./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-simple/nested_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-simple/nested_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:33,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:33,265 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-19 07:37:33,282 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:33,285 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:33,335 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:33,337 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:33,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:33,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:33,340 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:33,341 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:33,342 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-19 07:37:33,342 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-19 07:37:33,343 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-19 07:37:33,343 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-19 07:37:33,344 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-19 07:37:33,345 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-19 07:37:33,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:33,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-19 07:37:33,346 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:37:33,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:33,348 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:37:33,348 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:33,349 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-19 07:37:33,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-19 07:37:33,350 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-19 07:37:33,350 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:37:33,351 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:37:33,351 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:33,352 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-19 07:37:33,352 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:33,353 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:33,353 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:33,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:33,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:33,355 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-19 07:37:33,355 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_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a30debb45adf4eb2040807436dec0136066a492a6c11eb0dbebd1f179f328d9 [2023-11-19 07:37:33,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:33,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:33,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:33,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:33,742 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:33,764 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/loop-simple/nested_3.c [2023-11-19 07:37:37,130 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:37,487 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:37,488 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/sv-benchmarks/c/loop-simple/nested_3.c [2023-11-19 07:37:37,498 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/data/77573108e/b45f576165804e29aa55eb58bd514556/FLAGa0620237b [2023-11-19 07:37:37,520 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/data/77573108e/b45f576165804e29aa55eb58bd514556 [2023-11-19 07:37:37,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:37,531 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:37,533 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:37,534 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:37,541 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:37,542 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,543 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44229407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37, skipping insertion in model container [2023-11-19 07:37:37,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,574 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:37:37,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:37,806 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:37:37,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:37:37,842 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:37:37,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37 WrapperNode [2023-11-19 07:37:37,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:37,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:37,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:37:37,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:37:37,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,893 INFO L138 Inliner]: procedures = 10, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2023-11-19 07:37:37,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:37:37,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:37:37,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:37:37,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:37:37,906 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,910 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,922 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:37:37,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:37:37,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:37:37,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:37:37,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (1/1) ... [2023-11-19 07:37:37,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:37,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:37,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:38,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-19 07:37:38,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:37:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:37:38,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:37:38,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:37:38,116 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:37:38,119 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:37:38,321 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:37:38,329 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:37:38,329 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:37:38,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:38 BoogieIcfgContainer [2023-11-19 07:37:38,348 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:37:38,349 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-19 07:37:38,350 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-19 07:37:38,355 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-19 07:37:38,356 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:37:38,356 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 07:37:37" (1/3) ... [2023-11-19 07:37:38,357 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28c3a1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:37:38, skipping insertion in model container [2023-11-19 07:37:38,357 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:37:38,358 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:37" (2/3) ... [2023-11-19 07:37:38,358 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@28c3a1b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 07:37:38, skipping insertion in model container [2023-11-19 07:37:38,358 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-19 07:37:38,359 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:38" (3/3) ... [2023-11-19 07:37:38,360 INFO L332 chiAutomizerObserver]: Analyzing ICFG nested_3.c [2023-11-19 07:37:38,452 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-19 07:37:38,453 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-19 07:37:38,453 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-19 07:37:38,453 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-19 07:37:38,453 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-19 07:37:38,454 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-19 07:37:38,454 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-19 07:37:38,454 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-19 07:37:38,460 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:38,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-19 07:37:38,481 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:38,481 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:38,488 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:38,488 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:37:38,489 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-19 07:37:38,490 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:38,494 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-19 07:37:38,495 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:38,495 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:38,495 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:38,495 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-19 07:37:38,504 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 4#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 3#L21-3true [2023-11-19 07:37:38,505 INFO L750 eck$LassoCheckResult]: Loop: 3#L21-3true assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 11#L22-3true assume !(main_~b~0#1 < 6); 13#L21-2true main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 3#L21-3true [2023-11-19 07:37:38,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,512 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-19 07:37:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140913308] [2023-11-19 07:37:38,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:38,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:38,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:38,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,662 INFO L85 PathProgramCache]: Analyzing trace with hash 39933, now seen corresponding path program 1 times [2023-11-19 07:37:38,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769654365] [2023-11-19 07:37:38,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:38,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:38,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769654365] [2023-11-19 07:37:38,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769654365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:38,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:38,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:37:38,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531612434] [2023-11-19 07:37:38,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:38,769 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:38,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:38,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:38,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:38,814 INFO L87 Difference]: Start difference. First operand has 14 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:38,837 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2023-11-19 07:37:38,838 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 20 transitions. [2023-11-19 07:37:38,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2023-11-19 07:37:38,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 12 states and 15 transitions. [2023-11-19 07:37:38,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-19 07:37:38,845 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-11-19 07:37:38,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2023-11-19 07:37:38,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:38,846 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2023-11-19 07:37:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2023-11-19 07:37:38,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 9. [2023-11-19 07:37:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:38,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2023-11-19 07:37:38,873 INFO L240 hiAutomatonCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-19 07:37:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:38,878 INFO L428 stractBuchiCegarLoop]: Abstraction has 9 states and 11 transitions. [2023-11-19 07:37:38,878 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-19 07:37:38,878 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 11 transitions. [2023-11-19 07:37:38,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2023-11-19 07:37:38,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:38,879 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:38,880 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:38,880 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:37:38,880 INFO L748 eck$LassoCheckResult]: Stem: 44#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 45#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 40#L21-3 [2023-11-19 07:37:38,880 INFO L750 eck$LassoCheckResult]: Loop: 40#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 41#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 43#L23-3 assume !(main_~c~0#1 < 6); 47#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 48#L22-3 assume !