./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Flip2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e7bb482b 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_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Flip2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:07:30,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:07:30,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-06 22:07:30,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:07:30,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:07:30,776 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:07:30,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:07:30,777 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:07:30,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:07:30,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:07:30,784 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:07:30,784 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-06 22:07:30,784 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-06 22:07:30,786 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-06 22:07:30,787 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-06 22:07:30,787 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-06 22:07:30,787 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-06 22:07:30,788 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:07:30,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-06 22:07:30,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:07:30,790 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:07:30,790 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-06 22:07:30,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-06 22:07:30,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-06 22:07:30,791 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:07:30,802 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:07:30,802 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-06 22:07:30,803 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:07:30,803 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:07:30,804 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:07:30,805 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:07:30,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:07:30,806 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-06 22:07:30,806 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_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac [2023-11-06 22:07:31,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:07:31,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:07:31,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:07:31,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:07:31,138 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:07:31,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/termination-restricted-15/Flip2.c [2023-11-06 22:07:34,284 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:07:34,496 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:07:34,497 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/sv-benchmarks/c/termination-restricted-15/Flip2.c [2023-11-06 22:07:34,505 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/data/121a9bf59/e7322f28c6eb4b09a28c9723d933fb15/FLAG5931d1e58 [2023-11-06 22:07:34,529 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/data/121a9bf59/e7322f28c6eb4b09a28c9723d933fb15 [2023-11-06 22:07:34,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:07:34,538 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:07:34,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:34,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:07:34,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:07:34,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,551 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d39f3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34, skipping insertion in model container [2023-11-06 22:07:34,551 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,578 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:07:34,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:34,740 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:07:34,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:07:34,772 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:07:34,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34 WrapperNode [2023-11-06 22:07:34,772 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:07:34,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:34,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:07:34,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:07:34,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,810 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-11-06 22:07:34,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:07:34,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:07:34,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:07:34,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:07:34,823 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,828 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,834 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:07:34,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:07:34,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:07:34,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:07:34,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (1/1) ... [2023-11-06 22:07:34,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:34,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:34,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:34,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-06 22:07:34,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:07:34,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:07:35,002 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:07:35,005 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:07:35,095 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:07:35,102 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:07:35,102 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:07:35,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:35 BoogieIcfgContainer [2023-11-06 22:07:35,104 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:07:35,106 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-06 22:07:35,106 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-06 22:07:35,110 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-06 22:07:35,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:07:35,111 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.11 10:07:34" (1/3) ... [2023-11-06 22:07:35,113 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c80cf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:07:35, skipping insertion in model container [2023-11-06 22:07:35,113 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:07:35,113 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:07:34" (2/3) ... [2023-11-06 22:07:35,114 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4c80cf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.11 10:07:35, skipping insertion in model container [2023-11-06 22:07:35,114 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-06 22:07:35,114 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:35" (3/3) ... [2023-11-06 22:07:35,116 INFO L332 chiAutomizerObserver]: Analyzing ICFG Flip2.c [2023-11-06 22:07:35,208 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-06 22:07:35,208 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-06 22:07:35,208 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-06 22:07:35,208 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-06 22:07:35,208 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-06 22:07:35,208 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-06 22:07:35,209 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-06 22:07:35,228 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-06 22:07:35,232 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:35,249 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 22:07:35,249 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:35,250 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:35,257 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:07:35,257 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 22:07:35,257 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-06 22:07:35,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:35,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-06 22:07:35,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:35,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:35,260 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-06 22:07:35,260 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 22:07:35,269 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 2#L19-2true [2023-11-06 22:07:35,269 INFO L750 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 9#L14true assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 2#L19-2true [2023-11-06 22:07:35,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-06 22:07:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:35,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900469482] [2023-11-06 22:07:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:35,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:35,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:35,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:35,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2023-11-06 22:07:35,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:35,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361914432] [2023-11-06 22:07:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:35,408 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:35,416 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:35,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:35,419 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-06 22:07:35,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:35,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599689424] [2023-11-06 22:07:35,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:35,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:35,431 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:35,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:35,561 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:35,562 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:35,562 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:35,562 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:35,563 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:07:35,563 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:35,563 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:35,563 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:35,564 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2023-11-06 22:07:35,564 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:35,564 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:35,587 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:35,603 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:35,612 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:35,724 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:35,725 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:07:35,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:35,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:35,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:35,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:35,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:35,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-06 22:07:35,772 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:07:35,772 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:07:35,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-11-06 22:07:35,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:35,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:35,789 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:35,799 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:35,800 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:35,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-06 22:07:35,824 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:07:35,824 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:07:35,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:35,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:35,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:35,830 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:35,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-06 22:07:35,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:35,834 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:35,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:35,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:35,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:35,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:35,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-06 22:07:35,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:07:35,888 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:36,125 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:07:36,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:36,129 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:36,129 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:36,130 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:36,130 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:36,130 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:07:36,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:36,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:36,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:36,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2023-11-06 22:07:36,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:36,131 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:36,133 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:36,138 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:36,142 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:36,251 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:36,256 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:07:36,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:36,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:36,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:36,270 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 [2023-11-06 22:07:36,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-06 22:07:36,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:36,285 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:36,285 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:36,285 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:36,291 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:07:36,291 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:07:36,305 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:07:36,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:36,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:36,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:36,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:36,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-06 22:07:36,321 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 [2023-11-06 22:07:36,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:36,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:36,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:36,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:36,337 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:07:36,337 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:07:36,352 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:07:36,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:36,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:36,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:36,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:36,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-06 22:07:36,368 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 [2023-11-06 22:07:36,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:36,381 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:07:36,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:36,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:36,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:36,385 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:07:36,385 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:07:36,400 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:07:36,414 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:07:36,414 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:07:36,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:36,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:36,451 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:36,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-06 22:07:36,463 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:07:36,463 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:07:36,464 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:07:36,464 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2023-11-06 22:07:36,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-11-06 22:07:36,470 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:07:36,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:36,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:07:36,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:36,544 WARN L260 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:07:36,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:36,658 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 [2023-11-06 22:07:36,660 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:36,743 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 27 states and 41 transitions. Complement of second has 8 states. [2023-11-06 22:07:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-06 22:07:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2023-11-06 22:07:36,756 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 2 letters. [2023-11-06 22:07:36,757 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:36,757 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-06 22:07:36,758 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:36,758 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 2 letters. Loop has 4 letters. [2023-11-06 22:07:36,759 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:36,760 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 41 transitions. [2023-11-06 22:07:36,768 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2023-11-06 22:07:36,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 14 states and 20 transitions. [2023-11-06 22:07:36,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-11-06 22:07:36,774 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-06 22:07:36,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2023-11-06 22:07:36,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:07:36,776 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2023-11-06 22:07:36,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2023-11-06 22:07:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-11-06 22:07:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 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) [2023-11-06 22:07:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2023-11-06 22:07:36,809 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-11-06 22:07:36,810 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-11-06 22:07:36,810 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-06 22:07:36,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2023-11-06 22:07:36,812 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2023-11-06 22:07:36,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:36,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:36,813 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-06 22:07:36,814 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 22:07:36,814 INFO L748 eck$LassoCheckResult]: Stem: 79#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 80#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_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 81#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 76#L14 [2023-11-06 22:07:36,814 INFO L750 eck$LassoCheckResult]: Loop: 76#L14 assume !(main_~i~0#1 < main_~j~0#1); 85#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 75#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 76#L14 [2023-11-06 22:07:36,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2023-11-06 22:07:36,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:36,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491961013] [2023-11-06 22:07:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:36,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:36,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:36,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:36,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2023-11-06 22:07:36,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:36,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62514011] [2023-11-06 22:07:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:36,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:36,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:36,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:36,890 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:36,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:36,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash 889694462, now seen corresponding path program 1 times [2023-11-06 22:07:36,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:36,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110034209] [2023-11-06 22:07:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:36,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:36,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:36,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:36,986 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:36,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:36,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:36,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:36,987 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:07:36,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:36,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:36,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:36,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2023-11-06 22:07:36,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:36,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:36,990 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:36,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:36,998 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:37,049 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:37,049 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:07:37,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,051 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-06 22:07:37,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:37,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:37,085 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:07:37,085 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:07:37,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:37,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,100 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-06 22:07:37,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:37,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:37,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:07:37,138 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:07:37,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:37,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,155 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:37,160 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:37,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-06 22:07:37,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:37,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,194 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:07:37,204 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:37,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-06 22:07:37,322 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:07:37,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:37,326 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:37,326 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:37,326 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:37,326 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:37,327 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:07:37,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:37,327 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:37,327 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2023-11-06 22:07:37,327 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:37,327 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:37,329 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:37,333 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:37,336 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:37,395 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:37,396 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:07:37,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,397 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,414 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 [2023-11-06 22:07:37,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-06 22:07:37,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:37,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:37,428 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:37,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:37,431 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:07:37,431 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:07:37,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:07:37,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:37,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-06 22:07:37,448 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 [2023-11-06 22:07:37,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:37,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:37,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:37,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:37,462 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:07:37,462 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:07:37,475 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:07:37,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:37,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,486 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,494 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 [2023-11-06 22:07:37,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-06 22:07:37,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:37,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:07:37,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:37,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:37,509 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:37,510 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:07:37,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:07:37,521 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:07:37,527 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-06 22:07:37,528 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-11-06 22:07:37,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,529 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,559 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:07:37,559 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:07:37,559 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:07:37,559 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-06 22:07:37,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-06 22:07:37,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:37,569 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:07:37,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:37,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:07:37,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:37,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:37,606 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:07:37,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:37,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:37,650 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 [2023-11-06 22:07:37,650 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 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) [2023-11-06 22:07:37,692 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. 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 35 states and 50 transitions. Complement of second has 7 states. [2023-11-06 22:07:37,692 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 [2023-11-06 22:07:37,694 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) [2023-11-06 22:07:37,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-11-06 22:07:37,696 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 3 letters. [2023-11-06 22:07:37,697 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:37,697 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2023-11-06 22:07:37,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:37,698 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 6 letters. [2023-11-06 22:07:37,698 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:37,698 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2023-11-06 22:07:37,706 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2023-11-06 22:07:37,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 31 states and 45 transitions. [2023-11-06 22:07:37,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2023-11-06 22:07:37,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-11-06 22:07:37,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 45 transitions. [2023-11-06 22:07:37,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:07:37,710 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 45 transitions. [2023-11-06 22:07:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 45 transitions. [2023-11-06 22:07:37,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2023-11-06 22:07:37,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 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) [2023-11-06 22:07:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2023-11-06 22:07:37,718 INFO L240 hiAutomatonCegarLoop]: Abstraction has 25 states and 38 transitions. [2023-11-06 22:07:37,719 INFO L428 stractBuchiCegarLoop]: Abstraction has 25 states and 38 transitions. [2023-11-06 22:07:37,719 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-06 22:07:37,719 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 38 transitions. [2023-11-06 22:07:37,721 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2023-11-06 22:07:37,724 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:37,725 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:37,725 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-06 22:07:37,725 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 22:07:37,725 INFO L748 eck$LassoCheckResult]: Stem: 168#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 169#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 173#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 177#L14 assume !(main_~i~0#1 < main_~j~0#1); 170#L19 [2023-11-06 22:07:37,726 INFO L750 eck$LassoCheckResult]: Loop: 170#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 164#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 165#L14 assume !(main_~i~0#1 < main_~j~0#1); 170#L19 [2023-11-06 22:07:37,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2023-11-06 22:07:37,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:37,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772340030] [2023-11-06 22:07:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:37,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:37,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:37,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:37,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2023-11-06 22:07:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:37,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356621930] [2023-11-06 22:07:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:37,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:37,751 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:37,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2023-11-06 22:07:37,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:37,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413335901] [2023-11-06 22:07:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:37,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:37,759 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:37,765 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:37,794 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:37,794 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:37,794 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:37,794 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:37,795 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:07:37,795 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,795 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:37,795 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:37,795 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2023-11-06 22:07:37,795 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:37,795 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:37,796 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:37,805 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:37,808 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:37,858 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:37,858 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:07:37,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,860 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,864 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:37,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:37,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-06 22:07:37,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:37,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:37,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:37,911 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:37,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:07:37,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:37,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-06 22:07:38,100 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:07:38,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:38,104 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:38,104 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:38,104 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:38,105 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:38,105 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:07:38,105 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:38,105 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:38,105 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:38,105 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2023-11-06 22:07:38,105 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:38,105 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:38,106 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,122 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,125 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,171 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:38,171 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:07:38,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:38,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:38,173 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:38,194 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 [2023-11-06 22:07:38,206 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:38,206 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:07:38,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:38,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:38,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:38,208 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:07:38,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:07:38,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-06 22:07:38,228 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:07:38,233 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-06 22:07:38,233 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:07:38,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:38,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:38,240 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:38,246 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:07:38,246 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:07:38,247 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:07:38,247 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2023-11-06 22:07:38,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-06 22:07:38,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:38,257 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:07:38,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:38,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:07:38,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:38,294 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:07:38,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:38,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:38,343 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 [2023-11-06 22:07:38,344 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:38,378 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 92 transitions. Complement of second has 5 states. [2023-11-06 22:07:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 22:07:38,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:38,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2023-11-06 22:07:38,383 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2023-11-06 22:07:38,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:38,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-06 22:07:38,385 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:38,385 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2023-11-06 22:07:38,386 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:38,386 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 92 transitions. [2023-11-06 22:07:38,388 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2023-11-06 22:07:38,391 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 56 states and 81 transitions. [2023-11-06 22:07:38,392 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2023-11-06 22:07:38,392 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2023-11-06 22:07:38,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2023-11-06 22:07:38,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:07:38,392 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 81 transitions. [2023-11-06 22:07:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2023-11-06 22:07:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2023-11-06 22:07:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 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) [2023-11-06 22:07:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions. [2023-11-06 22:07:38,403 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 61 transitions. [2023-11-06 22:07:38,403 INFO L428 stractBuchiCegarLoop]: Abstraction has 42 states and 61 transitions. [2023-11-06 22:07:38,403 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-06 22:07:38,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 61 transitions. [2023-11-06 22:07:38,407 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2023-11-06 22:07:38,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:38,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:38,409 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:07:38,409 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-06 22:07:38,410 INFO L748 eck$LassoCheckResult]: Stem: 297#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 298#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_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 302#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 324#L14 assume !(main_~i~0#1 < main_~j~0#1); 299#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 300#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 310#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 308#L19-2 [2023-11-06 22:07:38,410 INFO L750 eck$LassoCheckResult]: Loop: 308#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 319#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 308#L19-2 [2023-11-06 22:07:38,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2023-11-06 22:07:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548452272] [2023-11-06 22:07:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:38,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:38,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548452272] [2023-11-06 22:07:38,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548452272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:38,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:38,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:07:38,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878835767] [2023-11-06 22:07:38,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:38,496 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:07:38,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:38,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2023-11-06 22:07:38,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:38,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437889751] [2023-11-06 22:07:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:38,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:38,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:38,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:38,547 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:38,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:38,548 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:38,548 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:38,548 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:07:38,548 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:38,548 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:38,548 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:38,549 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2023-11-06 22:07:38,549 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:38,549 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:38,550 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,562 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,565 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,626 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:38,627 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:07:38,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:38,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:38,628 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:38,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:38,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:38,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-06 22:07:38,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:38,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:38,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:38,693 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:38,696 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:07:38,696 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:38,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-06 22:07:38,885 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:07:38,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:38,889 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:38,889 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:38,889 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:38,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:38,890 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:07:38,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:38,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:38,890 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:38,890 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2023-11-06 22:07:38,890 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:38,890 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:38,892 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,905 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,916 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:38,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-06 22:07:38,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-11-06 22:07:39,001 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:39,002 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:07:39,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,004 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,014 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 [2023-11-06 22:07:39,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-06 22:07:39,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:39,027 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:07:39,027 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:39,027 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:39,027 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:39,030 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:07:39,030 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:07:39,056 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:07:39,061 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-06 22:07:39,061 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-11-06 22:07:39,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,062 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,066 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:07:39,066 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:07:39,066 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:07:39,066 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2023-11-06 22:07:39,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-06 22:07:39,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:39,076 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:07:39,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:39,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:39,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:07:39,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:39,136 WARN L260 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:07:39,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:39,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:39,160 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 [2023-11-06 22:07:39,160 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:39,187 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 74 states and 105 transitions. Complement of second has 7 states. [2023-11-06 22:07:39,190 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 [2023-11-06 22:07:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2023-11-06 22:07:39,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2023-11-06 22:07:39,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:39,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2023-11-06 22:07:39,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:39,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2023-11-06 22:07:39,193 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:39,193 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 105 transitions. [2023-11-06 22:07:39,202 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2023-11-06 22:07:39,203 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 58 states and 84 transitions. [2023-11-06 22:07:39,203 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2023-11-06 22:07:39,203 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2023-11-06 22:07:39,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 84 transitions. [2023-11-06 22:07:39,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:07:39,204 INFO L218 hiAutomatonCegarLoop]: Abstraction has 58 states and 84 transitions. [2023-11-06 22:07:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 84 transitions. [2023-11-06 22:07:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2023-11-06 22:07:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 42 states have internal predecessors, (63), 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) [2023-11-06 22:07:39,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2023-11-06 22:07:39,216 INFO L240 hiAutomatonCegarLoop]: Abstraction has 43 states and 63 transitions. [2023-11-06 22:07:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:39,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:39,221 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:39,239 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2023-11-06 22:07:39,239 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 69 transitions. [2023-11-06 22:07:39,240 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2023-11-06 22:07:39,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 45 states and 62 transitions. [2023-11-06 22:07:39,241 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2023-11-06 22:07:39,242 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2023-11-06 22:07:39,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 62 transitions. [2023-11-06 22:07:39,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:07:39,242 INFO L218 hiAutomatonCegarLoop]: Abstraction has 45 states and 62 transitions. [2023-11-06 22:07:39,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 62 transitions. [2023-11-06 22:07:39,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2023-11-06 22:07:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 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) [2023-11-06 22:07:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2023-11-06 22:07:39,249 INFO L240 hiAutomatonCegarLoop]: Abstraction has 41 states and 58 transitions. [2023-11-06 22:07:39,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:39,251 INFO L428 stractBuchiCegarLoop]: Abstraction has 41 states and 58 transitions. [2023-11-06 22:07:39,251 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-06 22:07:39,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 58 transitions. [2023-11-06 22:07:39,252 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2023-11-06 22:07:39,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:39,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:39,256 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:07:39,256 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-06 22:07:39,256 INFO L748 eck$LassoCheckResult]: Stem: 555#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 556#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_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 560#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 566#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 590#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 561#L14 assume !(main_~i~0#1 < main_~j~0#1); 562#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 558#L19-2 [2023-11-06 22:07:39,256 INFO L750 eck$LassoCheckResult]: Loop: 558#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 589#L14 assume !(main_~i~0#1 < main_~j~0#1); 557#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 558#L19-2 [2023-11-06 22:07:39,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:39,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1810655530, now seen corresponding path program 1 times [2023-11-06 22:07:39,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:39,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775195556] [2023-11-06 22:07:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:39,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:39,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:07:39,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775195556] [2023-11-06 22:07:39,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775195556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:07:39,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:07:39,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:07:39,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156696038] [2023-11-06 22:07:39,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:07:39,331 INFO L753 eck$LassoCheckResult]: stem already infeasible [2023-11-06 22:07:39,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:39,332 INFO L85 PathProgramCache]: Analyzing trace with hash 40879, now seen corresponding path program 2 times [2023-11-06 22:07:39,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:39,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673904842] [2023-11-06 22:07:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:39,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:39,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:39,344 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:39,391 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:39,392 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:39,392 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:39,392 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:39,392 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-06 22:07:39,392 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,392 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:39,392 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:39,392 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2023-11-06 22:07:39,392 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:39,393 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:39,396 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:39,401 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:39,404 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:39,472 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:39,472 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-06 22:07:39,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,473 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:39,478 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:39,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-06 22:07:39,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:07:39,501 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:07:39,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:39,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,508 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:39,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:39,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-06 22:07:39,540 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-06 22:07:39,540 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-06 22:07:39,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:39,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,549 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-06 22:07:39,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:39,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-06 22:07:39,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:39,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,576 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-06 22:07:39,579 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-06 22:07:39,579 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-06 22:07:39,710 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-06 22:07:39,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:39,720 INFO L210 LassoAnalysis]: Preferences: [2023-11-06 22:07:39,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-06 22:07:39,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-06 22:07:39,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-06 22:07:39,721 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-06 22:07:39,721 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,721 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-06 22:07:39,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-06 22:07:39,721 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2023-11-06 22:07:39,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-06 22:07:39,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-06 22:07:39,722 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:39,727 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:39,732 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-06 22:07:39,791 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-06 22:07:39,791 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-06 22:07:39,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,797 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,802 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 [2023-11-06 22:07:39,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-06 22:07:39,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:39,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:39,817 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:39,817 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:39,820 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:07:39,820 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:07:39,836 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:07:39,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:39,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,846 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,852 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 [2023-11-06 22:07:39,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:39,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-06 22:07:39,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:39,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:39,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:39,867 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-11-06 22:07:39,868 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-11-06 22:07:39,884 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-06 22:07:39,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:39,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,894 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,898 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 [2023-11-06 22:07:39,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-06 22:07:39,911 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-06 22:07:39,911 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-06 22:07:39,912 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-06 22:07:39,912 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-06 22:07:39,912 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-06 22:07:39,913 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-06 22:07:39,913 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-06 22:07:39,928 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-06 22:07:39,945 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-11-06 22:07:39,945 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-11-06 22:07:39,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-06 22:07:39,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:07:39,947 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-06 22:07:39,953 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-06 22:07:39,953 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-06 22:07:39,953 INFO L513 LassoAnalysis]: Proved termination. [2023-11-06 22:07:39,954 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2023-11-06 22:07:39,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-06 22:07:39,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:39,964 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-06 22:07:39,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:39,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:07:39,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:07:40,014 WARN L260 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:07:40,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:07:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:07:40,045 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 [2023-11-06 22:07:40,046 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2023-11-06 22:07:40,085 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 74 states and 102 transitions. Complement of second has 5 states. [2023-11-06 22:07:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-06 22:07:40,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2023-11-06 22:07:40,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2023-11-06 22:07:40,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-06 22:07:40,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:40,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2023-11-06 22:07:40,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:40,093 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 6 letters. [2023-11-06 22:07:40,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-06 22:07:40,094 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 102 transitions. [2023-11-06 22:07:40,095 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2023-11-06 22:07:40,100 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 57 states and 79 transitions. [2023-11-06 22:07:40,100 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2023-11-06 22:07:40,101 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2023-11-06 22:07:40,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 79 transitions. [2023-11-06 22:07:40,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:07:40,102 INFO L218 hiAutomatonCegarLoop]: Abstraction has 57 states and 79 transitions. [2023-11-06 22:07:40,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 79 transitions. [2023-11-06 22:07:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2023-11-06 22:07:40,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 48 states have internal predecessors, (69), 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) [2023-11-06 22:07:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2023-11-06 22:07:40,115 INFO L240 hiAutomatonCegarLoop]: Abstraction has 49 states and 69 transitions. [2023-11-06 22:07:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:07:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:07:40,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:07:40,116 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:07:40,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:07:40,130 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2023-11-06 22:07:40,130 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 66 transitions. [2023-11-06 22:07:40,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-06 22:07:40,132 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 47 states and 61 transitions. [2023-11-06 22:07:40,132 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2023-11-06 22:07:40,132 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2023-11-06 22:07:40,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 61 transitions. [2023-11-06 22:07:40,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-06 22:07:40,132 INFO L218 hiAutomatonCegarLoop]: Abstraction has 47 states and 61 transitions. [2023-11-06 22:07:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 61 transitions. [2023-11-06 22:07:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2023-11-06 22:07:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 34 states have internal predecessors, (47), 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) [2023-11-06 22:07:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2023-11-06 22:07:40,136 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 47 transitions. [2023-11-06 22:07:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:07:40,137 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2023-11-06 22:07:40,137 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-06 22:07:40,137 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 47 transitions. [2023-11-06 22:07:40,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-06 22:07:40,138 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-06 22:07:40,138 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-06 22:07:40,138 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2023-11-06 22:07:40,138 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1] [2023-11-06 22:07:40,139 INFO L748 eck$LassoCheckResult]: Stem: 819#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 820#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_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;havoc main_#t~nondet0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;havoc main_#t~nondet1#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 825#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 832#L14 assume !(main_~i~0#1 < main_~j~0#1); 828#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 843#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 826#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 815#L19-2 [2023-11-06 22:07:40,139 INFO L750 eck$LassoCheckResult]: Loop: 815#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 816#L14 assume !(main_~i~0#1 < main_~j~0#1); 821#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 822#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 849#L14 assume !(main_~i~0#1 < main_~j~0#1); 846#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 847#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 848#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 815#L19-2 [2023-11-06 22:07:40,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:40,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724560, now seen corresponding path program 2 times [2023-11-06 22:07:40,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:40,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336445020] [2023-11-06 22:07:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:40,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:40,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:40,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2053356838, now seen corresponding path program 1 times [2023-11-06 22:07:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:40,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386485093] [2023-11-06 22:07:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:40,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:40,159 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:40,165 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:40,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:07:40,166 INFO L85 PathProgramCache]: Analyzing trace with hash 399570165, now seen corresponding path program 1 times [2023-11-06 22:07:40,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:07:40,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429497032] [2023-11-06 22:07:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:07:40,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:07:40,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:40,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:40,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:07:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:40,349 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:07:40,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:07:40,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.11 10:07:40 BoogieIcfgContainer [2023-11-06 22:07:40,386 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-06 22:07:40,387 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:07:40,387 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:07:40,387 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:07:40,388 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:07:35" (3/4) ... [2023-11-06 22:07:40,389 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-06 22:07:40,443 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:07:40,444 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:07:40,444 INFO L158 Benchmark]: Toolchain (without parser) took 5906.64ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 68.7MB in the beginning and 50.7MB in the end (delta: 18.0MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2023-11-06 22:07:40,445 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 77.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:40,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.49ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 59.1MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:07:40,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.03ms. Allocated memory is still 111.1MB. Free memory was 59.1MB in the beginning and 57.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:07:40,446 INFO L158 Benchmark]: Boogie Preprocessor took 24.99ms. Allocated memory is still 111.1MB. Free memory was 57.6MB in the beginning and 56.8MB in the end (delta: 863.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:07:40,447 INFO L158 Benchmark]: RCFGBuilder took 267.44ms. Allocated memory is still 111.1MB. Free memory was 56.5MB in the beginning and 48.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:07:40,447 INFO L158 Benchmark]: BuchiAutomizer took 5280.29ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 48.2MB in the beginning and 52.8MB in the end (delta: -4.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2023-11-06 22:07:40,448 INFO L158 Benchmark]: Witness Printer took 57.29ms. Allocated memory is still 138.4MB. Free memory was 52.8MB in the beginning and 50.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:07:40,450 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 82.2MB in the end (delta: 77.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 231.49ms. Allocated memory is still 111.1MB. Free memory was 68.4MB in the beginning and 59.1MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.03ms. Allocated memory is still 111.1MB. Free memory was 59.1MB in the beginning and 57.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.99ms. Allocated memory is still 111.1MB. Free memory was 57.6MB in the beginning and 56.8MB in the end (delta: 863.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 267.44ms. Allocated memory is still 111.1MB. Free memory was 56.5MB in the beginning and 48.4MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5280.29ms. Allocated memory was 111.1MB in the beginning and 138.4MB in the end (delta: 27.3MB). Free memory was 48.2MB in the beginning and 52.8MB in the end (delta: -4.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 57.29ms. Allocated memory is still 138.4MB. Free memory was 52.8MB in the beginning and 50.7MB in the end (delta: 2.1MB). 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 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function j and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function ((-1 * j) + i) and consists of 3 locations. One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 35 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.1s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 4.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 38 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf91 smp100 dnf100 smp100 tf109 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 VAL [t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2, t=0] [L14] COND FALSE !(i < j) VAL [i=2, j=2, t=0] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2, t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2, t=0] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1, t=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 VAL [t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=2, j=2, t=0] [L14] COND FALSE !(i < j) VAL [i=2, j=2, t=0] [L19] COND FALSE !(i > j) [L22] i = i-1 VAL [i=1, j=2, t=0] [L13] COND TRUE i > 0 && j > 0 VAL [i=1, j=2, t=0] [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t VAL [i=2, j=1, t=1] Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:07:40,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:40,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:07:40,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_635fe255-d11d-408c-8750-86cff517dce4/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)