./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-bwb/and-06.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_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/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_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-bwb/and-06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/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_c928294c-1156-448f-9a34-f71f210b373a/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 d5d25da990643b4b5025c4e511382360ecc906ce1073cabf600162c7aef9f4cd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:54,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:54,580 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-19 08:00:54,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:54,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:54,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:54,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:54,633 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:54,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:54,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:54,641 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:54,642 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 08:00:54,642 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 08:00:54,644 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 08:00:54,645 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 08:00:54,645 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 08:00:54,646 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 08:00:54,647 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:54,647 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 08:00:54,648 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:54,649 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:54,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 08:00:54,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 08:00:54,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 08:00:54,652 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:54,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:54,653 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 08:00:54,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:54,654 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:54,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:54,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:54,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:54,657 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 08:00:54,658 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_c928294c-1156-448f-9a34-f71f210b373a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5d25da990643b4b5025c4e511382360ecc906ce1073cabf600162c7aef9f4cd [2023-11-19 08:00:54,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:55,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:55,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:55,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:55,006 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:55,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/termination-bwb/and-06.c [2023-11-19 08:00:58,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:58,286 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:58,287 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/sv-benchmarks/c/termination-bwb/and-06.c [2023-11-19 08:00:58,299 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/data/f8dcebcd1/bbd0e484a48d460d921b908a2defcb4a/FLAG9afa3dc67 [2023-11-19 08:00:58,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/data/f8dcebcd1/bbd0e484a48d460d921b908a2defcb4a [2023-11-19 08:00:58,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:58,325 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:58,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:58,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:58,336 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:58,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c9913c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58, skipping insertion in model container [2023-11-19 08:00:58,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,369 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:58,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:58,571 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:58,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:58,616 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:58,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58 WrapperNode [2023-11-19 08:00:58,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:58,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:58,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:58,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:58,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,660 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-11-19 08:00:58,660 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:58,661 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:58,662 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:58,662 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:58,674 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,707 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:58,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:58,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:58,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:58,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (1/1) ... [2023-11-19 08:00:58,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:58,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:58,742 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:58,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:58,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:58,859 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:58,862 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:59,079 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:59,086 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:59,092 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:00:59,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:59 BoogieIcfgContainer [2023-11-19 08:00:59,096 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:59,099 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 08:00:59,099 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 08:00:59,103 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 08:00:59,104 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:00:59,104 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 08:00:58" (1/3) ... [2023-11-19 08:00:59,105 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a5b09b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:00:59, skipping insertion in model container [2023-11-19 08:00:59,105 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:00:59,106 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:58" (2/3) ... [2023-11-19 08:00:59,107 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a5b09b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 08:00:59, skipping insertion in model container [2023-11-19 08:00:59,108 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 08:00:59,108 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:59" (3/3) ... [2023-11-19 08:00:59,110 INFO L332 chiAutomizerObserver]: Analyzing ICFG and-06.c [2023-11-19 08:00:59,203 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 08:00:59,203 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 08:00:59,203 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 08:00:59,204 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 08:00:59,204 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 08:00:59,204 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 08:00:59,206 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 08:00:59,206 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 08:00:59,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,235 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 08:00:59,236 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:59,236 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:59,245 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 08:00:59,245 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 08:00:59,246 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 08:00:59,247 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:59,250 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 08:00:59,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:00:59,252 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:00:59,252 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 08:00:59,253 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 08:00:59,265 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 8#L18-2true [2023-11-19 08:00:59,266 INFO L750 eck$LassoCheckResult]: Loop: 8#L18-2true assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 6#L18true assume !(main_~a~0#1 > 0); 9#L21true assume 0 == main_~x~0#1 || 0 == main_~x~0#1 - 1;main_#t~nondet4#1 := 0; 13#L21-4true main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 8#L18-2true [2023-11-19 08:00:59,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:59,274 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 08:00:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:59,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348927013] [2023-11-19 08:00:59,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:59,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,384 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:59,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:59,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1279131, now seen corresponding path program 1 times [2023-11-19 08:00:59,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:59,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415488573] [2023-11-19 08:00:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:59,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:59,449 INFO L85 PathProgramCache]: Analyzing trace with hash 889706333, now seen corresponding path program 1 times [2023-11-19 08:00:59,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:59,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288692625] [2023-11-19 08:00:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:59,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:00:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:00:59,471 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:00:59,649 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:00:59,650 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:00:59,650 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:00:59,650 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:00:59,650 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:00:59,651 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:59,651 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:00:59,651 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:00:59,651 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration1_Loop [2023-11-19 08:00:59,651 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:00:59,652 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:00:59,669 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:59,687 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:59,699 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:59,708 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:00:59,768 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:00:59,769 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:00:59,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:59,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:59,776 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:59,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-19 08:00:59,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:00:59,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:00:59,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:00:59,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4#1=0} Honda state: {ULTIMATE.start_main_#t~nondet4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:00:59,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-19 08:00:59,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:59,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:59,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:59,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-19 08:00:59,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:00:59,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:00:59,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:59,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:00:59,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:59,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:59,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-19 08:00:59,907 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:00:59,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:00,012 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:01:00,012 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=-2} Honda state: {ULTIMATE.start_main_~a~0#1=-2} Generalized eigenvectors: [{ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~a~0#1=-1}, {ULTIMATE.start_main_~a~0#1=0}] Lambdas: [4, 1, 10] Nus: [0, 1] [2023-11-19 08:01:00,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:00,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:00,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,040 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 08:01:00,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:01:00,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:00,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:00,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:00,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,102 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 08:01:00,105 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:01:00,105 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:00,140 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:01:00,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:00,161 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:00,161 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:00,161 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:00,161 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:00,161 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:01:00,161 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:00,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:00,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:00,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration1_Loop [2023-11-19 08:01:00,162 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:00,162 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:00,163 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:00,174 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:00,178 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:00,186 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:00,230 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:00,235 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:01:00,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:00,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 08:01:00,247 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:00,260 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:00,260 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:00,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:00,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:00,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:00,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:00,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:00,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:00,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:00,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:00,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,325 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:00,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:00,338 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:00,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:00,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:00,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:00,342 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:00,342 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:00,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 08:01:00,354 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:00,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-19 08:01:00,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:00,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,376 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:00,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:00,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:00,398 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:00,398 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:00,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:00,400 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:00,400 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:00,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 08:01:00,417 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:01:00,421 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 08:01:00,421 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 08:01:00,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:00,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:00,474 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:00,499 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:01:00,500 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 08:01:00,500 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:01:00,500 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-19 08:01:00,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 08:01:00,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:00,532 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 08:01:00,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:00,602 WARN L260 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:00,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:00,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:01:00,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:00,693 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 08:01:00,695 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,820 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 88 transitions. Complement of second has 12 states. [2023-11-19 08:01:00,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2023-11-19 08:01:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 53 transitions. [2023-11-19 08:01:00,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 53 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-19 08:01:00,830 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:00,830 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 53 transitions. Stem has 6 letters. Loop has 4 letters. [2023-11-19 08:01:00,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:00,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 53 transitions. Stem has 2 letters. Loop has 8 letters. [2023-11-19 08:01:00,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:00,832 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 88 transitions. [2023-11-19 08:01:00,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 08:01:00,841 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 35 states and 51 transitions. [2023-11-19 08:01:00,842 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-19 08:01:00,842 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2023-11-19 08:01:00,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 51 transitions. [2023-11-19 08:01:00,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:01:00,843 INFO L218 hiAutomatonCegarLoop]: Abstraction has 35 states and 51 transitions. [2023-11-19 08:01:00,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 51 transitions. [2023-11-19 08:01:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 21. [2023-11-19 08:01:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2023-11-19 08:01:00,872 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 30 transitions. [2023-11-19 08:01:00,872 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2023-11-19 08:01:00,872 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 08:01:00,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2023-11-19 08:01:00,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 08:01:00,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:00,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:00,874 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 08:01:00,874 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-11-19 08:01:00,874 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_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~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_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 144#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 128#L18 [2023-11-19 08:01:00,874 INFO L750 eck$LassoCheckResult]: Loop: 128#L18 assume main_~a~0#1 > 0; 130#L19 assume 0 == main_~x~0#1 || 0 == main_~a~0#1;main_#t~nondet3#1 := 0; 125#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 134#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 128#L18 [2023-11-19 08:01:00,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-19 08:01:00,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665683550] [2023-11-19 08:01:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:00,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1357749, now seen corresponding path program 1 times [2023-11-19 08:01:00,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790272132] [2023-11-19 08:01:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:00,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790272132] [2023-11-19 08:01:00,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790272132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:00,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173041532] [2023-11-19 08:01:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:00,945 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 08:01:00,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:00,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:00,950 INFO L87 Difference]: Start difference. First operand 21 states and 30 transitions. cyclomatic complexity: 11 Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:00,974 INFO L93 Difference]: Finished difference Result 25 states and 32 transitions. [2023-11-19 08:01:00,974 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 32 transitions. [2023-11-19 08:01:00,975 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 08:01:00,976 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 21 states and 28 transitions. [2023-11-19 08:01:00,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-11-19 08:01:00,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-19 08:01:00,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2023-11-19 08:01:00,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:01:00,977 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-11-19 08:01:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2023-11-19 08:01:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-19 08:01:00,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 28 transitions. [2023-11-19 08:01:00,979 INFO L240 hiAutomatonCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-11-19 08:01:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:01:00,981 INFO L428 stractBuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2023-11-19 08:01:00,981 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 08:01:00,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 28 transitions. [2023-11-19 08:01:00,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 08:01:00,982 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:00,982 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:00,982 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 08:01:00,982 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-19 08:01:00,983 INFO L748 eck$LassoCheckResult]: Stem: 192#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 193#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~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_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 197#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 181#L18 [2023-11-19 08:01:00,983 INFO L750 eck$LassoCheckResult]: Loop: 181#L18 assume !(main_~a~0#1 > 0); 182#L21 assume !(0 == main_~x~0#1 || 0 == main_~x~0#1 - 1); 189#L21-2 assume !(main_~x~0#1 == main_~x~0#1 - 1);assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 <= main_~x~0#1 - 1;assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 >= 0;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 > main_~x~0#1 + (main_~x~0#1 - 1);assume main_#t~nondet4#1 >= -2147483648; 194#L21-4 main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 187#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 181#L18 [2023-11-19 08:01:00,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,983 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 2 times [2023-11-19 08:01:00,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899142007] [2023-11-19 08:01:00,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:00,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:00,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:00,992 INFO L85 PathProgramCache]: Analyzing trace with hash 55508611, now seen corresponding path program 1 times [2023-11-19 08:01:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:00,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636623866] [2023-11-19 08:01:00,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:00,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,010 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,018 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:01,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 309353020, now seen corresponding path program 1 times [2023-11-19 08:01:01,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480412328] [2023-11-19 08:01:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:01,113 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:01,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:01,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:01,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:01,114 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:01:01,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:01,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:01,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration3_Loop [2023-11-19 08:01:01,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:01,115 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:01,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,128 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,135 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,175 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:01,175 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:01:01,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,184 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:01:01,184 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:01,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 08:01:01,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:01,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,241 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:01:01,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:01,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 08:01:01,347 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:01:01,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:01,350 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:01,351 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:01,351 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:01,351 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:01,351 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:01:01,351 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,351 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:01,351 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:01,351 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration3_Loop [2023-11-19 08:01:01,351 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:01,351 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:01,353 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,366 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,369 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,414 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:01,415 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:01:01,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,424 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:01,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 08:01:01,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:01,447 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:01,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:01,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:01,447 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:01,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:01,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:01,468 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:01:01,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:01,475 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-19 08:01:01,475 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 08:01:01,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,481 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,483 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:01:01,483 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 08:01:01,483 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:01:01,484 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-19 08:01:01,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 08:01:01,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:01,507 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 08:01:01,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:01,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:01,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:01,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:01,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:01,641 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 08:01:01,642 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 08:01:01,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 28 transitions. cyclomatic complexity: 9. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 56 states and 74 transitions. Complement of second has 9 states. [2023-11-19 08:01:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 08:01:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 08:01:01,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2023-11-19 08:01:01,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 3 letters. Loop has 5 letters. [2023-11-19 08:01:01,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:01,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 8 letters. Loop has 5 letters. [2023-11-19 08:01:01,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:01,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 3 letters. Loop has 10 letters. [2023-11-19 08:01:01,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:01,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 74 transitions. [2023-11-19 08:01:01,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 08:01:01,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 40 states and 54 transitions. [2023-11-19 08:01:01,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2023-11-19 08:01:01,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2023-11-19 08:01:01,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 54 transitions. [2023-11-19 08:01:01,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:01:01,734 INFO L218 hiAutomatonCegarLoop]: Abstraction has 40 states and 54 transitions. [2023-11-19 08:01:01,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 54 transitions. [2023-11-19 08:01:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2023-11-19 08:01:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 33 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 46 transitions. [2023-11-19 08:01:01,741 INFO L240 hiAutomatonCegarLoop]: Abstraction has 34 states and 46 transitions. [2023-11-19 08:01:01,741 INFO L428 stractBuchiCegarLoop]: Abstraction has 34 states and 46 transitions. [2023-11-19 08:01:01,741 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 08:01:01,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 46 transitions. [2023-11-19 08:01:01,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 08:01:01,744 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:01,744 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:01,745 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 08:01:01,745 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-19 08:01:01,745 INFO L748 eck$LassoCheckResult]: Stem: 320#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 321#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~0#1;havoc main_#t~nondet0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 314#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 310#L18 assume main_~a~0#1 > 0; 312#L19 [2023-11-19 08:01:01,746 INFO L750 eck$LassoCheckResult]: Loop: 312#L19 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 306#L19-2 assume main_~x~0#1 == main_~a~0#1;main_#t~nondet3#1 := main_~x~0#1; 307#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 324#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 329#L18 assume main_~a~0#1 > 0; 312#L19 [2023-11-19 08:01:01,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-19 08:01:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754842681] [2023-11-19 08:01:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,762 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:01,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,772 INFO L85 PathProgramCache]: Analyzing trace with hash 46856793, now seen corresponding path program 1 times [2023-11-19 08:01:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765317451] [2023-11-19 08:01:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,784 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:01,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash 585781524, now seen corresponding path program 1 times [2023-11-19 08:01:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:01,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364087371] [2023-11-19 08:01:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:01,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:01,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:01,810 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:01,849 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:01,849 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:01,850 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:01,850 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:01,850 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:01:01,850 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,850 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:01,850 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:01,850 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration4_Loop [2023-11-19 08:01:01,850 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:01,850 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:01,851 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,854 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,862 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:01,896 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:01,896 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:01:01,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,898 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:01:01,906 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:01,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 08:01:01,929 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:01:01,929 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:01:01,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:01,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:01,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:01,948 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:01,957 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:01:01,957 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:01,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 08:01:02,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:02,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,005 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 08:01:02,009 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:01:02,009 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:02,165 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:01:02,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:02,174 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:02,175 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:02,175 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:02,175 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:02,175 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:01:02,175 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,175 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:02,175 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:02,175 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration4_Loop [2023-11-19 08:01:02,175 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:02,175 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:02,176 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:02,179 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:02,182 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:02,228 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:02,228 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:01:02,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,230 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,237 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:02,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 08:01:02,250 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:02,250 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:02,250 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:02,250 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:02,250 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:02,251 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:02,251 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:02,262 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:02,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:02,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,287 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 08:01:02,289 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:02,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:02,298 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:02,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:02,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:02,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:02,300 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:02,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:02,308 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:02,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:02,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,324 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 08:01:02,329 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:02,339 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:02,339 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:02,339 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:02,339 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:02,339 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:02,341 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:02,341 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:02,374 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:01:02,381 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-19 08:01:02,381 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-11-19 08:01:02,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,388 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,390 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:01:02,390 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 08:01:02,390 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:01:02,390 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = 1*ULTIMATE.start_main_~a~0#1 Supporting invariants [] [2023-11-19 08:01:02,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 08:01:02,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:02,414 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 08:01:02,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:02,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:01:02,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:02,478 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 08:01:02,478 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 46 transitions. cyclomatic complexity: 16 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 08:01:02,515 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 46 transitions. cyclomatic complexity: 16. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 56 states and 76 transitions. Complement of second has 6 states. [2023-11-19 08:01:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 08:01:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 08:01:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2023-11-19 08:01:02,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 5 letters. [2023-11-19 08:01:02,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:02,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 9 letters. Loop has 5 letters. [2023-11-19 08:01:02,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:02,519 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 10 letters. [2023-11-19 08:01:02,519 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:02,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 76 transitions. [2023-11-19 08:01:02,527 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:01:02,528 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 56 states and 76 transitions. [2023-11-19 08:01:02,528 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-11-19 08:01:02,528 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2023-11-19 08:01:02,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 76 transitions. [2023-11-19 08:01:02,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:01:02,529 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 76 transitions. [2023-11-19 08:01:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 76 transitions. [2023-11-19 08:01:02,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2023-11-19 08:01:02,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 51 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2023-11-19 08:01:02,533 INFO L240 hiAutomatonCegarLoop]: Abstraction has 52 states and 72 transitions. [2023-11-19 08:01:02,533 INFO L428 stractBuchiCegarLoop]: Abstraction has 52 states and 72 transitions. [2023-11-19 08:01:02,533 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 08:01:02,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 72 transitions. [2023-11-19 08:01:02,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:01:02,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:02,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:02,534 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:01:02,534 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-19 08:01:02,534 INFO L748 eck$LassoCheckResult]: Stem: 460#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 461#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_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~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_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 453#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 449#L18 assume main_~a~0#1 > 0; 451#L19 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 445#L19-2 assume !(main_~x~0#1 == main_~a~0#1);assume (main_~x~0#1 < 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 <= main_~a~0#1;assume (main_~x~0#1 < 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 >= 0;assume (main_~x~0#1 >= 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 > main_~x~0#1 + main_~a~0#1;assume main_#t~nondet3#1 >= -2147483648; 446#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 464#L18-2 [2023-11-19 08:01:02,535 INFO L750 eck$LassoCheckResult]: Loop: 464#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 476#L18 assume !(main_~a~0#1 > 0); 456#L21 assume !(0 == main_~x~0#1 || 0 == main_~x~0#1 - 1); 457#L21-2 assume !(main_~x~0#1 == main_~x~0#1 - 1);assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 <= main_~x~0#1 - 1;assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 >= 0;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 > main_~x~0#1 + (main_~x~0#1 - 1);assume main_#t~nondet4#1 >= -2147483648; 462#L21-4 main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 464#L18-2 [2023-11-19 08:01:02,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1810663471, now seen corresponding path program 1 times [2023-11-19 08:01:02,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:02,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989923057] [2023-11-19 08:01:02,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:02,556 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:02,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:02,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,572 INFO L85 PathProgramCache]: Analyzing trace with hash 39654961, now seen corresponding path program 2 times [2023-11-19 08:01:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979650777] [2023-11-19 08:01:02,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:02,588 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:02,593 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:02,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1954252093, now seen corresponding path program 1 times [2023-11-19 08:01:02,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:02,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754191985] [2023-11-19 08:01:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:02,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:02,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754191985] [2023-11-19 08:01:02,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754191985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:02,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:02,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:01:02,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702273558] [2023-11-19 08:01:02,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:02,809 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:02,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:02,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:02,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:02,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:01:02,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:02,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:02,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration5_Loop [2023-11-19 08:01:02,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:02,811 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:02,812 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:02,822 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:02,824 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:02,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:02,881 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:01:02,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,882 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 08:01:02,887 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:01:02,887 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:02,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:02,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:02,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:02,939 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:02,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 08:01:02,945 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:01:02,945 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:03,025 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:01:03,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:03,037 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:03,037 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:03,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:03,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:03,037 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:01:03,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:03,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:03,037 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration5_Loop [2023-11-19 08:01:03,037 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:03,037 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:03,038 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:03,043 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:03,052 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:03,108 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:03,108 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:01:03,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:03,109 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:03,111 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:03,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:03,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:03,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:03,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:03,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:03,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:03,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:03,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 08:01:03,130 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:03,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:03,155 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:03,157 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:03,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:03,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:03,170 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:03,170 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:03,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:03,171 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:03,171 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:03,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 08:01:03,181 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:01:03,185 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 08:01:03,185 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 08:01:03,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:03,187 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:03,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 08:01:03,192 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:01:03,192 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 08:01:03,192 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:01:03,192 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-19 08:01:03,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:03,213 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 08:01:03,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:03,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:03,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:03,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:01:03,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:03,311 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 08:01:03,311 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 72 transitions. cyclomatic complexity: 26 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 08:01:03,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:03,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:03,436 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 72 transitions. cyclomatic complexity: 26. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Result 138 states and 191 transitions. Complement of second has 7 states. [2023-11-19 08:01:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 08:01:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 08:01:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2023-11-19 08:01:03,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 7 letters. Loop has 5 letters. [2023-11-19 08:01:03,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:03,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 12 letters. Loop has 5 letters. [2023-11-19 08:01:03,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:03,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 7 letters. Loop has 10 letters. [2023-11-19 08:01:03,439 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:03,439 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 191 transitions. [2023-11-19 08:01:03,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:01:03,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 89 states and 123 transitions. [2023-11-19 08:01:03,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-19 08:01:03,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-11-19 08:01:03,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 123 transitions. [2023-11-19 08:01:03,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:01:03,444 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 123 transitions. [2023-11-19 08:01:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 123 transitions. [2023-11-19 08:01:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 73. [2023-11-19 08:01:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.36986301369863) internal successors, (100), 72 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 100 transitions. [2023-11-19 08:01:03,451 INFO L240 hiAutomatonCegarLoop]: Abstraction has 73 states and 100 transitions. [2023-11-19 08:01:03,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:03,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:01:03,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:03,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:01:03,461 INFO L87 Difference]: Start difference. First operand 73 states and 100 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 08:01:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:03,592 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2023-11-19 08:01:03,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 146 transitions. [2023-11-19 08:01:03,598 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:01:03,603 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 66 states and 84 transitions. [2023-11-19 08:01:03,604 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-19 08:01:03,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-19 08:01:03,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 84 transitions. [2023-11-19 08:01:03,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 08:01:03,604 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 84 transitions. [2023-11-19 08:01:03,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 84 transitions. [2023-11-19 08:01:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 48. [2023-11-19 08:01:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 47 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:03,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-11-19 08:01:03,614 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-11-19 08:01:03,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:01:03,618 INFO L428 stractBuchiCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-11-19 08:01:03,621 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 08:01:03,621 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 62 transitions. [2023-11-19 08:01:03,622 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-11-19 08:01:03,622 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 08:01:03,622 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 08:01:03,622 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-19 08:01:03,623 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-19 08:01:03,623 INFO L748 eck$LassoCheckResult]: Stem: 909#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 910#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_#t~post2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~a~0#1, main_~x~0#1;havoc main_~a~0#1;havoc main_~x~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_~a~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 902#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 903#L18 assume main_~a~0#1 > 0; 915#L19 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 916#L19-2 assume !(main_~x~0#1 == main_~a~0#1);assume (main_~x~0#1 < 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 <= main_~a~0#1;assume (main_~x~0#1 < 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 >= 0;assume (main_~x~0#1 >= 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 > main_~x~0#1 + main_~a~0#1;assume main_#t~nondet3#1 >= -2147483648; 938#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 937#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 931#L18 assume main_~a~0#1 > 0; 930#L19 assume !(0 == main_~x~0#1 || 0 == main_~a~0#1); 929#L19-2 assume !(main_~x~0#1 == main_~a~0#1);assume (main_~x~0#1 < 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 <= main_~a~0#1;assume (main_~x~0#1 < 0 && main_~a~0#1 < 0) || main_#t~nondet3#1 >= 0;assume (main_~x~0#1 >= 0 && main_~a~0#1 >= 0) || main_#t~nondet3#1 > main_~x~0#1 + main_~a~0#1;assume main_#t~nondet3#1 >= -2147483648; 927#L19-4 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 923#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 924#L18 assume !(main_~a~0#1 > 0); 921#L21 assume 0 == main_~x~0#1 || 0 == main_~x~0#1 - 1;main_#t~nondet4#1 := 0; 920#L21-4 main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 918#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 898#L18 [2023-11-19 08:01:03,623 INFO L750 eck$LassoCheckResult]: Loop: 898#L18 assume !(main_~a~0#1 > 0); 899#L21 assume !(0 == main_~x~0#1 || 0 == main_~x~0#1 - 1); 906#L21-2 assume !(main_~x~0#1 == main_~x~0#1 - 1);assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 <= main_~x~0#1;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 <= main_~x~0#1 - 1;assume (main_~x~0#1 < 0 && main_~x~0#1 - 1 < 0) || main_#t~nondet4#1 >= 0;assume (main_~x~0#1 >= 0 && main_~x~0#1 - 1 >= 0) || main_#t~nondet4#1 > main_~x~0#1 + (main_~x~0#1 - 1);assume main_#t~nondet4#1 >= -2147483648; 911#L21-4 main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 913#L18-2 assume !!(main_~x~0#1 > 0);main_#t~post2#1 := main_~a~0#1;main_~a~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 898#L18 [2023-11-19 08:01:03,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:03,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1122541362, now seen corresponding path program 1 times [2023-11-19 08:01:03,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:03,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126586115] [2023-11-19 08:01:03,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:03,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-19 08:01:03,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:01:03,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126586115] [2023-11-19 08:01:03,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126586115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:01:03,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:01:03,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:01:03,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650451534] [2023-11-19 08:01:03,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:01:03,715 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-19 08:01:03,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash 55508611, now seen corresponding path program 3 times [2023-11-19 08:01:03,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:01:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334212316] [2023-11-19 08:01:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:01:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:01:03,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:03,728 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 08:01:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 08:01:03,739 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 08:01:03,809 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:03,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:03,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:03,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:03,809 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 08:01:03,809 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,809 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:03,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:03,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration6_Loop [2023-11-19 08:01:03,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:03,810 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:03,813 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:03,821 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:03,823 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:03,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:03,881 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 08:01:03,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:03,883 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:03,885 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:01:03,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:03,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 08:01:03,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2023-11-19 08:01:03,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:03,911 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:03,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 08:01:03,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:01:03,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:03,939 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:01:03,939 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~a~0#1=0} Honda state: {ULTIMATE.start_main_~a~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~a~0#1=0}, {ULTIMATE.start_main_~a~0#1=-1}] Lambdas: [12, 4, 1] Nus: [0, 0] [2023-11-19 08:01:03,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-19 08:01:03,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:03,961 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:03,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 08:01:03,962 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:01:03,962 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:03,979 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 08:01:03,979 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 08:01:03,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-19 08:01:03,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:03,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:03,992 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:03,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 08:01:03,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 08:01:03,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:04,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-19 08:01:04,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:04,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:04,025 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:04,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 08:01:04,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 08:01:04,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 08:01:04,112 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 08:01:04,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:04,115 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 08:01:04,115 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 08:01:04,115 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 08:01:04,115 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 08:01:04,115 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 08:01:04,116 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:04,116 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 08:01:04,116 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 08:01:04,116 INFO L133 ssoRankerPreferences]: Filename of dumped script: and-06.c_Iteration6_Loop [2023-11-19 08:01:04,116 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 08:01:04,116 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 08:01:04,117 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:04,130 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:04,133 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 08:01:04,182 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 08:01:04,182 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 08:01:04,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:04,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:04,183 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:04,189 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:04,203 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:04,203 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:04,203 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:04,203 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:04,203 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:04,205 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:04,205 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:04,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 08:01:04,220 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:04,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:04,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:04,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:04,244 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:04,249 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:04,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:04,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:04,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:04,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:04,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:04,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:04,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:04,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 08:01:04,274 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 08:01:04,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2023-11-19 08:01:04,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:04,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:04,294 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:04,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 08:01:04,295 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 08:01:04,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 08:01:04,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 08:01:04,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 08:01:04,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 08:01:04,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 08:01:04,313 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 08:01:04,313 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 08:01:04,320 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 08:01:04,349 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 08:01:04,349 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-19 08:01:04,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 08:01:04,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:01:04,353 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 08:01:04,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 08:01:04,356 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 08:01:04,356 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 08:01:04,357 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 08:01:04,357 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-11-19 08:01:04,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2023-11-19 08:01:04,374 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 08:01:04,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:04,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:04,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:04,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:04,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:04,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:04,516 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 08:01:04,517 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:04,592 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 55 states and 71 transitions. Complement of second has 9 states. [2023-11-19 08:01:04,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 08:01:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2023-11-19 08:01:04,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 17 letters. Loop has 5 letters. [2023-11-19 08:01:04,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:04,595 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 08:01:04,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:04,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:04,635 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:04,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:04,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:04,752 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2023-11-19 08:01:04,752 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:04,823 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 55 states and 71 transitions. Complement of second has 9 states. [2023-11-19 08:01:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 08:01:04,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2023-11-19 08:01:04,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 17 letters. Loop has 5 letters. [2023-11-19 08:01:04,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:04,829 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 08:01:04,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:01:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:04,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 08:01:04,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:01:04,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:01:04,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:01:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:01:04,976 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 3 loop predicates [2023-11-19 08:01:04,977 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:05,044 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 62 transitions. cyclomatic complexity: 19. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 82 states and 108 transitions. Complement of second has 8 states. [2023-11-19 08:01:05,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2023-11-19 08:01:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:01:05,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2023-11-19 08:01:05,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 17 letters. Loop has 5 letters. [2023-11-19 08:01:05,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:05,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 22 letters. Loop has 5 letters. [2023-11-19 08:01:05,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:05,053 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 17 letters. Loop has 10 letters. [2023-11-19 08:01:05,055 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 08:01:05,056 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 82 states and 108 transitions. [2023-11-19 08:01:05,057 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 08:01:05,057 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 82 states to 0 states and 0 transitions. [2023-11-19 08:01:05,058 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 08:01:05,058 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 08:01:05,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 08:01:05,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:05,058 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:05,058 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:05,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:01:05,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:01:05,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:01:05,059 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 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 08:01:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:01:05,060 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2023-11-19 08:01:05,060 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2023-11-19 08:01:05,060 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 08:01:05,060 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 08:01:05,060 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 08:01:05,060 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 08:01:05,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 08:01:05,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:01:05,061 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:05,061 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:01:05,062 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:01:05,062 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 08:01:05,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:01:05,063 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 08:01:05,063 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 08:01:05,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 08:01:05 BoogieIcfgContainer [2023-11-19 08:01:05,073 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 08:01:05,074 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:01:05,074 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:01:05,074 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:01:05,075 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:59" (3/4) ... [2023-11-19 08:01:05,079 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 08:01:05,081 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:01:05,081 INFO L158 Benchmark]: Toolchain (without parser) took 6761.51ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 121.8MB in the beginning and 80.7MB in the end (delta: 41.1MB). Peak memory consumption was 77.3MB. Max. memory is 16.1GB. [2023-11-19 08:01:05,082 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 111.1MB. Free memory was 62.1MB in the beginning and 62.0MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:05,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.68ms. Allocated memory is still 161.5MB. Free memory was 121.8MB in the beginning and 112.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:01:05,085 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.62ms. Allocated memory is still 161.5MB. Free memory was 112.1MB in the beginning and 110.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:01:05,085 INFO L158 Benchmark]: Boogie Preprocessor took 47.56ms. Allocated memory is still 161.5MB. Free memory was 110.9MB in the beginning and 109.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:01:05,086 INFO L158 Benchmark]: RCFGBuilder took 386.87ms. Allocated memory is still 161.5MB. Free memory was 109.6MB in the beginning and 100.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-19 08:01:05,086 INFO L158 Benchmark]: BuchiAutomizer took 5974.79ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 100.4MB in the beginning and 81.7MB in the end (delta: 18.6MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2023-11-19 08:01:05,087 INFO L158 Benchmark]: Witness Printer took 6.92ms. Allocated memory is still 195.0MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:01:05,089 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 111.1MB. Free memory was 62.1MB in the beginning and 62.0MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.68ms. Allocated memory is still 161.5MB. Free memory was 121.8MB in the beginning and 112.1MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.62ms. Allocated memory is still 161.5MB. Free memory was 112.1MB in the beginning and 110.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.56ms. Allocated memory is still 161.5MB. Free memory was 110.9MB in the beginning and 109.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 386.87ms. Allocated memory is still 161.5MB. Free memory was 109.6MB in the beginning and 100.4MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5974.79ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 100.4MB in the beginning and 81.7MB in the end (delta: 18.6MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Witness Printer took 6.92ms. Allocated memory is still 195.0MB. Free memory was 81.7MB in the beginning and 80.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 7 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function a and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 5 locations. 3 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.8s and 7 iterations. TraceHistogramMax:4. Analysis of lassos took 3.9s. Construction of modules took 0.2s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 58 StatesRemovedByMinimization, 5 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 [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 146 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 139 mSDsluCounter, 170 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 259 IncrementalHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 96 mSDtfsCounter, 259 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT3 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp70 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq151 hnf93 smp95 dnf100 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s 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 08:01:05,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-19 08:01:05,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c928294c-1156-448f-9a34-f71f210b373a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE