./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-lit/gr2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc 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_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-lit/gr2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya --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 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:05:41,260 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:05:41,327 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Termination-32bit-Automizer_Default.epf [2023-11-29 07:05:41,333 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:05:41,333 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:05:41,361 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:05:41,361 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:05:41,362 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:05:41,362 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:05:41,363 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:05:41,364 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:05:41,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:05:41,365 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:05:41,365 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-29 07:05:41,366 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-29 07:05:41,366 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-29 07:05:41,367 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-29 07:05:41,368 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-29 07:05:41,368 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-29 07:05:41,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:05:41,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-29 07:05:41,370 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:05:41,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:05:41,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:05:41,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:05:41,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-29 07:05:41,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-29 07:05:41,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-29 07:05:41,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 07:05:41,374 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:05:41,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 07:05:41,374 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-29 07:05:41,375 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:05:41,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:05:41,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:05:41,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:05:41,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:05:41,376 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-29 07:05:41,376 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_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3ef045eb54c58e8ecfe4972142a43378e1f3b08091dc3d5b7e399cf5703f1724 [2023-11-29 07:05:41,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:05:41,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:05:41,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:05:41,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:05:41,619 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:05:41,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/loop-lit/gr2006.i [2023-11-29 07:05:44,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:05:44,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:05:44,743 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/sv-benchmarks/c/loop-lit/gr2006.i [2023-11-29 07:05:44,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/data/3912153c1/dc882f1ed01f44cfadcd8b6557414907/FLAGc9ba96dfb [2023-11-29 07:05:44,762 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/data/3912153c1/dc882f1ed01f44cfadcd8b6557414907 [2023-11-29 07:05:44,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:05:44,767 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:05:44,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:05:44,769 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:05:44,775 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:05:44,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:44,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a20416e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44, skipping insertion in model container [2023-11-29 07:05:44,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:44,796 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:05:44,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:05:44,937 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:05:44,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:05:44,964 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:05:44,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44 WrapperNode [2023-11-29 07:05:44,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:05:44,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:05:44,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:05:44,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:05:44,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:44,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:44,997 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 40 [2023-11-29 07:05:44,997 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:05:44,998 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:05:44,998 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:05:44,998 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:05:45,007 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,018 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 07:05:45,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:05:45,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:05:45,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:05:45,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:05:45,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (1/1) ... [2023-11-29 07:05:45,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:45,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:45,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:45,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-29 07:05:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:05:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:05:45,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:05:45,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:05:45,161 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:05:45,163 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:05:45,246 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:05:45,254 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:05:45,254 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 07:05:45,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:05:45 BoogieIcfgContainer [2023-11-29 07:05:45,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:05:45,257 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-29 07:05:45,257 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-29 07:05:45,261 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-29 07:05:45,262 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:05:45,262 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:05:44" (1/3) ... [2023-11-29 07:05:45,264 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@556cc4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:05:45, skipping insertion in model container [2023-11-29 07:05:45,264 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:05:45,264 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:05:44" (2/3) ... [2023-11-29 07:05:45,264 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@556cc4ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:05:45, skipping insertion in model container [2023-11-29 07:05:45,265 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-29 07:05:45,265 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:05:45" (3/3) ... [2023-11-29 07:05:45,266 INFO L332 chiAutomizerObserver]: Analyzing ICFG gr2006.i [2023-11-29 07:05:45,328 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-29 07:05:45,328 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-29 07:05:45,328 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-29 07:05:45,328 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-29 07:05:45,328 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-29 07:05:45,329 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-29 07:05:45,329 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-29 07:05:45,329 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-29 07:05:45,333 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:45,353 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 07:05:45,354 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:05:45,354 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:05:45,360 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 07:05:45,360 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-29 07:05:45,360 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-29 07:05:45,361 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:45,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 07:05:45,363 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:05:45,363 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:05:45,363 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-29 07:05:45,364 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-29 07:05:45,372 INFO L748 eck$LassoCheckResult]: Stem: 10#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 5#L28-2true [2023-11-29 07:05:45,373 INFO L750 eck$LassoCheckResult]: Loop: 5#L28-2true assume !false; 4#L29true assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 13#L29-2true assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 5#L28-2true [2023-11-29 07:05:45,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:45,380 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-29 07:05:45,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:45,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59149876] [2023-11-29 07:05:45,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:45,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:45,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:45,512 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:45,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:45,515 INFO L85 PathProgramCache]: Analyzing trace with hash 40880, now seen corresponding path program 1 times [2023-11-29 07:05:45,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:45,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345001080] [2023-11-29 07:05:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:45,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:45,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:45,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:45,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:45,539 INFO L85 PathProgramCache]: Analyzing trace with hash 28699822, now seen corresponding path program 1 times [2023-11-29 07:05:45,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:45,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991832841] [2023-11-29 07:05:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:45,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:45,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:45,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991832841] [2023-11-29 07:05:45,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991832841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:05:45,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:05:45,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:05:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798635610] [2023-11-29 07:05:45,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:05:45,710 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:05:45,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:05:45,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:05:45,711 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:05:45,711 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 07:05:45,712 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:45,712 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:05:45,712 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:05:45,712 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2023-11-29 07:05:45,712 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:05:45,712 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:05:45,731 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:45,741 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:45,750 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:45,759 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:45,814 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:05:45,814 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 07:05:45,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:45,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:45,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:45,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-11-29 07:05:45,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:45,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:45,844 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 07:05:45,844 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 07:05:45,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:05:45,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:45,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:45,852 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:45,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-11-29 07:05:45,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:45,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:45,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-11-29 07:05:45,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:45,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:45,876 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:45,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-11-29 07:05:45,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 07:05:45,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:45,967 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 07:05:45,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-11-29 07:05:45,971 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:05:45,971 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:05:45,971 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:05:45,971 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:05:45,971 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 07:05:45,971 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:45,972 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:05:45,972 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:05:45,972 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration1_Loop [2023-11-29 07:05:45,972 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:05:45,972 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:05:45,974 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:45,977 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:45,986 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:45,994 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,051 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:05:46,056 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 07:05:46,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-11-29 07:05:46,068 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 [2023-11-29 07:05:46,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:46,080 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:46,080 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:46,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:46,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:46,082 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:46,082 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:46,085 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 07:05:46,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-11-29 07:05:46,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-11-29 07:05:46,094 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 [2023-11-29 07:05:46,108 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:46,108 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:46,109 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:46,109 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:46,109 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:46,111 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:46,111 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:46,121 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 07:05:46,123 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-11-29 07:05:46,124 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 07:05:46,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,152 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-11-29 07:05:46,155 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 07:05:46,156 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 07:05:46,156 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 07:05:46,156 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-11-29 07:05:46,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-11-29 07:05:46,163 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 07:05:46,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:46,202 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:05:46,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:46,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:05:46,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:46,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:46,280 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 [2023-11-29 07:05:46,281 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:46,334 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 56 transitions. Complement of second has 8 states. [2023-11-29 07:05:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2023-11-29 07:05:46,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:46,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2023-11-29 07:05:46,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2023-11-29 07:05:46,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:46,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2023-11-29 07:05:46,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:46,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2023-11-29 07:05:46,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:46,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 56 transitions. [2023-11-29 07:05:46,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 07:05:46,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 10 states and 13 transitions. [2023-11-29 07:05:46,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2023-11-29 07:05:46,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-11-29 07:05:46,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2023-11-29 07:05:46,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 07:05:46,356 INFO L218 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-29 07:05:46,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2023-11-29 07:05:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-29 07:05:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 9 states have internal predecessors, (13), 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) [2023-11-29 07:05:46,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2023-11-29 07:05:46,380 INFO L240 hiAutomatonCegarLoop]: Abstraction has 10 states and 13 transitions. [2023-11-29 07:05:46,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:46,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:05:46,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:05:46,384 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:46,397 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2023-11-29 07:05:46,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2023-11-29 07:05:46,398 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 07:05:46,399 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2023-11-29 07:05:46,399 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2023-11-29 07:05:46,399 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-11-29 07:05:46,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2023-11-29 07:05:46,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:05:46,400 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-11-29 07:05:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2023-11-29 07:05:46,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2023-11-29 07:05:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 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) [2023-11-29 07:05:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-11-29 07:05:46,402 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-11-29 07:05:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:05:46,403 INFO L428 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-11-29 07:05:46,404 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-11-29 07:05:46,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-11-29 07:05:46,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 07:05:46,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:05:46,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:05:46,405 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2023-11-29 07:05:46,405 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-29 07:05:46,405 INFO L748 eck$LassoCheckResult]: Stem: 119#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 120#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 123#L28-2 assume !false; 117#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 118#L29-2 [2023-11-29 07:05:46,406 INFO L750 eck$LassoCheckResult]: Loop: 118#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 121#L28-2 assume !false; 122#L29 assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 118#L29-2 [2023-11-29 07:05:46,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:46,406 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2023-11-29 07:05:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:46,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145880639] [2023-11-29 07:05:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:46,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:46,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:46,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:46,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:46,427 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 2 times [2023-11-29 07:05:46,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:46,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952053254] [2023-11-29 07:05:46,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:46,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:46,434 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:46,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:46,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:46,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1810665941, now seen corresponding path program 1 times [2023-11-29 07:05:46,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:46,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048027870] [2023-11-29 07:05:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:46,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:46,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:46,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048027870] [2023-11-29 07:05:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048027870] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:05:46,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207337423] [2023-11-29 07:05:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:46,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:46,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,501 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 07:05:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:46,565 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:05:46,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:46,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:05:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:46,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207337423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:05:46,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:05:46,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-29 07:05:46,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742854339] [2023-11-29 07:05:46,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:05:46,647 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:05:46,647 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:05:46,647 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:05:46,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:05:46,648 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 07:05:46,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:05:46,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:05:46,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2023-11-29 07:05:46,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:05:46,648 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:05:46,649 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,655 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,662 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,665 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,702 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:05:46,703 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 07:05:46,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,707 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-11-29 07:05:46,709 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:46,709 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:46,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2023-11-29 07:05:46,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,731 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-11-29 07:05:46,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 07:05:46,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:46,790 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 07:05:46,790 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=49} Honda state: {ULTIMATE.start_main_~x~0#1=49} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [14, 1, 8] Nus: [0, 1] [2023-11-29 07:05:46,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-11-29 07:05:46,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,796 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-11-29 07:05:46,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:46,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:46,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-11-29 07:05:46,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,823 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-11-29 07:05:46,826 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 07:05:46,826 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:46,850 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 07:05:46,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-11-29 07:05:46,854 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:05:46,854 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:05:46,854 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:05:46,854 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:05:46,854 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 07:05:46,854 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,855 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:05:46,855 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:05:46,855 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration2_Loop [2023-11-29 07:05:46,855 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:05:46,855 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:05:46,856 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,865 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,872 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,876 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:46,921 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:05:46,921 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 07:05:46,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-11-29 07:05:46,928 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 [2023-11-29 07:05:46,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:46,941 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:46,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:46,942 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:46,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:46,943 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:46,943 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:46,946 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 07:05:46,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-11-29 07:05:46,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,952 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-11-29 07:05:46,955 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 [2023-11-29 07:05:46,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:46,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:46,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:46,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:46,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:46,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:46,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:46,971 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 07:05:46,974 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 07:05:46,974 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 07:05:46,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:46,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:46,975 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:46,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-11-29 07:05:46,978 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 07:05:46,978 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 07:05:46,978 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 07:05:46,978 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2023-11-29 07:05:46,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-11-29 07:05:46,983 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 07:05:47,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:47,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:05:47,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:47,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:05:47,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:47,051 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 [2023-11-29 07:05:47,051 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:47,071 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 16 transitions. Complement of second has 5 states. [2023-11-29 07:05:47,071 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 [2023-11-29 07:05:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2023-11-29 07:05:47,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2023-11-29 07:05:47,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:47,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2023-11-29 07:05:47,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:47,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2023-11-29 07:05:47,074 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:47,074 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2023-11-29 07:05:47,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 07:05:47,075 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2023-11-29 07:05:47,076 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-11-29 07:05:47,076 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-11-29 07:05:47,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2023-11-29 07:05:47,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 07:05:47,076 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-11-29 07:05:47,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2023-11-29 07:05:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-11-29 07:05:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 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) [2023-11-29 07:05:47,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2023-11-29 07:05:47,078 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2023-11-29 07:05:47,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:47,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 07:05:47,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 07:05:47,080 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 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) [2023-11-29 07:05:47,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:47,106 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2023-11-29 07:05:47,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2023-11-29 07:05:47,107 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-11-29 07:05:47,108 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2023-11-29 07:05:47,108 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2023-11-29 07:05:47,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2023-11-29 07:05:47,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2023-11-29 07:05:47,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:05:47,109 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-11-29 07:05:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2023-11-29 07:05:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2023-11-29 07:05:47,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 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) [2023-11-29 07:05:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-11-29 07:05:47,112 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-11-29 07:05:47,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 07:05:47,113 INFO L428 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-11-29 07:05:47,113 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-11-29 07:05:47,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2023-11-29 07:05:47,114 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-29 07:05:47,114 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:05:47,114 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:05:47,115 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2023-11-29 07:05:47,115 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-29 07:05:47,115 INFO L748 eck$LassoCheckResult]: Stem: 251#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 252#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 255#L28-2 assume !false; 253#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 254#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 256#L28-2 assume !false; 266#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 265#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 264#L28-2 assume !false; 263#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 262#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 261#L28-2 assume !false; 260#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 258#L29-2 [2023-11-29 07:05:47,115 INFO L750 eck$LassoCheckResult]: Loop: 258#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 259#L28-2 assume !false; 257#L29 assume !(main_~x~0#1 < 50);main_#t~post2#1 := main_~y~0#1;main_~y~0#1 := main_#t~post2#1 - 1;havoc main_#t~post2#1; 258#L29-2 [2023-11-29 07:05:47,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -227870477, now seen corresponding path program 1 times [2023-11-29 07:05:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698909251] [2023-11-29 07:05:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:47,129 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:47,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:47,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:47,142 INFO L85 PathProgramCache]: Analyzing trace with hash 51290, now seen corresponding path program 3 times [2023-11-29 07:05:47,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:47,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583821212] [2023-11-29 07:05:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:47,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:47,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:47,150 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:47,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:47,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1853936168, now seen corresponding path program 2 times [2023-11-29 07:05:47,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:47,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553550794] [2023-11-29 07:05:47,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:47,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:47,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:05:47,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553550794] [2023-11-29 07:05:47,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553550794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:05:47,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369990552] [2023-11-29 07:05:47,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 07:05:47,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:05:47,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:47,257 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:05:47,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 07:05:47,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 07:05:47,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 07:05:47,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 07:05:47,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:47,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:05:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:47,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369990552] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:05:47,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:05:47,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-29 07:05:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569850139] [2023-11-29 07:05:47,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:05:47,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-11-29 07:05:47,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-11-29 07:05:47,489 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:05:47,489 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:05:47,489 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:05:47,489 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:05:47,490 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 07:05:47,490 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:47,490 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:05:47,490 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:05:47,490 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2023-11-29 07:05:47,490 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:05:47,490 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:05:47,491 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:47,495 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:47,502 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:47,519 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:47,559 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:05:47,559 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 07:05:47,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:47,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:47,561 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:47,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-11-29 07:05:47,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:47,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:47,586 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 07:05:47,586 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 07:05:47,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-11-29 07:05:47,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:47,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:47,590 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:47,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-11-29 07:05:47,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:47,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:47,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-11-29 07:05:47,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:47,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:47,618 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:47,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-11-29 07:05:47,621 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 07:05:47,621 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:47,644 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 07:05:47,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-11-29 07:05:47,649 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:05:47,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:05:47,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:05:47,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:05:47,649 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 07:05:47,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:47,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:05:47,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:05:47,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration3_Loop [2023-11-29 07:05:47,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:05:47,650 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:05:47,651 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:47,653 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:47,660 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:47,666 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:47,700 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:05:47,700 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 07:05:47,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:47,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:47,702 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:47,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-11-29 07:05:47,705 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 [2023-11-29 07:05:47,716 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:47,716 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:47,716 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:47,716 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:47,716 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:47,717 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:47,717 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:47,719 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 07:05:47,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-11-29 07:05:47,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:47,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:47,723 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:47,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-11-29 07:05:47,726 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 [2023-11-29 07:05:47,739 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:47,739 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:47,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:47,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:47,740 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:47,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:47,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:47,746 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 07:05:47,748 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 07:05:47,748 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 07:05:47,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:47,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:47,750 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:47,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-11-29 07:05:47,756 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 07:05:47,756 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 07:05:47,757 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 07:05:47,757 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2023-11-29 07:05:47,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-11-29 07:05:47,762 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 07:05:47,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:47,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:05:47,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:47,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:05:47,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:47,850 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 [2023-11-29 07:05:47,850 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:47,866 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 5 states. [2023-11-29 07:05:47,866 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 [2023-11-29 07:05:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-29 07:05:47,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2023-11-29 07:05:47,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:47,868 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 07:05:47,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:47,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:05:47,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:47,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:05:47,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:47,947 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 [2023-11-29 07:05:47,947 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:47,961 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 5 states. [2023-11-29 07:05:47,962 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 [2023-11-29 07:05:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2023-11-29 07:05:47,963 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2023-11-29 07:05:47,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:47,964 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-11-29 07:05:47,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:47,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:05:47,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:48,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:05:48,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:48,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:48,043 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 [2023-11-29 07:05:48,043 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:48,061 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 27 transitions. Complement of second has 4 states. [2023-11-29 07:05:48,062 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 [2023-11-29 07:05:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-11-29 07:05:48,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2023-11-29 07:05:48,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:48,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2023-11-29 07:05:48,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:48,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2023-11-29 07:05:48,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:48,065 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2023-11-29 07:05:48,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-29 07:05:48,067 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2023-11-29 07:05:48,067 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-11-29 07:05:48,067 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2023-11-29 07:05:48,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2023-11-29 07:05:48,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 07:05:48,067 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2023-11-29 07:05:48,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2023-11-29 07:05:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-11-29 07:05:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2023-11-29 07:05:48,070 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2023-11-29 07:05:48,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:05:48,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 07:05:48,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-29 07:05:48,071 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 13 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 13 states have internal predecessors, (35), 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) [2023-11-29 07:05:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:05:48,118 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2023-11-29 07:05:48,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2023-11-29 07:05:48,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-29 07:05:48,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2023-11-29 07:05:48,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2023-11-29 07:05:48,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2023-11-29 07:05:48,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2023-11-29 07:05:48,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-11-29 07:05:48,122 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 39 transitions. [2023-11-29 07:05:48,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2023-11-29 07:05:48,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2023-11-29 07:05:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 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) [2023-11-29 07:05:48,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-11-29 07:05:48,125 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-11-29 07:05:48,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 07:05:48,127 INFO L428 stractBuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-11-29 07:05:48,127 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-11-29 07:05:48,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2023-11-29 07:05:48,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-11-29 07:05:48,128 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-29 07:05:48,128 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-29 07:05:48,129 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2023-11-29 07:05:48,129 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-29 07:05:48,130 INFO L748 eck$LassoCheckResult]: Stem: 672#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 673#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~post1#1, main_#t~post2#1, main_#t~post3#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 674#L28-2 assume !false; 668#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 669#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 676#L28-2 assume !false; 702#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 701#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 700#L28-2 assume !false; 699#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 698#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 697#L28-2 assume !false; 696#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 695#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 694#L28-2 assume !false; 693#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 692#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 691#L28-2 assume !false; 690#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 689#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 688#L28-2 assume !false; 687#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 686#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 685#L28-2 assume !false; 684#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 683#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 682#L28-2 assume !false; 681#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 680#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 677#L28-2 [2023-11-29 07:05:48,130 INFO L750 eck$LassoCheckResult]: Loop: 677#L28-2 assume !false; 679#L29 assume main_~x~0#1 < 50;main_#t~post1#1 := main_~y~0#1;main_~y~0#1 := 1 + main_#t~post1#1;havoc main_#t~post1#1; 678#L29-2 assume !(main_~y~0#1 < 0);main_#t~post3#1 := main_~x~0#1;main_~x~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 677#L28-2 [2023-11-29 07:05:48,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash 992319728, now seen corresponding path program 2 times [2023-11-29 07:05:48,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:48,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165767226] [2023-11-29 07:05:48,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:48,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:48,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:48,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:48,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash 40818, now seen corresponding path program 1 times [2023-11-29 07:05:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:48,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307718877] [2023-11-29 07:05:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:48,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:48,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:48,173 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:48,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:48,173 INFO L85 PathProgramCache]: Analyzing trace with hash -62870493, now seen corresponding path program 3 times [2023-11-29 07:05:48,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:05:48,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223512483] [2023-11-29 07:05:48,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:05:48,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:05:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:48,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:05:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:05:48,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:05:48,235 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:05:48,235 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:05:48,235 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:05:48,235 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:05:48,235 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-11-29 07:05:48,236 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,236 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:05:48,236 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:05:48,236 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration4_Loop [2023-11-29 07:05:48,236 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:05:48,236 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:05:48,237 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:48,243 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:48,245 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:48,251 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:48,283 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:05:48,283 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-11-29 07:05:48,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,285 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-11-29 07:05:48,289 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:48,289 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:48,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2023-11-29 07:05:48,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,306 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-11-29 07:05:48,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 07:05:48,309 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:48,350 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 07:05:48,350 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0#1=-1} Honda state: {ULTIMATE.start_main_~y~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~y~0#1=0}, {ULTIMATE.start_main_~y~0#1=1}, {ULTIMATE.start_main_~y~0#1=0}] Lambdas: [1, 1, 6] Nus: [0, 1] [2023-11-29 07:05:48,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-11-29 07:05:48,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,355 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-11-29 07:05:48,358 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:48,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:48,371 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-11-29 07:05:48,371 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post1#1=0} Honda state: {ULTIMATE.start_main_#t~post1#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-11-29 07:05:48,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2023-11-29 07:05:48,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,375 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-11-29 07:05:48,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-11-29 07:05:48,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:48,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-11-29 07:05:48,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,395 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-11-29 07:05:48,398 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-11-29 07:05:48,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-11-29 07:05:48,422 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-11-29 07:05:48,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-11-29 07:05:48,426 INFO L210 LassoAnalysis]: Preferences: [2023-11-29 07:05:48,426 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-11-29 07:05:48,426 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-11-29 07:05:48,426 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-11-29 07:05:48,426 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-11-29 07:05:48,426 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,426 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-11-29 07:05:48,426 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-11-29 07:05:48,426 INFO L133 ssoRankerPreferences]: Filename of dumped script: gr2006.i_Iteration4_Loop [2023-11-29 07:05:48,426 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-11-29 07:05:48,426 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-11-29 07:05:48,427 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:48,433 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:48,435 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:48,442 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-11-29 07:05:48,480 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-11-29 07:05:48,481 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-11-29 07:05:48,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,482 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-11-29 07:05:48,486 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 [2023-11-29 07:05:48,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:48,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:48,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:48,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:48,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:48,500 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:48,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:48,502 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 07:05:48,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2023-11-29 07:05:48,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,507 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-11-29 07:05:48,510 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 [2023-11-29 07:05:48,520 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:48,520 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:48,520 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:48,520 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:48,521 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:48,521 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:48,521 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:48,523 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-11-29 07:05:48,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2023-11-29 07:05:48,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,528 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-11-29 07:05:48,532 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 [2023-11-29 07:05:48,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-11-29 07:05:48,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-11-29 07:05:48,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-11-29 07:05:48,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-11-29 07:05:48,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-11-29 07:05:48,544 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-11-29 07:05:48,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-11-29 07:05:48,547 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-11-29 07:05:48,549 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-11-29 07:05:48,549 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-11-29 07:05:48,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-29 07:05:48,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:05:48,550 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-29 07:05:48,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-11-29 07:05:48,552 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-11-29 07:05:48,552 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-11-29 07:05:48,552 INFO L513 LassoAnalysis]: Proved termination. [2023-11-29 07:05:48,552 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 99 Supporting invariants [] [2023-11-29 07:05:48,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-11-29 07:05:48,557 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-11-29 07:05:48,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:05:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:48,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:05:48,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:05:48,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:05:48,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:05:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:05:48,649 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 [2023-11-29 07:05:48,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:48,669 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 65 transitions. Complement of second has 6 states. [2023-11-29 07:05:48,669 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 [2023-11-29 07:05:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:05:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2023-11-29 07:05:48,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2023-11-29 07:05:48,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:48,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2023-11-29 07:05:48,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:48,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2023-11-29 07:05:48,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-11-29 07:05:48,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2023-11-29 07:05:48,673 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 07:05:48,673 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2023-11-29 07:05:48,673 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-11-29 07:05:48,673 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-11-29 07:05:48,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-11-29 07:05:48,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:05:48,673 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:05:48,673 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:05:48,673 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:05:48,673 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-11-29 07:05:48,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-11-29 07:05:48,673 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-11-29 07:05:48,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-11-29 07:05:48,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:05:48 BoogieIcfgContainer [2023-11-29 07:05:48,680 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-29 07:05:48,681 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 07:05:48,681 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 07:05:48,681 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 07:05:48,681 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:05:45" (3/4) ... [2023-11-29 07:05:48,683 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 07:05:48,684 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 07:05:48,685 INFO L158 Benchmark]: Toolchain (without parser) took 3917.97ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 107.6MB in the beginning and 61.8MB in the end (delta: 45.8MB). Peak memory consumption was 74.8MB. Max. memory is 16.1GB. [2023-11-29 07:05:48,685 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:05:48,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.09ms. Allocated memory is still 138.4MB. Free memory was 107.0MB in the beginning and 97.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 07:05:48,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.24ms. Allocated memory is still 138.4MB. Free memory was 96.6MB in the beginning and 95.7MB in the end (delta: 937.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:05:48,686 INFO L158 Benchmark]: Boogie Preprocessor took 31.51ms. Allocated memory is still 138.4MB. Free memory was 95.7MB in the beginning and 94.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:05:48,686 INFO L158 Benchmark]: RCFGBuilder took 225.75ms. Allocated memory is still 138.4MB. Free memory was 94.0MB in the beginning and 84.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 07:05:48,687 INFO L158 Benchmark]: BuchiAutomizer took 3423.66ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 84.1MB in the beginning and 62.8MB in the end (delta: 21.2MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2023-11-29 07:05:48,687 INFO L158 Benchmark]: Witness Printer took 3.30ms. Allocated memory is still 167.8MB. Free memory was 62.8MB in the beginning and 61.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:05:48,689 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 104.9MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.09ms. Allocated memory is still 138.4MB. Free memory was 107.0MB in the beginning and 97.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.24ms. Allocated memory is still 138.4MB. Free memory was 96.6MB in the beginning and 95.7MB in the end (delta: 937.8kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.51ms. Allocated memory is still 138.4MB. Free memory was 95.7MB in the beginning and 94.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 225.75ms. Allocated memory is still 138.4MB. Free memory was 94.0MB in the beginning and 84.1MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3423.66ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 84.1MB in the beginning and 62.8MB in the end (delta: 21.2MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. * Witness Printer took 3.30ms. Allocated memory is still 167.8MB. Free memory was 62.8MB in the beginning and 61.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function ((2 * y) + 1) and consists of 3 locations. One deterministic module has affine ranking function ((-2 * x) + 99) and consists of 4 locations. One nondeterministic module has affine ranking function ((2 * y) + 1) and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 13 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 2.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 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, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 49 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-11-29 07:05:48,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2023-11-29 07:05:48,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-11-29 07:05:49,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 07:05:49,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 07:05:49,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a31d09d-20fc-4b87-abfa-c74b38ab3910/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE