57:10,060 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 07:57:10,064 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 07:57:10,068 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 07:57:10,085 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 07:57:10,089 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 07:57:10,162 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:57:10,162 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:57:10,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:10,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:10,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:10,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:57:10,173 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:10,173 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:10,193 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:57:10,193 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 07:57:10,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:10,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:10,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:10,210 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:10,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:57:10,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:10,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:10,224 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:57:10,224 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0#1=0} Honda state: {ULTIMATE.start_main_#t~nondet0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:57:10,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:10,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:10,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:10,241 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:10,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:57:10,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:10,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:10,260 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:57:10,260 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1#1=0} Honda state: {ULTIMATE.start_main_#t~nondet1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:57:10,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:10,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:10,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:10,285 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:10,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:57:10,291 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:10,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:10,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:10,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:10,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:10,342 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:10,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:57:10,347 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:57:10,347 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:22,449 INFO L442 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2023-11-19 07:57:22,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,463 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:57:22,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:57:22,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:57:22,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:57:22,463 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:57:22,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:22,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:57:22,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:57:22,463 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration2_Lasso [2023-11-19 07:57:22,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:57:22,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:57:22,466 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 07:57:22,470 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:57:22,473 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 07:57:22,476 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 07:57:22,490 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 07:57:22,493 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 07:57:22,553 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:57:22,553 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:57:22,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:22,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,555 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,567 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 07:57:22,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:57:22,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:22,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:22,581 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:22,581 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:22,586 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:57:22,586 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:57:22,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:57:22,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:22,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,623 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,631 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 07:57:22,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:22,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:57:22,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:22,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:22,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:22,645 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:57:22,645 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:57:22,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:57:22,658 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:57:22,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:22,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,683 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,686 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 07:57:22,699 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:22,699 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:57:22,699 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:22,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:22,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:22,707 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:57:22,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:57:22,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 07:57:22,721 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:57:22,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:22,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,744 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:57:22,746 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 07:57:22,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:22,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:22,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:22,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:22,771 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:57:22,771 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:57:22,792 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:57:22,801 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2023-11-19 07:57:22,802 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 07:57:22,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:22,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:22,808 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:22,820 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:57:22,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:57:22,848 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2023-11-19 07:57:22,848 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:57:22,849 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2023-11-19 07:57:22,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:22,873 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-11-19 07:57:22,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:22,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:22,929 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:22,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:22,930 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 07:57:22,931 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 07:57:22,932 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 07:57:22,976 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 14 states and 19 transitions. Complement of second has 5 states. [2023-11-19 07:57:22,977 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 07:57:22,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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 07:57:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-19 07:57:22,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 1 letters. [2023-11-19 07:57:22,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:22,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 4 letters. Loop has 1 letters. [2023-11-19 07:57:22,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:22,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2023-11-19 07:57:22,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:22,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2023-11-19 07:57:22,981 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:57:22,982 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 14 transitions. [2023-11-19 07:57:22,982 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-11-19 07:57:22,982 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-11-19 07:57:22,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2023-11-19 07:57:22,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:57:22,982 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 14 transitions. [2023-11-19 07:57:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2023-11-19 07:57:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 7. [2023-11-19 07:57:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2023-11-19 07:57:22,984 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-11-19 07:57:22,984 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2023-11-19 07:57:22,985 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:57:22,985 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2023-11-19 07:57:22,985 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:57:22,985 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:57:22,986 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:57:22,986 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2023-11-19 07:57:22,986 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:57:22,986 INFO L748 eck$LassoCheckResult]: Stem: 139#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 140#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 137#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 135#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 136#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 138#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 134#L19-2 [2023-11-19 07:57:22,987 INFO L750 eck$LassoCheckResult]: Loop: 134#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 134#L19-2 [2023-11-19 07:57:22,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:22,987 INFO L85 PathProgramCache]: Analyzing trace with hash 889696477, now seen corresponding path program 2 times [2023-11-19 07:57:22,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:22,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305193445] [2023-11-19 07:57:22,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:22,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:22,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:23,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2023-11-19 07:57:23,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:23,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174850380] [2023-11-19 07:57:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:23,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:23,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1810787031, now seen corresponding path program 1 times [2023-11-19 07:57:23,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:23,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331218413] [2023-11-19 07:57:23,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:23,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:23,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:23,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331218413] [2023-11-19 07:57:23,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331218413] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:23,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147299936] [2023-11-19 07:57:23,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:23,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:23,107 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:23,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-19 07:57:23,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:57:23,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:23,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:23,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:23,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:23,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147299936] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:23,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:23,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-11-19 07:57:23,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614622613] [2023-11-19 07:57:23,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:23,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:23,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:57:23,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:57:23,352 INFO L87 Difference]: Start difference. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:23,501 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-11-19 07:57:23,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 26 transitions. [2023-11-19 07:57:23,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:57:23,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 11 states and 13 transitions. [2023-11-19 07:57:23,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-19 07:57:23,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-19 07:57:23,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2023-11-19 07:57:23,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:57:23,504 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-11-19 07:57:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2023-11-19 07:57:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2023-11-19 07:57:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 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 07:57:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-11-19 07:57:23,506 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-19 07:57:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:57:23,508 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-19 07:57:23,508 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:57:23,508 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2023-11-19 07:57:23,509 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-11-19 07:57:23,509 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:57:23,509 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:57:23,509 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2023-11-19 07:57:23,509 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-11-19 07:57:23,510 INFO L748 eck$LassoCheckResult]: Stem: 228#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 229#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 226#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 224#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 225#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 231#L19-2 assume !(main_~y~0#1 < main_~x~0#1); 230#L19-3 main_~x~0#1 := main_~x~0#1 - 1; 227#L17-2 assume !!(main_~x~0#1 >= 0 && main_~x~0#1 <= 1073741823);main_~y~0#1 := 1; 223#L19-2 [2023-11-19 07:57:23,510 INFO L750 eck$LassoCheckResult]: Loop: 223#L19-2 assume !!(main_~y~0#1 < main_~x~0#1);main_~y~0#1 := 2 * main_~y~0#1; 223#L19-2 [2023-11-19 07:57:23,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash 301557853, now seen corresponding path program 2 times [2023-11-19 07:57:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085365673] [2023-11-19 07:57:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:23,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:23,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 3 times [2023-11-19 07:57:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:23,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595833751] [2023-11-19 07:57:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:23,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:23,539 INFO L85 PathProgramCache]: Analyzing trace with hash 758358871, now seen corresponding path program 3 times [2023-11-19 07:57:23,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:23,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76537208] [2023-11-19 07:57:23,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:23,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,548 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:57:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:57:23,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:57:23,627 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:57:23,627 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:57:23,628 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:57:23,628 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:57:23,628 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:57:23,628 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:23,628 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:57:23,628 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:57:23,628 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration4_Lasso [2023-11-19 07:57:23,628 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:57:23,628 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:57:23,630 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 07:57:23,641 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 07:57:23,643 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 07:57:23,646 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 07:57:23,649 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 07:57:23,651 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 07:57:23,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:57:23,722 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:57:23,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:23,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:23,723 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:23,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:57:23,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:23,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:57:23,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:23,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:23,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:23,796 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:23,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:57:23,799 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:57:23,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:57:23,922 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:57:23,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-19 07:57:23,925 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:57:23,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:57:23,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:57:23,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:57:23,925 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:57:23,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:23,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:57:23,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:57:23,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-LICS2004-Fig1.c_Iteration4_Lasso [2023-11-19 07:57:23,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:57:23,926 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:57:23,927 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 07:57:23,938 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 07:57:23,941 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:57:23,944 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:57:23,958 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 07:57:23,962 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 07:57:24,035 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:57:24,035 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:57:24,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:24,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:24,036 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:24,043 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 07:57:24,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:24,056 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:57:24,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:24,056 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:24,056 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:24,057 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:57:24,057 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:57:24,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:57:24,067 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:57:24,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-19 07:57:24,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:24,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:24,091 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:24,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:57:24,093 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 07:57:24,103 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:24,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:24,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:24,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:24,107 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:57:24,107 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:57:24,138 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:57:24,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:24,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:24,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:24,159 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:24,167 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 07:57:24,179 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:24,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:57:24,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:24,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:24,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:24,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:57:24,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:57:24,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:57:24,198 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:57:24,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:24,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:24,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:24,223 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:24,227 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 07:57:24,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:57:24,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:57:24,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:57:24,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:57:24,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:57:24,245 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-19 07:57:24,245 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-19 07:57:24,266 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:57:24,290 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2023-11-19 07:57:24,291 INFO L444 ModelExtractionUtils]: 2 out of 10 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-11-19 07:57:24,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:57:24,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:24,301 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:24,310 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:57:24,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:57:24,340 INFO L438 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2023-11-19 07:57:24,341 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:57:24,341 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~x~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [1*ULTIMATE.start_main_~y~0#1 - 1 >= 0] [2023-11-19 07:57:24,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:24,370 INFO L156 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2023-11-19 07:57:24,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:24,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:24,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:24,438 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:24,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:24,439 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 07:57:24,441 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 07:57:24,442 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 07:57:24,480 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 16 states and 20 transitions. Complement of second has 5 states. [2023-11-19 07:57:24,481 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 07:57:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 07:57:24,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-19 07:57:24,488 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2023-11-19 07:57:24,489 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:24,489 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:57:24,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:24,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:24,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:24,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:24,560 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:24,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:24,560 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 07:57:24,561 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 07:57:24,562 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 07:57:24,592 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 16 states and 20 transitions. Complement of second has 5 states. [2023-11-19 07:57:24,593 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 07:57:24,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 07:57:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-19 07:57:24,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 8 letters. Loop has 1 letters. [2023-11-19 07:57:24,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:24,596 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:57:24,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:24,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:57:24,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:24,649 WARN L260 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:57:24,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:24,651 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 07:57:24,652 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 07:57:24,652 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 07:57:24,685 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 11 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 12 states and 14 transitions. Complement of second has 4 states. [2023-11-19 07:57:24,686 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 07:57:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 07:57:24,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-11-19 07:57:24,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2023-11-19 07:57:24,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:24,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2023-11-19 07:57:24,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:24,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 2 letters. [2023-11-19 07:57:24,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:57:24,690 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2023-11-19 07:57:24,695 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:57:24,696 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 0 states and 0 transitions. [2023-11-19 07:57:24,696 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:57:24,696 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:57:24,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:57:24,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:24,696 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:57:24,696 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:57:24,697 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:57:24,697 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:57:24,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:57:24,697 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:57:24,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:57:24,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:57:24 BoogieIcfgContainer [2023-11-19 07:57:24,713 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:57:24,713 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:57:24,713 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:57:24,714 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:57:24,714 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:08" (3/4) ... [2023-11-19 07:57:24,716 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:57:24,717 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:57:24,718 INFO L158 Benchmark]: Toolchain (without parser) took 17013.51ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 93.6MB in the beginning and 102.7MB in the end (delta: -9.1MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2023-11-19 07:57:24,718 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 127.9MB. Free memory was 99.5MB in the beginning and 99.4MB in the end (delta: 80.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:24,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.46ms. Allocated memory is still 127.9MB. Free memory was 93.6MB in the beginning and 84.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:57:24,719 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.99ms. Allocated memory is still 127.9MB. Free memory was 84.3MB in the beginning and 82.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:57:24,719 INFO L158 Benchmark]: Boogie Preprocessor took 19.17ms. Allocated memory is still 127.9MB. Free memory was 82.8MB in the beginning and 82.0MB in the end (delta: 832.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:24,719 INFO L158 Benchmark]: RCFGBuilder took 255.97ms. Allocated memory is still 127.9MB. Free memory was 81.9MB in the beginning and 73.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 07:57:24,720 INFO L158 Benchmark]: BuchiAutomizer took 16495.78ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 73.5MB in the beginning and 102.7MB in the end (delta: -29.2MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2023-11-19 07:57:24,720 INFO L158 Benchmark]: Witness Printer took 3.88ms. Allocated memory is still 192.9MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:24,722 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 127.9MB. Free memory was 99.5MB in the beginning and 99.4MB in the end (delta: 80.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.46ms. Allocated memory is still 127.9MB. Free memory was 93.6MB in the beginning and 84.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.99ms. Allocated memory is still 127.9MB. Free memory was 84.3MB in the beginning and 82.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.17ms. Allocated memory is still 127.9MB. Free memory was 82.8MB in the beginning and 82.0MB in the end (delta: 832.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 255.97ms. Allocated memory is still 127.9MB. Free memory was 81.9MB in the beginning and 73.6MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 16495.78ms. Allocated memory was 127.9MB in the beginning and 192.9MB in the end (delta: 65.0MB). Free memory was 73.5MB in the beginning and 102.7MB in the end (delta: -29.2MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * Witness Printer took 3.88ms. Allocated memory is still 192.9MB. Free memory is still 102.7MB. There was no memory consumed. 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 (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function ((2 * x) + 1) and consists of 5 locations. One deterministic module has affine ranking function ((-1 * y) + x) and consists of 3 locations. One nondeterministic module has affine ranking function ((-1 * y) + x) and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.4s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 15.4s. Construction of modules took 0.1s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 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 [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 22 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax163 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq147 hnf93 smp100 dnf100 smp100 tf103 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 39ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 1 LassoNonterminationAnalysisTime: 12.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 07:57:24,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:24,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-19 07:57:25,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f02dc35-9117-4a9f-8736-a0321e12f16c/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 Result: TRUE