(main_~b~0#1 < 6); 46#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 40#L21-3 [2023-11-19 07:37:38,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,881 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2023-11-19 07:37:38,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993421971] [2023-11-19 07:37:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:38,891 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:38,899 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:38,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1191164837, now seen corresponding path program 1 times [2023-11-19 07:37:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747873653] [2023-11-19 07:37:38,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:38,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:38,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747873653] [2023-11-19 07:37:38,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747873653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:37:38,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:37:38,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:37:38,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673770045] [2023-11-19 07:37:38,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:37:38,935 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:38,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:38,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:37:38,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:37:38,936 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. cyclomatic complexity: 3 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:38,951 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2023-11-19 07:37:38,951 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 13 transitions. [2023-11-19 07:37:38,952 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2023-11-19 07:37:38,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 13 transitions. [2023-11-19 07:37:38,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-11-19 07:37:38,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-11-19 07:37:38,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 13 transitions. [2023-11-19 07:37:38,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:38,954 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-11-19 07:37:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 13 transitions. [2023-11-19 07:37:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2023-11-19 07:37:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2023-11-19 07:37:38,956 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-19 07:37:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:37:38,957 INFO L428 stractBuchiCegarLoop]: Abstraction has 10 states and 12 transitions. [2023-11-19 07:37:38,958 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-19 07:37:38,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 12 transitions. [2023-11-19 07:37:38,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2023-11-19 07:37:38,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:38,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:38,959 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:38,959 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:38,960 INFO L748 eck$LassoCheckResult]: Stem: 70#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 71#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 66#L21-3 [2023-11-19 07:37:38,960 INFO L750 eck$LassoCheckResult]: Loop: 66#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 67#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 72#L23-3 assume !!(main_~c~0#1 < 6); 68#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 69#L23-3 assume !(main_~c~0#1 < 6); 74#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 75#L22-3 assume !(main_~b~0#1 < 6); 73#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 66#L21-3 [2023-11-19 07:37:38,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,961 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2023-11-19 07:37:38,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074639872] [2023-11-19 07:37:38,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:38,970 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:38,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:38,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:38,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1993060441, now seen corresponding path program 1 times [2023-11-19 07:37:38,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:38,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806205477] [2023-11-19 07:37:38,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:39,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:39,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:39,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806205477] [2023-11-19 07:37:39,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806205477] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:39,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642402010] [2023-11-19 07:37:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:39,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:39,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:39,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:37:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:39,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:37:39,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:39,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:39,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:39,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642402010] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:39,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:39,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-19 07:37:39,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944857613] [2023-11-19 07:37:39,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:39,270 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:39,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:37:39,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:37:39,272 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. cyclomatic complexity: 3 Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:39,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:39,320 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-11-19 07:37:39,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 18 transitions. [2023-11-19 07:37:39,323 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-19 07:37:39,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 18 transitions. [2023-11-19 07:37:39,326 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2023-11-19 07:37:39,327 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-11-19 07:37:39,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 18 transitions. [2023-11-19 07:37:39,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:39,327 INFO L218 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-19 07:37:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 18 transitions. [2023-11-19 07:37:39,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-19 07:37:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2023-11-19 07:37:39,331 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-19 07:37:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:37:39,336 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 18 transitions. [2023-11-19 07:37:39,336 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-19 07:37:39,337 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 18 transitions. [2023-11-19 07:37:39,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2023-11-19 07:37:39,338 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:39,338 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:39,338 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:39,339 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:37:39,339 INFO L748 eck$LassoCheckResult]: Stem: 147#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 148#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 143#L21-3 [2023-11-19 07:37:39,339 INFO L750 eck$LassoCheckResult]: Loop: 143#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 144#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 149#L23-3 assume !!(main_~c~0#1 < 6); 145#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 146#L23-3 assume !!(main_~c~0#1 < 6); 158#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 157#L23-3 assume !!(main_~c~0#1 < 6); 156#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 155#L23-3 assume !!(main_~c~0#1 < 6); 154#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 153#L23-3 assume !(main_~c~0#1 < 6); 151#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 152#L22-3 assume !(main_~b~0#1 < 6); 150#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 143#L21-3 [2023-11-19 07:37:39,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2023-11-19 07:37:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:39,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730089476] [2023-11-19 07:37:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:39,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:39,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:39,359 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:39,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:39,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1917011795, now seen corresponding path program 2 times [2023-11-19 07:37:39,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:39,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307160916] [2023-11-19 07:37:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:37:39,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:39,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307160916] [2023-11-19 07:37:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307160916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:39,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453868] [2023-11-19 07:37:39,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:37:39,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:39,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:39,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:39,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:37:39,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:37:39,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:39,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:37:39,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:39,648 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:39,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:39,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:39,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:39,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 10 [2023-11-19 07:37:39,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017610092] [2023-11-19 07:37:39,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:39,723 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:37:39,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:37:39,724 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. cyclomatic complexity: 3 Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:39,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:39,932 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2023-11-19 07:37:39,933 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 53 transitions. [2023-11-19 07:37:39,935 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2023-11-19 07:37:39,936 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 53 transitions. [2023-11-19 07:37:39,937 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2023-11-19 07:37:39,937 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2023-11-19 07:37:39,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 53 transitions. [2023-11-19 07:37:39,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:39,938 INFO L218 hiAutomatonCegarLoop]: Abstraction has 49 states and 53 transitions. [2023-11-19 07:37:39,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 53 transitions. [2023-11-19 07:37:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2023-11-19 07:37:39,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0857142857142856) internal successors, (38), 34 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) [2023-11-19 07:37:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2023-11-19 07:37:39,943 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-19 07:37:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-19 07:37:39,944 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 38 transitions. [2023-11-19 07:37:39,944 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-19 07:37:39,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 38 transitions. [2023-11-19 07:37:39,946 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2023-11-19 07:37:39,946 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:39,946 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:39,947 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:39,947 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [12, 12, 2, 2, 2, 1, 1, 1] [2023-11-19 07:37:39,948 INFO L748 eck$LassoCheckResult]: Stem: 327#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 328#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 323#L21-3 [2023-11-19 07:37:39,948 INFO L750 eck$LassoCheckResult]: Loop: 323#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 324#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 348#L23-3 assume !!(main_~c~0#1 < 6); 347#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 346#L23-3 assume !!(main_~c~0#1 < 6); 345#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 344#L23-3 assume !!(main_~c~0#1 < 6); 343#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 342#L23-3 assume !!(main_~c~0#1 < 6); 341#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 340#L23-3 assume !!(main_~c~0#1 < 6); 339#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 338#L23-3 assume !!(main_~c~0#1 < 6); 337#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 336#L23-3 assume !(main_~c~0#1 < 6); 333#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 330#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 331#L23-3 assume !!(main_~c~0#1 < 6); 325#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 326#L23-3 assume !!(main_~c~0#1 < 6); 329#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 357#L23-3 assume !!(main_~c~0#1 < 6); 356#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 355#L23-3 assume !!(main_~c~0#1 < 6); 354#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 353#L23-3 assume !!(main_~c~0#1 < 6); 352#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 351#L23-3 assume !!(main_~c~0#1 < 6); 350#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 349#L23-3 assume !(main_~c~0#1 < 6); 335#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 334#L22-3 assume !(main_~b~0#1 < 6); 332#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 323#L21-3 [2023-11-19 07:37:39,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2023-11-19 07:37:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:39,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936709433] [2023-11-19 07:37:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:39,956 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:39,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:39,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1010871677, now seen corresponding path program 3 times [2023-11-19 07:37:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:39,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471654983] [2023-11-19 07:37:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:39,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:40,092 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:37:40,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:37:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471654983] [2023-11-19 07:37:40,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471654983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:37:40,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467359121] [2023-11-19 07:37:40,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:37:40,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:37:40,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:40,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:37:40,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:37:40,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-11-19 07:37:40,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:37:40,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:40,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:37:40,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:37:40,316 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-19 07:37:40,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467359121] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:37:40,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:37:40,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:37:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708359561] [2023-11-19 07:37:40,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:37:40,318 INFO L765 eck$LassoCheckResult]: loop already infeasible [2023-11-19 07:37:40,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:37:40,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:37:40,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:37:40,319 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. cyclomatic complexity: 4 Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:40,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:37:40,352 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2023-11-19 07:37:40,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 95 states and 102 transitions. [2023-11-19 07:37:40,355 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 93 [2023-11-19 07:37:40,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 95 states to 95 states and 102 transitions. [2023-11-19 07:37:40,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 95 [2023-11-19 07:37:40,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 95 [2023-11-19 07:37:40,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 102 transitions. [2023-11-19 07:37:40,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:40,359 INFO L218 hiAutomatonCegarLoop]: Abstraction has 95 states and 102 transitions. [2023-11-19 07:37:40,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 102 transitions. [2023-11-19 07:37:40,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-19 07:37:40,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 95 states have (on average 1.0736842105263158) internal successors, (102), 94 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2023-11-19 07:37:40,368 INFO L240 hiAutomatonCegarLoop]: Abstraction has 95 states and 102 transitions. [2023-11-19 07:37:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:37:40,369 INFO L428 stractBuchiCegarLoop]: Abstraction has 95 states and 102 transitions. [2023-11-19 07:37:40,369 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-11-19 07:37:40,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 95 states and 102 transitions. [2023-11-19 07:37:40,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 93 [2023-11-19 07:37:40,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:40,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:40,374 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-19 07:37:40,374 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [36, 36, 6, 6, 6, 1, 1, 1] [2023-11-19 07:37:40,374 INFO L748 eck$LassoCheckResult]: Stem: 660#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 661#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 656#L21-3 [2023-11-19 07:37:40,375 INFO L750 eck$LassoCheckResult]: Loop: 656#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 657#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 662#L23-3 assume !!(main_~c~0#1 < 6); 658#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 659#L23-3 assume !!(main_~c~0#1 < 6); 747#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 745#L23-3 assume !!(main_~c~0#1 < 6); 743#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 741#L23-3 assume !!(main_~c~0#1 < 6); 739#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 737#L23-3 assume !!(main_~c~0#1 < 6); 735#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 733#L23-3 assume !!(main_~c~0#1 < 6); 731#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 730#L23-3 assume !(main_~c~0#1 < 6); 664#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 665#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 750#L23-3 assume !!(main_~c~0#1 < 6); 749#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 748#L23-3 assume !!(main_~c~0#1 < 6); 746#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 744#L23-3 assume !!(main_~c~0#1 < 6); 742#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 740#L23-3 assume !!(main_~c~0#1 < 6); 738#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 736#L23-3 assume !!(main_~c~0#1 < 6); 734#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 732#L23-3 assume !!(main_~c~0#1 < 6); 729#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 728#L23-3 assume !(main_~c~0#1 < 6); 727#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 726#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 725#L23-3 assume !!(main_~c~0#1 < 6); 724#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 723#L23-3 assume !!(main_~c~0#1 < 6); 722#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 721#L23-3 assume !!(main_~c~0#1 < 6); 720#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 719#L23-3 assume !!(main_~c~0#1 < 6); 718#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 717#L23-3 assume !!(main_~c~0#1 < 6); 716#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 715#L23-3 assume !!(main_~c~0#1 < 6); 714#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 713#L23-3 assume !(main_~c~0#1 < 6); 712#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 711#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 710#L23-3 assume !!(main_~c~0#1 < 6); 709#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 708#L23-3 assume !!(main_~c~0#1 < 6); 707#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 706#L23-3 assume !!(main_~c~0#1 < 6); 705#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 704#L23-3 assume !!(main_~c~0#1 < 6); 703#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 702#L23-3 assume !!(main_~c~0#1 < 6); 701#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 700#L23-3 assume !!(main_~c~0#1 < 6); 699#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 698#L23-3 assume !(main_~c~0#1 < 6); 697#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 696#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 695#L23-3 assume !!(main_~c~0#1 < 6); 694#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 693#L23-3 assume !!(main_~c~0#1 < 6); 692#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 691#L23-3 assume !!(main_~c~0#1 < 6); 690#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 689#L23-3 assume !!(main_~c~0#1 < 6); 688#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 687#L23-3 assume !!(main_~c~0#1 < 6); 686#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 685#L23-3 assume !!(main_~c~0#1 < 6); 684#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 683#L23-3 assume !(main_~c~0#1 < 6); 682#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 681#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 667#L23-3 assume !!(main_~c~0#1 < 6); 680#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 679#L23-3 assume !!(main_~c~0#1 < 6); 678#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 677#L23-3 assume !!(main_~c~0#1 < 6); 676#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 675#L23-3 assume !!(main_~c~0#1 < 6); 674#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 673#L23-3 assume !!(main_~c~0#1 < 6); 672#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 671#L23-3 assume !!(main_~c~0#1 < 6); 670#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 669#L23-3 assume !(main_~c~0#1 < 6); 668#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 666#L22-3 assume !(main_~b~0#1 < 6); 663#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 656#L21-3 [2023-11-19 07:37:40,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:40,376 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2023-11-19 07:37:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:40,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411287353] [2023-11-19 07:37:40,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:40,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:40,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:40,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:40,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:40,390 INFO L85 PathProgramCache]: Analyzing trace with hash -655757187, now seen corresponding path program 4 times [2023-11-19 07:37:40,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:40,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479146683] [2023-11-19 07:37:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:40,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:40,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:40,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:40,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1993610245, now seen corresponding path program 1 times [2023-11-19 07:37:40,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:40,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844684254] [2023-11-19 07:37:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:40,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:40,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:41,980 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:41,981 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:41,981 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:41,981 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:41,981 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:41,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:41,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:41,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:41,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration6_Loop [2023-11-19 07:37:41,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:41,983 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:42,006 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,016 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,019 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,024 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,029 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,038 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,117 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:42,119 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:42,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,143 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:42,144 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:42,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-19 07:37:42,184 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:42,184 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre5#1=0} Honda state: {ULTIMATE.start_main_#t~pre5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:42,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,223 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:42,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:42,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-19 07:37:42,271 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:42,271 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre6#1=0} Honda state: {ULTIMATE.start_main_#t~pre6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:42,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,302 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:42,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:42,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-19 07:37:42,361 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:42,361 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre4#1=0} Honda state: {ULTIMATE.start_main_#t~pre4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:42,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,388 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-11-19 07:37:42,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:42,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:42,423 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:42,423 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0#1=6} Honda state: {ULTIMATE.start_main_~c~0#1=6} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:42,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:42,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:42,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-19 07:37:42,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,504 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-19 07:37:42,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:42,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:42,558 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:42,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,570 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:42,570 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:42,570 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:42,570 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:42,571 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:42,571 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,571 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:42,571 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:42,571 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration6_Loop [2023-11-19 07:37:42,571 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:42,571 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:42,573 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,577 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,582 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,586 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,589 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,593 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:42,653 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:42,659 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:42,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,662 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:42,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-19 07:37:42,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:42,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:42,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:42,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:42,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:42,698 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:42,698 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:42,717 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:42,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,748 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,763 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:42,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-19 07:37:42,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:42,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:42,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:42,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:42,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:42,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:42,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:42,791 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:42,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,823 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:42,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-19 07:37:42,841 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:42,841 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:42,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:42,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:42,842 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:42,843 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:42,843 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:42,853 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:42,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,881 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,891 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:42,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-19 07:37:42,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:42,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:42,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:42,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:42,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:42,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:42,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:42,924 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:42,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:42,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:42,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:42,955 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:42,958 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:42,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-19 07:37:42,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:42,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:42,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:42,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:42,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:42,973 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:42,974 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:42,983 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:43,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:43,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:43,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:43,013 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:43,023 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:43,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:43,037 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:43,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:43,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:43,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:43,040 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:43,040 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:43,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-11-19 07:37:43,050 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:43,054 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:43,055 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:37:43,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:43,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:43,059 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:43,066 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:43,067 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:43,067 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:43,067 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~a~0#1) = -2*ULTIMATE.start_main_~a~0#1 + 11 Supporting invariants [] [2023-11-19 07:37:43,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-19 07:37:43,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:43,099 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:43,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:43,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:43,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:43,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:43,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1527 trivial. 0 not checked. [2023-11-19 07:37:43,865 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:43,867 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 95 states and 102 transitions. cyclomatic complexity: 8 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:43,932 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 95 states and 102 transitions. cyclomatic complexity: 8. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 188 states and 203 transitions. Complement of second has 4 states. [2023-11-19 07:37:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-11-19 07:37:43,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 93 letters. [2023-11-19 07:37:43,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:43,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 95 letters. Loop has 93 letters. [2023-11-19 07:37:43,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:43,943 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 2 letters. Loop has 186 letters. [2023-11-19 07:37:43,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:43,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 203 transitions. [2023-11-19 07:37:43,950 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 25 [2023-11-19 07:37:43,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 187 states and 202 transitions. [2023-11-19 07:37:43,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 93 [2023-11-19 07:37:43,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 94 [2023-11-19 07:37:43,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 202 transitions. [2023-11-19 07:37:43,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:43,954 INFO L218 hiAutomatonCegarLoop]: Abstraction has 187 states and 202 transitions. [2023-11-19 07:37:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states and 202 transitions. [2023-11-19 07:37:43,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 111. [2023-11-19 07:37:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 111 states have (on average 1.09009009009009) internal successors, (121), 110 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:43,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2023-11-19 07:37:43,966 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 121 transitions. [2023-11-19 07:37:43,966 INFO L428 stractBuchiCegarLoop]: Abstraction has 111 states and 121 transitions. [2023-11-19 07:37:43,967 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-11-19 07:37:43,967 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 121 transitions. [2023-11-19 07:37:43,968 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2023-11-19 07:37:43,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:43,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:43,969 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-19 07:37:43,970 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 1, 1, 1] [2023-11-19 07:37:43,970 INFO L748 eck$LassoCheckResult]: Stem: 1251#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 1243#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 1245#L22-3 [2023-11-19 07:37:43,970 INFO L750 eck$LassoCheckResult]: Loop: 1245#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 1253#L23-3 assume !!(main_~c~0#1 < 6); 1247#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1248#L23-3 assume !!(main_~c~0#1 < 6); 1353#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1352#L23-3 assume !!(main_~c~0#1 < 6); 1351#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1350#L23-3 assume !!(main_~c~0#1 < 6); 1349#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1348#L23-3 assume !!(main_~c~0#1 < 6); 1347#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1346#L23-3 assume !!(main_~c~0#1 < 6); 1345#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1344#L23-3 assume !(main_~c~0#1 < 6); 1257#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 1245#L22-3 [2023-11-19 07:37:43,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash 29863, now seen corresponding path program 1 times [2023-11-19 07:37:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:43,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383947987] [2023-11-19 07:37:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:43,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:43,977 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:43,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:43,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash -706979195, now seen corresponding path program 1 times [2023-11-19 07:37:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:43,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110417374] [2023-11-19 07:37:43,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:43,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,030 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,037 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:44,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash 855328031, now seen corresponding path program 1 times [2023-11-19 07:37:44,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:44,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875565616] [2023-11-19 07:37:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:44,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:44,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:44,141 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:44,141 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:44,141 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:44,141 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:44,142 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:44,142 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,142 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:44,142 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:44,142 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration7_Loop [2023-11-19 07:37:44,142 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:44,143 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:44,144 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,152 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,155 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,157 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,190 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:44,191 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:44,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,193 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:44,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:44,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-19 07:37:44,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:44,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,261 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:44,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:44,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-19 07:37:44,329 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:44,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:44,338 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:44,338 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:44,338 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:44,338 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:44,338 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:44,338 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,339 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:44,339 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:44,339 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration7_Loop [2023-11-19 07:37:44,339 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:44,339 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:44,340 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,346 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,348 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,351 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,380 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:44,380 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:44,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,382 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-19 07:37:44,390 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:44,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:44,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:44,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:44,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:44,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:44,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:44,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:44,415 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:44,418 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:44,418 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:37:44,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,421 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,425 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:44,425 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:44,425 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:44,425 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0#1) = -2*ULTIMATE.start_main_~b~0#1 + 11 Supporting invariants [] [2023-11-19 07:37:44,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-19 07:37:44,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:44,449 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:44,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:44,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:44,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:44,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:44,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:37:44,563 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:44,563 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 121 transitions. cyclomatic complexity: 12 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:44,599 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 121 transitions. cyclomatic complexity: 12. 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 320 states and 348 transitions. Complement of second has 7 states. [2023-11-19 07:37:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-19 07:37:44,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 15 letters. [2023-11-19 07:37:44,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:44,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 18 letters. Loop has 15 letters. [2023-11-19 07:37:44,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:44,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 3 letters. Loop has 30 letters. [2023-11-19 07:37:44,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:44,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 320 states and 348 transitions. [2023-11-19 07:37:44,614 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2023-11-19 07:37:44,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 320 states to 233 states and 254 transitions. [2023-11-19 07:37:44,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2023-11-19 07:37:44,619 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2023-11-19 07:37:44,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 233 states and 254 transitions. [2023-11-19 07:37:44,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:44,620 INFO L218 hiAutomatonCegarLoop]: Abstraction has 233 states and 254 transitions. [2023-11-19 07:37:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states and 254 transitions. [2023-11-19 07:37:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 129. [2023-11-19 07:37:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.1007751937984496) internal successors, (142), 128 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:44,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 142 transitions. [2023-11-19 07:37:44,647 INFO L240 hiAutomatonCegarLoop]: Abstraction has 129 states and 142 transitions. [2023-11-19 07:37:44,649 INFO L428 stractBuchiCegarLoop]: Abstraction has 129 states and 142 transitions. [2023-11-19 07:37:44,649 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2023-11-19 07:37:44,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 142 transitions. [2023-11-19 07:37:44,650 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2023-11-19 07:37:44,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:44,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:44,651 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-19 07:37:44,651 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:37:44,651 INFO L748 eck$LassoCheckResult]: Stem: 1760#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 1761#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 1751#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 1753#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 1757#L23-3 [2023-11-19 07:37:44,651 INFO L750 eck$LassoCheckResult]: Loop: 1757#L23-3 assume !!(main_~c~0#1 < 6); 1756#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 1757#L23-3 [2023-11-19 07:37:44,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash 925771, now seen corresponding path program 1 times [2023-11-19 07:37:44,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:44,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560661699] [2023-11-19 07:37:44,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:44,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,670 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:44,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:44,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1795, now seen corresponding path program 1 times [2023-11-19 07:37:44,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:44,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009932218] [2023-11-19 07:37:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,678 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:44,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:44,679 INFO L85 PathProgramCache]: Analyzing trace with hash 889666765, now seen corresponding path program 1 times [2023-11-19 07:37:44,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:44,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906797011] [2023-11-19 07:37:44,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:44,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:44,701 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:44,715 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:44,715 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:44,715 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:44,715 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:44,715 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:44,715 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,715 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:44,716 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:44,716 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration8_Loop [2023-11-19 07:37:44,716 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:44,716 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:44,717 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,719 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,750 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:44,751 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:44,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,752 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:44,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:44,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-19 07:37:44,784 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:44,784 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre6#1=0} Honda state: {ULTIMATE.start_main_#t~pre6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:44,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:44,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,811 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:44,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:44,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-19 07:37:44,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:44,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,877 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:44,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:44,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-19 07:37:44,939 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:44,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:44,944 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:44,945 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:44,945 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:44,945 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:44,945 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:44,945 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,945 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:44,945 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:44,945 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration8_Loop [2023-11-19 07:37:44,945 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:44,945 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:44,946 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,953 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:44,971 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:44,972 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:44,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:44,973 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:44,976 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:44,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-19 07:37:44,990 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:44,990 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:44,990 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:44,990 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:44,990 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:44,991 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:44,991 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:45,012 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:45,015 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:45,015 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:37:45,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:45,022 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:45,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-19 07:37:45,025 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:45,025 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:45,025 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:45,026 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0#1) = -2*ULTIMATE.start_main_~c~0#1 + 11 Supporting invariants [] [2023-11-19 07:37:45,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:45,052 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:45,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,087 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:45,102 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:45,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 129 states and 142 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,136 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 129 states and 142 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 180 states and 199 transitions. Complement of second has 7 states. [2023-11-19 07:37:45,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2023-11-19 07:37:45,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2023-11-19 07:37:45,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:45,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2023-11-19 07:37:45,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:45,142 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2023-11-19 07:37:45,142 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:45,142 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 199 transitions. [2023-11-19 07:37:45,144 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2023-11-19 07:37:45,146 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 160 states and 175 transitions. [2023-11-19 07:37:45,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2023-11-19 07:37:45,147 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2023-11-19 07:37:45,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 175 transitions. [2023-11-19 07:37:45,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:45,152 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 175 transitions. [2023-11-19 07:37:45,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 175 transitions. [2023-11-19 07:37:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 129. [2023-11-19 07:37:45,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 129 states have (on average 1.0930232558139534) internal successors, (141), 128 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 141 transitions. [2023-11-19 07:37:45,173 INFO L240 hiAutomatonCegarLoop]: Abstraction has 129 states and 141 transitions. [2023-11-19 07:37:45,173 INFO L428 stractBuchiCegarLoop]: Abstraction has 129 states and 141 transitions. [2023-11-19 07:37:45,173 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2023-11-19 07:37:45,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 129 states and 141 transitions. [2023-11-19 07:37:45,174 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2023-11-19 07:37:45,174 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:45,174 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:45,175 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 2, 1, 1, 1, 1, 1] [2023-11-19 07:37:45,176 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-11-19 07:37:45,176 INFO L748 eck$LassoCheckResult]: Stem: 2110#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 2111#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 2101#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 2103#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 2112#L23-3 assume !!(main_~c~0#1 < 6); 2108#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2109#L23-3 assume !!(main_~c~0#1 < 6); 2228#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2226#L23-3 assume !!(main_~c~0#1 < 6); 2224#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2222#L23-3 assume !!(main_~c~0#1 < 6); 2220#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2218#L23-3 assume !!(main_~c~0#1 < 6); 2216#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2214#L23-3 assume !!(main_~c~0#1 < 6); 2211#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2210#L23-3 assume !(main_~c~0#1 < 6); 2207#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 2147#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 2107#L23-3 [2023-11-19 07:37:45,177 INFO L750 eck$LassoCheckResult]: Loop: 2107#L23-3 assume !!(main_~c~0#1 < 6); 2106#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 2107#L23-3 [2023-11-19 07:37:45,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,178 INFO L85 PathProgramCache]: Analyzing trace with hash 745365203, now seen corresponding path program 2 times [2023-11-19 07:37:45,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:45,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474702983] [2023-11-19 07:37:45,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:45,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:45,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:45,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1795, now seen corresponding path program 2 times [2023-11-19 07:37:45,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:45,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823467216] [2023-11-19 07:37:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:45,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:45,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:45,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash -963577515, now seen corresponding path program 3 times [2023-11-19 07:37:45,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:45,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986787744] [2023-11-19 07:37:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:45,244 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:45,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:45,285 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:45,285 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:45,285 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:45,285 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:45,286 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:45,286 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,286 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:45,286 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:45,286 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration9_Loop [2023-11-19 07:37:45,286 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:45,286 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:45,287 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:45,290 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:45,318 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:45,318 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:45,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:45,320 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:45,329 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:45,329 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:45,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-19 07:37:45,360 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:45,361 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre6#1=0} Honda state: {ULTIMATE.start_main_#t~pre6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:45,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:45,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:45,388 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:45,390 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:45,390 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:45,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-19 07:37:45,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:45,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:45,465 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:45,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:45,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:45,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-19 07:37:45,529 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:45,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:45,534 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:45,534 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:45,534 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:45,534 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:45,534 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:45,534 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,534 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:45,534 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:45,534 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration9_Loop [2023-11-19 07:37:45,535 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:45,535 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:45,535 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:45,538 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:45,564 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:45,564 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:45,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:45,566 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:45,569 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:45,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-19 07:37:45,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:45,583 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:45,583 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:45,583 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:45,583 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:45,586 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:45,586 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:45,604 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-19 07:37:45,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:45,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:45,630 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:45,634 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:45,646 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:45,646 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:45,646 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:45,646 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:45,647 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:45,647 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:45,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:45,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-19 07:37:45,657 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:45,659 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:45,659 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:37:45,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:45,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:45,662 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:45,663 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:45,663 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:45,663 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:45,663 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0#1) = -2*ULTIMATE.start_main_~c~0#1 + 11 Supporting invariants [] [2023-11-19 07:37:45,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-11-19 07:37:45,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:45,682 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:45,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,736 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:45,749 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:45,749 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,771 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 176 states and 193 transitions. Complement of second has 7 states. [2023-11-19 07:37:45,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:45,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2023-11-19 07:37:45,773 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 19 letters. Loop has 2 letters. [2023-11-19 07:37:45,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:45,773 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:37:45,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,832 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:45,848 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:45,848 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,868 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 176 states and 193 transitions. Complement of second has 7 states. [2023-11-19 07:37:45,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2023-11-19 07:37:45,870 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 19 letters. Loop has 2 letters. [2023-11-19 07:37:45,870 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:45,870 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:37:45,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:45,930 WARN L260 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:45,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:37:45,945 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:45,945 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16 Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,965 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 129 states and 141 transitions. cyclomatic complexity: 16. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 200 states and 221 transitions. Complement of second has 6 states. [2023-11-19 07:37:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:45,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2023-11-19 07:37:45,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 2 letters. [2023-11-19 07:37:45,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:45,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 2 letters. [2023-11-19 07:37:45,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:45,967 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 19 letters. Loop has 4 letters. [2023-11-19 07:37:45,967 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:45,967 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 221 transitions. [2023-11-19 07:37:45,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2023-11-19 07:37:45,970 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 112 states and 121 transitions. [2023-11-19 07:37:45,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2023-11-19 07:37:45,971 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2023-11-19 07:37:45,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 112 states and 121 transitions. [2023-11-19 07:37:45,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-19 07:37:45,971 INFO L218 hiAutomatonCegarLoop]: Abstraction has 112 states and 121 transitions. [2023-11-19 07:37:45,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states and 121 transitions. [2023-11-19 07:37:45,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2023-11-19 07:37:45,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 111 states have (on average 1.0810810810810811) internal successors, (120), 110 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:45,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2023-11-19 07:37:45,975 INFO L240 hiAutomatonCegarLoop]: Abstraction has 111 states and 120 transitions. [2023-11-19 07:37:45,975 INFO L428 stractBuchiCegarLoop]: Abstraction has 111 states and 120 transitions. [2023-11-19 07:37:45,975 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2023-11-19 07:37:45,975 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 111 states and 120 transitions. [2023-11-19 07:37:45,976 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2023-11-19 07:37:45,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-19 07:37:45,976 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-19 07:37:45,980 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [36, 36, 6, 6, 6, 2, 1, 1, 1, 1] [2023-11-19 07:37:45,980 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 6, 1, 1, 1] [2023-11-19 07:37:45,981 INFO L748 eck$LassoCheckResult]: Stem: 3015#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 3016#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~pre6#1, main_#t~pre5#1, main_#t~pre4#1, main_~a~0#1, main_~b~0#1, main_~c~0#1;main_~a~0#1 := 6;main_~b~0#1 := 6;main_~c~0#1 := 6;main_~a~0#1 := 0; 3009#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 3010#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3119#L23-3 assume !!(main_~c~0#1 < 6); 3118#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3117#L23-3 assume !!(main_~c~0#1 < 6); 3115#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3113#L23-3 assume !!(main_~c~0#1 < 6); 3111#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3109#L23-3 assume !!(main_~c~0#1 < 6); 3107#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3105#L23-3 assume !!(main_~c~0#1 < 6); 3103#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3101#L23-3 assume !!(main_~c~0#1 < 6); 3098#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3097#L23-3 assume !(main_~c~0#1 < 6); 3023#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3020#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3019#L23-3 assume !!(main_~c~0#1 < 6); 3013#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3014#L23-3 assume !!(main_~c~0#1 < 6); 3116#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3114#L23-3 assume !!(main_~c~0#1 < 6); 3112#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3110#L23-3 assume !!(main_~c~0#1 < 6); 3108#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3106#L23-3 assume !!(main_~c~0#1 < 6); 3104#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3102#L23-3 assume !!(main_~c~0#1 < 6); 3100#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3099#L23-3 assume !(main_~c~0#1 < 6); 3096#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3095#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3094#L23-3 assume !!(main_~c~0#1 < 6); 3093#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3092#L23-3 assume !!(main_~c~0#1 < 6); 3091#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3090#L23-3 assume !!(main_~c~0#1 < 6); 3089#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3088#L23-3 assume !!(main_~c~0#1 < 6); 3087#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3086#L23-3 assume !!(main_~c~0#1 < 6); 3085#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3084#L23-3 assume !!(main_~c~0#1 < 6); 3083#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3082#L23-3 assume !(main_~c~0#1 < 6); 3081#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3080#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3079#L23-3 assume !!(main_~c~0#1 < 6); 3078#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3077#L23-3 assume !!(main_~c~0#1 < 6); 3076#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3075#L23-3 assume !!(main_~c~0#1 < 6); 3074#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3073#L23-3 assume !!(main_~c~0#1 < 6); 3072#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3071#L23-3 assume !!(main_~c~0#1 < 6); 3070#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3069#L23-3 assume !!(main_~c~0#1 < 6); 3068#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3067#L23-3 assume !(main_~c~0#1 < 6); 3066#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3065#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3064#L23-3 assume !!(main_~c~0#1 < 6); 3063#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3062#L23-3 assume !!(main_~c~0#1 < 6); 3061#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3060#L23-3 assume !!(main_~c~0#1 < 6); 3059#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3058#L23-3 assume !!(main_~c~0#1 < 6); 3057#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3056#L23-3 assume !!(main_~c~0#1 < 6); 3055#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3054#L23-3 assume !!(main_~c~0#1 < 6); 3053#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3052#L23-3 assume !(main_~c~0#1 < 6); 3051#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3050#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3027#L23-3 assume !!(main_~c~0#1 < 6); 3049#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3048#L23-3 assume !!(main_~c~0#1 < 6); 3047#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3046#L23-3 assume !!(main_~c~0#1 < 6); 3044#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3042#L23-3 assume !!(main_~c~0#1 < 6); 3040#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3038#L23-3 assume !!(main_~c~0#1 < 6); 3036#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3034#L23-3 assume !!(main_~c~0#1 < 6); 3031#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3030#L23-3 assume !(main_~c~0#1 < 6); 3028#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3026#L22-3 assume !(main_~b~0#1 < 6); 3021#L21-2 main_#t~pre4#1 := 1 + main_~a~0#1;main_~a~0#1 := 1 + main_~a~0#1;havoc main_#t~pre4#1; 3011#L21-3 assume !!(main_~a~0#1 < 6);main_~b~0#1 := 0; 3012#L22-3 [2023-11-19 07:37:45,981 INFO L750 eck$LassoCheckResult]: Loop: 3012#L22-3 assume !!(main_~b~0#1 < 6);main_~c~0#1 := 0; 3017#L23-3 assume !!(main_~c~0#1 < 6); 3018#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3045#L23-3 assume !!(main_~c~0#1 < 6); 3043#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3041#L23-3 assume !!(main_~c~0#1 < 6); 3039#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3037#L23-3 assume !!(main_~c~0#1 < 6); 3035#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3033#L23-3 assume !!(main_~c~0#1 < 6); 3032#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3029#L23-3 assume !!(main_~c~0#1 < 6); 3025#L23-2 main_#t~pre6#1 := 1 + main_~c~0#1;main_~c~0#1 := 1 + main_~c~0#1;havoc main_#t~pre6#1; 3024#L23-3 assume !(main_~c~0#1 < 6); 3022#L22-2 main_#t~pre5#1 := 1 + main_~b~0#1;main_~b~0#1 := 1 + main_~b~0#1;havoc main_#t~pre5#1; 3012#L22-3 [2023-11-19 07:37:45,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:45,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1672375441, now seen corresponding path program 2 times [2023-11-19 07:37:45,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:45,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927372261] [2023-11-19 07:37:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:45,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:46,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:46,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:46,056 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:46,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:46,057 INFO L85 PathProgramCache]: Analyzing trace with hash -706979195, now seen corresponding path program 2 times [2023-11-19 07:37:46,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:46,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409373155] [2023-11-19 07:37:46,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:46,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:46,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:46,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:46,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:46,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1669350057, now seen corresponding path program 3 times [2023-11-19 07:37:46,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:37:46,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896878605] [2023-11-19 07:37:46,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:37:46,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:37:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:46,089 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:37:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:37:46,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:46,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:37:46,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:46,198 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:46,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:46,199 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:46,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:46,199 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-19 07:37:46,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:46,199 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:46,199 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:46,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration10_Loop [2023-11-19 07:37:46,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:46,200 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:46,201 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:46,203 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:46,208 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:46,212 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:46,244 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:46,244 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-19 07:37:46,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:46,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:46,249 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:46,251 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:46,252 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:46,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2023-11-19 07:37:46,280 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-19 07:37:46,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~pre6#1=0} Honda state: {ULTIMATE.start_main_#t~pre6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-19 07:37:46,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:46,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:46,305 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:46,308 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-19 07:37:46,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:46,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-11-19 07:37:46,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:46,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:46,360 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:46,363 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-19 07:37:46,363 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-19 07:37:46,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-11-19 07:37:46,395 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-19 07:37:46,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:46,398 INFO L210 LassoAnalysis]: Preferences: [2023-11-19 07:37:46,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-19 07:37:46,398 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-19 07:37:46,398 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-19 07:37:46,398 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-19 07:37:46,398 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:46,398 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-19 07:37:46,398 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-19 07:37:46,398 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested_3.c_Iteration10_Loop [2023-11-19 07:37:46,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-19 07:37:46,398 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-19 07:37:46,399 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:46,410 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:46,414 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:46,419 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-19 07:37:46,451 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-19 07:37:46,451 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-19 07:37:46,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:46,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:46,452 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:46,459 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-11-19 07:37:46,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-19 07:37:46,471 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-19 07:37:46,471 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-19 07:37:46,471 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-19 07:37:46,471 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-19 07:37:46,472 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-19 07:37:46,472 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-19 07:37:46,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-11-19 07:37:46,484 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-19 07:37:46,492 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-19 07:37:46,493 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-19 07:37:46,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-19 07:37:46,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:37:46,494 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-19 07:37:46,496 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-19 07:37:46,496 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-19 07:37:46,496 INFO L513 LassoAnalysis]: Proved termination. [2023-11-19 07:37:46,496 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~b~0#1) = -2*ULTIMATE.start_main_~b~0#1 + 11 Supporting invariants [] [2023-11-19 07:37:46,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-11-19 07:37:46,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:46,520 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-19 07:37:46,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:46,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:46,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:46,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:46,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:37:46,806 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:46,807 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:46,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 290 states and 314 transitions. Complement of second has 7 states. [2023-11-19 07:37:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-19 07:37:46,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 96 letters. Loop has 15 letters. [2023-11-19 07:37:46,831 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:46,831 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:37:46,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:46,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:46,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:47,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:47,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:37:47,082 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:47,082 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:47,101 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 290 states and 314 transitions. Complement of second has 7 states. [2023-11-19 07:37:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-11-19 07:37:47,103 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 96 letters. Loop has 15 letters. [2023-11-19 07:37:47,103 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:47,103 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-19 07:37:47,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:37:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:47,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:37:47,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:37:47,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:37:47,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:37:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 07:37:47,328 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-11-19 07:37:47,328 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:47,347 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 111 states and 120 transitions. cyclomatic complexity: 11. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 212 states and 230 transitions. Complement of second has 6 states. [2023-11-19 07:37:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-19 07:37:47,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:37:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2023-11-19 07:37:47,348 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 96 letters. Loop has 15 letters. [2023-11-19 07:37:47,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:47,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 111 letters. Loop has 15 letters. [2023-11-19 07:37:47,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:47,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 96 letters. Loop has 30 letters. [2023-11-19 07:37:47,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-19 07:37:47,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 230 transitions. [2023-11-19 07:37:47,352 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:37:47,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 0 states and 0 transitions. [2023-11-19 07:37:47,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-19 07:37:47,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-19 07:37:47,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-19 07:37:47,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:37:47,353 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:37:47,353 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:37:47,354 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 07:37:47,354 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2023-11-19 07:37:47,354 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-19 07:37:47,354 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-19 07:37:47,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-19 07:37:47,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 07:37:47 BoogieIcfgContainer [2023-11-19 07:37:47,361 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-19 07:37:47,362 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:37:47,362 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:37:47,362 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:37:47,363 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:37:38" (3/4) ... [2023-11-19 07:37:47,364 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-19 07:37:47,366 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:37:47,366 INFO L158 Benchmark]: Toolchain (without parser) took 9835.22ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 108.4MB in the beginning and 55.2MB in the end (delta: 53.2MB). Peak memory consumption was 106.1MB. Max. memory is 16.1GB. [2023-11-19 07:37:47,367 INFO L158 Benchmark]: CDTParser took 21.18ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 118.7MB in the end (delta: -7.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:37:47,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.88ms. Allocated memory is still 144.7MB. Free memory was 108.4MB in the beginning and 98.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:37:47,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.18ms. Allocated memory is still 144.7MB. Free memory was 98.3MB in the beginning and 96.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:37:47,368 INFO L158 Benchmark]: Boogie Preprocessor took 36.77ms. Allocated memory is still 144.7MB. Free memory was 96.9MB in the beginning and 95.9MB in the end (delta: 996.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:47,368 INFO L158 Benchmark]: RCFGBuilder took 416.01ms. Allocated memory is still 144.7MB. Free memory was 95.9MB in the beginning and 86.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:37:47,368 INFO L158 Benchmark]: BuchiAutomizer took 9012.16ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 86.4MB in the beginning and 55.2MB in the end (delta: 31.2MB). Peak memory consumption was 83.0MB. Max. memory is 16.1GB. [2023-11-19 07:37:47,369 INFO L158 Benchmark]: Witness Printer took 3.67ms. Allocated memory is still 195.0MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:37:47,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 21.18ms. Allocated memory is still 144.7MB. Free memory was 111.0MB in the beginning and 118.7MB in the end (delta: -7.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.88ms. Allocated memory is still 144.7MB. Free memory was 108.4MB in the beginning and 98.3MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.18ms. Allocated memory is still 144.7MB. Free memory was 98.3MB in the beginning and 96.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.77ms. Allocated memory is still 144.7MB. Free memory was 96.9MB in the beginning and 95.9MB in the end (delta: 996.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 416.01ms. Allocated memory is still 144.7MB. Free memory was 95.9MB in the beginning and 86.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 9012.16ms. Allocated memory was 144.7MB in the beginning and 195.0MB in the end (delta: 50.3MB). Free memory was 86.4MB in the beginning and 55.2MB in the end (delta: 31.2MB). Peak memory consumption was 83.0MB. Max. memory is 16.1GB. * Witness Printer took 3.67ms. Allocated memory is still 195.0MB. Free memory is still 55.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function ((-2 * a) + 11) and consists of 3 locations. One deterministic module has affine ranking function ((-2 * b) + 11) and consists of 4 locations. One deterministic module has affine ranking function ((-2 * c) + 11) and consists of 4 locations. One nondeterministic module has affine ranking function ((-2 * c) + 11) and consists of 4 locations. One nondeterministic module has affine ranking function ((-2 * b) + 11) and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.9s and 11 iterations. TraceHistogramMax:36. Analysis of lassos took 6.0s. Construction of modules took 0.1s. Büchi inclusion checks took 2.4s. Highest rank in rank-based complementation 3. Minimization of det autom 6. Minimization of nondet autom 4. Automata minimization 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 230 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1599/1599 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 224 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 101 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154 IncrementalHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 123 mSDtfsCounter, 154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI5 SFLT5 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax100 hnf100 lsp83 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 57ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-19 07:37:47,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:47,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:37:47,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:37:48,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:37:48,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25a0a2e5-07a0-4afd-8f26-b2122aa7f64b/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE