./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e04fb08f 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_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_10-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:35:59,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:35:59,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:35:59,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:35:59,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:35:59,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:35:59,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:35:59,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:35:59,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:35:59,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:35:59,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:35:59,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:35:59,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:35:59,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:35:59,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:35:59,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:35:59,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:35:59,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:35:59,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:35:59,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:35:59,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:35:59,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:35:59,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:35:59,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:35:59,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:35:59,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:35:59,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:35:59,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:35:59,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:35:59,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:35:59,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:35:59,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:35:59,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:35:59,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:35:59,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:35:59,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:35:59,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:35:59,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:35:59,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:35:59,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:35:59,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:35:59,915 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-16 11:35:59,938 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:35:59,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:35:59,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:35:59,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:35:59,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:35:59,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:35:59,941 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:35:59,941 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 11:35:59,941 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 11:35:59,942 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 11:35:59,942 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 11:35:59,942 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 11:35:59,942 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 11:35:59,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:35:59,943 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:35:59,943 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:35:59,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:35:59,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:35:59,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:35:59,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 11:35:59,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 11:35:59,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 11:35:59,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:35:59,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:35:59,958 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 11:35:59,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:35:59,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 11:35:59,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:35:59,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:35:59,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:35:59,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:35:59,961 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 11:35:59,962 INFO L138 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_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6546395432109233bf3e1991428a566548dd822bb23ca198622322bf4db5a8a [2022-11-16 11:36:00,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:36:00,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:36:00,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:36:00,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:36:00,232 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:36:00,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/recursive-simple/fibo_10-2.c [2022-11-16 11:36:00,310 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/data/ef6db50c0/a4a18518c8dc4edd94c2647fee580215/FLAG45074106b [2022-11-16 11:36:00,860 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:36:00,861 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/sv-benchmarks/c/recursive-simple/fibo_10-2.c [2022-11-16 11:36:00,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/data/ef6db50c0/a4a18518c8dc4edd94c2647fee580215/FLAG45074106b [2022-11-16 11:36:01,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/data/ef6db50c0/a4a18518c8dc4edd94c2647fee580215 [2022-11-16 11:36:01,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:36:01,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:36:01,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:01,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:36:01,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:36:01,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fae10a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01, skipping insertion in model container [2022-11-16 11:36:01,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:36:01,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:36:01,470 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2022-11-16 11:36:01,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:01,485 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:36:01,506 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/sv-benchmarks/c/recursive-simple/fibo_10-2.c[743,756] [2022-11-16 11:36:01,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:36:01,523 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:36:01,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01 WrapperNode [2022-11-16 11:36:01,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:36:01,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:01,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:36:01,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:36:01,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,560 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-16 11:36:01,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:36:01,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:36:01,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:36:01,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:36:01,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,585 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:36:01,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:36:01,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:36:01,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:36:01,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (1/1) ... [2022-11-16 11:36:01,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:01,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:01,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:01,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 11:36:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:36:01,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:36:01,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:36:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:36:01,684 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-16 11:36:01,684 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-16 11:36:01,758 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:36:01,760 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:36:01,914 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:36:01,920 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:36:01,920 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:36:01,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:01 BoogieIcfgContainer [2022-11-16 11:36:01,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:36:01,924 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 11:36:01,924 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 11:36:01,928 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 11:36:01,929 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:36:01,929 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 11:36:01" (1/3) ... [2022-11-16 11:36:01,930 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5aad183d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:36:01, skipping insertion in model container [2022-11-16 11:36:01,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:36:01,931 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:36:01" (2/3) ... [2022-11-16 11:36:01,931 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5aad183d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 11:36:01, skipping insertion in model container [2022-11-16 11:36:01,931 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 11:36:01,932 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:01" (3/3) ... [2022-11-16 11:36:01,933 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_10-2.c [2022-11-16 11:36:02,042 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 11:36:02,043 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 11:36:02,043 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 11:36:02,043 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 11:36:02,043 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 11:36:02,043 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 11:36:02,043 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 11:36:02,044 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 11:36:02,048 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:36:02,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 11:36:02,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:36:02,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:36:02,105 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 11:36:02,115 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 11:36:02,115 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 11:36:02,116 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 11:36:02,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 11:36:02,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:36:02,118 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:36:02,119 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 11:36:02,119 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 11:36:02,129 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 5#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 6#fiboENTRYtrue [2022-11-16 11:36:02,130 INFO L750 eck$LassoCheckResult]: Loop: 6#fiboENTRYtrue ~n := #in~n; 7#L8true assume !(~n < 1); 9#L10true assume !(1 == ~n); 14#L13true call #t~ret4 := fibo(~n - 1);< 6#fiboENTRYtrue [2022-11-16 11:36:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-11-16 11:36:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:02,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088671938] [2022-11-16 11:36:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:02,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:02,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:36:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:02,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:36:02,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-11-16 11:36:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:02,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064799296] [2022-11-16 11:36:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:02,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:02,343 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:36:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:02,353 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:36:02,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:02,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-11-16 11:36:02,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:02,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017800300] [2022-11-16 11:36:02,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:02,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:02,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:36:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:02,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:36:02,574 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:02,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:02,575 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:02,575 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:02,575 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:36:02,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:02,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:02,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:02,577 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2022-11-16 11:36:02,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:02,577 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:02,596 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:02,609 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:02,614 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:02,620 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:02,635 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:02,713 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:02,714 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:36:02,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:02,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:02,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:02,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-16 11:36:02,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:02,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:02,802 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:02,803 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:02,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:02,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:02,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:02,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:02,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-16 11:36:02,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:02,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:02,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:02,957 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:02,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-11-16 11:36:02,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:02,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:02,987 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:03,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:03,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:03,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-16 11:36:03,024 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:03,024 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:03,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:03,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:03,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:03,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:03,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:03,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:03,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-16 11:36:03,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:03,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:03,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:03,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:03,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:36:03,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:03,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-16 11:36:03,221 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:36:03,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:03,231 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:03,231 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:03,232 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:03,232 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:03,232 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:36:03,232 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:03,232 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:03,232 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:03,232 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration1_Loop [2022-11-16 11:36:03,233 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:03,233 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:03,234 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:03,263 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:03,266 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:03,272 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:03,282 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:03,366 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:03,372 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:36:03,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:03,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:03,375 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:03,386 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-16 11:36:03,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-16 11:36:03,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:03,400 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:03,401 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:03,401 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:03,401 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:03,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:03,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:03,411 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:03,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:03,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:03,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:03,423 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:03,431 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 [2022-11-16 11:36:03,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-16 11:36:03,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:03,445 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:03,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:03,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:03,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:03,447 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:03,447 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:03,463 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:03,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:03,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:03,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:03,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:03,481 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 [2022-11-16 11:36:03,494 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:03,494 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:03,494 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:03,494 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:03,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:03,495 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:03,495 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:03,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-16 11:36:03,515 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:03,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:03,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:03,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:03,526 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:03,535 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 [2022-11-16 11:36:03,548 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:03,548 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:03,548 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:03,548 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:03,548 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:03,550 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:03,550 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:03,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-16 11:36:03,567 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:36:03,572 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:36:03,572 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:36:03,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:03,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:03,577 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:03,585 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:36:03,585 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:36:03,585 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:36:03,586 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-16 11:36:03,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-16 11:36:03,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:03,598 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:36:03,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:03,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:36:03,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:03,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:36:03,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:03,824 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-16 11:36:03,827 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:03,999 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-11-16 11:36:04,001 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 [2022-11-16 11:36:04,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:04,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-16 11:36:04,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-16 11:36:04,017 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:04,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-16 11:36:04,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:04,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-16 11:36:04,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:04,022 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-11-16 11:36:04,037 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 11:36:04,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-11-16 11:36:04,054 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-16 11:36:04,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-16 11:36:04,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-11-16 11:36:04,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:04,057 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-16 11:36:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-11-16 11:36:04,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-16 11:36:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:36:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-16 11:36:04,099 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-16 11:36:04,099 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-16 11:36:04,099 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 11:36:04,099 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-16 11:36:04,100 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 11:36:04,100 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:36:04,101 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:36:04,102 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:04,102 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:04,103 INFO L748 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 128#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 131#fiboENTRY ~n := #in~n; 132#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 127#fiboENTRY ~n := #in~n; 133#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#33#return; 124#L13-1 [2022-11-16 11:36:04,103 INFO L750 eck$LassoCheckResult]: Loop: 124#L13-1 call #t~ret5 := fibo(~n - 2);< 125#fiboENTRY ~n := #in~n; 140#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 123#L13 call #t~ret4 := fibo(~n - 1);< 125#fiboENTRY ~n := #in~n; 140#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 138#fiboEXIT >#33#return; 124#L13-1 [2022-11-16 11:36:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-11-16 11:36:04,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:04,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66253118] [2022-11-16 11:36:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:04,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:36:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:04,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:04,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:04,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66253118] [2022-11-16 11:36:04,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66253118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:04,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:04,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:36:04,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829308053] [2022-11-16 11:36:04,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:04,296 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 11:36:04,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:04,296 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-11-16 11:36:04,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:04,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823570560] [2022-11-16 11:36:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:04,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 11:36:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:36:04,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:04,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823570560] [2022-11-16 11:36:04,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823570560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:36:04,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:36:04,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:36:04,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457510726] [2022-11-16 11:36:04,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:36:04,411 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 11:36:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:36:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:36:04,416 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:04,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:04,514 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-16 11:36:04,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-16 11:36:04,520 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 11:36:04,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-11-16 11:36:04,529 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-16 11:36:04,530 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-16 11:36:04,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-16 11:36:04,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:04,531 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-16 11:36:04,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-16 11:36:04,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-16 11:36:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 11:36:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-16 11:36:04,541 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-16 11:36:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:36:04,542 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-16 11:36:04,543 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 11:36:04,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-11-16 11:36:04,545 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-16 11:36:04,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:36:04,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:36:04,547 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:04,547 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:04,548 INFO L748 eck$LassoCheckResult]: Stem: 194#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 195#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 200#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 204#fiboENTRY ~n := #in~n; 206#L8 assume !(~n < 1); 210#L10 assume !(1 == ~n); 199#L13 call #t~ret4 := fibo(~n - 1);< 201#fiboENTRY ~n := #in~n; 207#L8 assume !(~n < 1); 209#L10 assume 1 == ~n;#res := 1; 211#fiboFINAL assume true; 213#fiboEXIT >#33#return; 197#L13-1 [2022-11-16 11:36:04,548 INFO L750 eck$LassoCheckResult]: Loop: 197#L13-1 call #t~ret5 := fibo(~n - 2);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 215#fiboFINAL assume true; 212#fiboEXIT >#33#return; 197#L13-1 [2022-11-16 11:36:04,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-11-16 11:36:04,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:04,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939314600] [2022-11-16 11:36:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:04,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-16 11:36:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:04,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:04,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939314600] [2022-11-16 11:36:04,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939314600] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:04,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55686368] [2022-11-16 11:36:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:04,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:04,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:04,738 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:04,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:36:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:04,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:36:04,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:04,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:04,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:04,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55686368] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:04,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:36:04,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-16 11:36:04,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333082816] [2022-11-16 11:36:04,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:04,955 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 11:36:04,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:04,956 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-11-16 11:36:04,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:04,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772126289] [2022-11-16 11:36:04,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:04,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:04,961 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:36:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:04,966 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:36:05,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:05,118 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:05,119 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:05,119 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:05,119 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:05,119 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:36:05,119 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:05,119 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:05,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:05,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2022-11-16 11:36:05,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:05,119 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:05,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:05,124 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:05,127 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:05,135 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:05,178 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:05,178 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:36:05,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:05,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:05,180 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:05,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-16 11:36:05,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:05,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:05,230 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:05,230 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:05,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:05,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:05,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:05,240 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:05,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-16 11:36:05,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:05,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:05,273 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:05,273 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:05,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:05,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:05,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:05,310 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:05,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:05,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:05,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-16 11:36:05,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:05,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:05,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:05,356 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:05,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:36:05,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:05,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-16 11:36:05,983 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:36:05,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:05,987 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:05,988 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:05,988 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:05,988 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:05,988 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:36:05,988 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:05,988 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:05,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:05,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration3_Loop [2022-11-16 11:36:05,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:05,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:05,989 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:06,006 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:06,009 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:06,017 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:06,058 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:06,059 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:36:06,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:06,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:06,060 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:06,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-16 11:36:06,071 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 [2022-11-16 11:36:06,083 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:06,083 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:06,084 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:06,084 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:06,084 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:06,085 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:06,086 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:06,095 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:06,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:06,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:06,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:06,105 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:06,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-16 11:36:06,108 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 [2022-11-16 11:36:06,118 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:06,118 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:06,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:06,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:06,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:06,119 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:06,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:06,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:06,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:06,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:06,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:06,132 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:06,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-16 11:36:06,140 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 [2022-11-16 11:36:06,150 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:06,150 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:06,150 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:06,150 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:06,150 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:06,153 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:06,153 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:06,160 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:36:06,183 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:36:06,183 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:36:06,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:06,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:06,185 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:06,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-16 11:36:06,189 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:36:06,190 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:36:06,190 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:36:06,190 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-16 11:36:06,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:06,196 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:36:06,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:06,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:36:06,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:06,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:36:06,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:06,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:06,485 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-16 11:36:06,486 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:36:06,725 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-11-16 11:36:06,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:06,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:36:06,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-16 11:36:06,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-11-16 11:36:06,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:06,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-11-16 11:36:06,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:06,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-11-16 11:36:06,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:06,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-11-16 11:36:06,746 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-16 11:36:06,753 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-11-16 11:36:06,754 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-16 11:36:06,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-11-16 11:36:06,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-11-16 11:36:06,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:06,755 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-16 11:36:06,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-11-16 11:36:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-16 11:36:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-11-16 11:36:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-16 11:36:06,786 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-16 11:36:06,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:36:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:36:06,790 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:36:06,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:06,934 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-11-16 11:36:06,934 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-11-16 11:36:06,937 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-16 11:36:06,940 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-11-16 11:36:06,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-11-16 11:36:06,940 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-11-16 11:36:06,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-11-16 11:36:06,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:06,941 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-11-16 11:36:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-11-16 11:36:06,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-11-16 11:36:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-16 11:36:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-11-16 11:36:06,951 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-16 11:36:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:36:06,953 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-16 11:36:06,953 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 11:36:06,953 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-11-16 11:36:06,955 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-16 11:36:06,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:36:06,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:36:06,956 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:06,956 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:06,957 INFO L748 eck$LassoCheckResult]: Stem: 787#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 788#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 802#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 804#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 801#L13 call #t~ret4 := fibo(~n - 1);< 803#fiboENTRY ~n := #in~n; 813#L8 assume !(~n < 1); 818#L10 assume !(1 == ~n); 824#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 850#L8 assume !(~n < 1); 848#L10 assume 1 == ~n;#res := 1; 846#fiboFINAL assume true; 844#fiboEXIT >#33#return; 790#L13-1 call #t~ret5 := fibo(~n - 2);< 842#fiboENTRY ~n := #in~n; 890#L8 assume ~n < 1;#res := 0; 889#fiboFINAL assume true; 888#fiboEXIT >#35#return; 887#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#fiboFINAL assume true; 877#fiboEXIT >#33#return; 820#L13-1 [2022-11-16 11:36:06,957 INFO L750 eck$LassoCheckResult]: Loop: 820#L13-1 call #t~ret5 := fibo(~n - 2);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume 1 == ~n;#res := 1; 823#fiboFINAL assume true; 874#fiboEXIT >#33#return; 820#L13-1 [2022-11-16 11:36:06,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:06,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-11-16 11:36:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:06,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275010078] [2022-11-16 11:36:06,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:06,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:36:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:07,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:07,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 11:36:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:36:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:36:07,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:07,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275010078] [2022-11-16 11:36:07,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275010078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:07,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347431090] [2022-11-16 11:36:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:07,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:07,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:07,249 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:07,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 11:36:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:07,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:36:07,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:36:07,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:07,806 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:36:07,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347431090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:07,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:36:07,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 22 [2022-11-16 11:36:07,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053935950] [2022-11-16 11:36:07,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:07,809 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 11:36:07,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:07,810 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 2 times [2022-11-16 11:36:07,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:07,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025568361] [2022-11-16 11:36:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:07,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:07,819 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:36:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:07,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:36:07,997 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:07,997 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:07,997 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:07,997 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:07,997 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:36:07,997 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:07,997 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:07,997 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:07,998 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2022-11-16 11:36:07,998 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:07,998 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:07,999 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:08,002 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:08,011 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:08,014 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:08,073 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:08,073 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:36:08,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:08,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:08,075 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:08,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-16 11:36:08,079 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:08,079 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:08,093 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:08,093 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:08,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:08,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:08,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:08,098 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:08,112 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:08,112 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:08,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-16 11:36:08,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:08,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:08,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:08,163 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:08,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-16 11:36:08,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:36:08,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:08,909 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:36:08,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-16 11:36:08,915 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:08,915 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:08,915 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:08,915 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:08,915 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:36:08,915 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:08,915 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:08,915 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:08,915 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration4_Loop [2022-11-16 11:36:08,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:08,915 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:08,916 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:08,928 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:08,936 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:08,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:08,984 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:08,984 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:36:08,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:08,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:08,986 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:08,996 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 [2022-11-16 11:36:09,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:09,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:09,010 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:09,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:09,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:09,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-16 11:36:09,011 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:09,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:09,035 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:09,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:09,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:09,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:09,045 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:09,049 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 [2022-11-16 11:36:09,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:09,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:09,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:09,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:09,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:09,065 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:09,065 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:09,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-16 11:36:09,083 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:36:09,085 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 11:36:09,086 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 11:36:09,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:09,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:09,089 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:09,092 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:36:09,092 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:36:09,092 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:36:09,092 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-16 11:36:09,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-16 11:36:09,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:09,097 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:36:09,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:09,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:36:09,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:09,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:09,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:36:09,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:09,573 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-16 11:36:09,575 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:36:09,812 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 175 states and 233 transitions. Complement of second has 33 states. [2022-11-16 11:36:09,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:36:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-16 11:36:09,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-16 11:36:09,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:09,815 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:36:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:09,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:36:09,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:10,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:36:10,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:10,228 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-16 11:36:10,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:36:10,401 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 403 transitions. Complement of second has 25 states. [2022-11-16 11:36:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:36:10,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-11-16 11:36:10,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-16 11:36:10,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:10,406 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:36:10,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:10,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:36:10,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:10,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:36:10,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:10,793 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-16 11:36:10,793 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:36:11,037 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 858 states and 1136 transitions. Complement of second has 130 states. [2022-11-16 11:36:11,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:11,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 11:36:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-11-16 11:36:11,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-16 11:36:11,045 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:11,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-11-16 11:36:11,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:11,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-11-16 11:36:11,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:11,049 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-11-16 11:36:11,064 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-16 11:36:11,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-11-16 11:36:11,084 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-11-16 11:36:11,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-11-16 11:36:11,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-11-16 11:36:11,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:11,086 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-11-16 11:36:11,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-11-16 11:36:11,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-11-16 11:36:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (136), 70 states have call predecessors, (136), 71 states have call successors, (136) [2022-11-16 11:36:11,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-11-16 11:36:11,118 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-11-16 11:36:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:11,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:36:11,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:36:11,119 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 23 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 15 states have internal predecessors, (41), 13 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:36:11,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:11,615 INFO L93 Difference]: Finished difference Result 658 states and 956 transitions. [2022-11-16 11:36:11,615 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 658 states and 956 transitions. [2022-11-16 11:36:11,627 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 11:36:11,638 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 658 states to 633 states and 920 transitions. [2022-11-16 11:36:11,639 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 276 [2022-11-16 11:36:11,640 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 279 [2022-11-16 11:36:11,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 633 states and 920 transitions. [2022-11-16 11:36:11,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:11,640 INFO L218 hiAutomatonCegarLoop]: Abstraction has 633 states and 920 transitions. [2022-11-16 11:36:11,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states and 920 transitions. [2022-11-16 11:36:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 600. [2022-11-16 11:36:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 367 states have (on average 1.1662125340599454) internal successors, (428), 386 states have internal predecessors, (428), 144 states have call successors, (158), 73 states have call predecessors, (158), 89 states have return successors, (293), 140 states have call predecessors, (293), 135 states have call successors, (293) [2022-11-16 11:36:11,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 879 transitions. [2022-11-16 11:36:11,724 INFO L240 hiAutomatonCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-11-16 11:36:11,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:36:11,728 INFO L428 stractBuchiCegarLoop]: Abstraction has 600 states and 879 transitions. [2022-11-16 11:36:11,729 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-16 11:36:11,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 600 states and 879 transitions. [2022-11-16 11:36:11,733 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 11:36:11,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:36:11,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:36:11,736 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:11,736 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 11:36:11,737 INFO L748 eck$LassoCheckResult]: Stem: 4112#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 4113#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 4129#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 4130#fiboENTRY ~n := #in~n; 4194#L8 assume !(~n < 1); 4193#L10 assume !(1 == ~n); 4189#L13 call #t~ret4 := fibo(~n - 1);< 4192#fiboENTRY ~n := #in~n; 4191#L8 assume !(~n < 1); 4190#L10 assume !(1 == ~n); 4185#L13 call #t~ret4 := fibo(~n - 1);< 4188#fiboENTRY ~n := #in~n; 4187#L8 assume !(~n < 1); 4186#L10 assume !(1 == ~n); 4181#L13 call #t~ret4 := fibo(~n - 1);< 4184#fiboENTRY ~n := #in~n; 4183#L8 assume !(~n < 1); 4182#L10 assume !(1 == ~n); 4162#L13 call #t~ret4 := fibo(~n - 1);< 4180#fiboENTRY ~n := #in~n; 4179#L8 assume !(~n < 1); 4178#L10 assume !(1 == ~n); 4175#L13 call #t~ret4 := fibo(~n - 1);< 4177#fiboENTRY ~n := #in~n; 4176#L8 assume !(~n < 1); 4174#L10 assume !(1 == ~n); 4171#L13 call #t~ret4 := fibo(~n - 1);< 4169#fiboENTRY ~n := #in~n; 4172#L8 assume !(~n < 1); 4310#L10 assume !(1 == ~n); 4170#L13 call #t~ret4 := fibo(~n - 1);< 4169#fiboENTRY ~n := #in~n; 4173#L8 assume !(~n < 1); 4626#L10 assume 1 == ~n;#res := 1; 4625#fiboFINAL assume true; 4389#fiboEXIT >#33#return; 4297#L13-1 call #t~ret5 := fibo(~n - 2);< 4299#fiboENTRY ~n := #in~n; 4602#L8 assume !(~n < 1); 4378#L10 assume !(1 == ~n); 4379#L13 call #t~ret4 := fibo(~n - 1);< 4505#fiboENTRY ~n := #in~n; 4518#L8 assume !(~n < 1); 4507#L10 assume !(1 == ~n); 4508#L13 call #t~ret4 := fibo(~n - 1);< 4525#fiboENTRY [2022-11-16 11:36:11,737 INFO L750 eck$LassoCheckResult]: Loop: 4525#fiboENTRY ~n := #in~n; 4534#L8 assume !(~n < 1); 4530#L10 assume !(1 == ~n); 4520#L13 call #t~ret4 := fibo(~n - 1);< 4525#fiboENTRY [2022-11-16 11:36:11,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:11,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1242269160, now seen corresponding path program 1 times [2022-11-16 11:36:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:11,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662903847] [2022-11-16 11:36:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:11,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:12,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:36:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:36:12,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:12,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662903847] [2022-11-16 11:36:12,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662903847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:12,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282672017] [2022-11-16 11:36:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:12,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:12,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:12,161 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:12,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-16 11:36:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:12,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:36:12,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:12,322 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:36:12,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 62 proven. 105 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:36:12,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282672017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:12,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:36:12,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 24 [2022-11-16 11:36:12,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200255563] [2022-11-16 11:36:12,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:12,635 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 11:36:12,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2022-11-16 11:36:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:12,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883519973] [2022-11-16 11:36:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:12,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:12,639 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:36:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:12,641 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:36:12,688 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:12,688 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:12,688 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:12,688 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:12,688 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:36:12,688 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:12,689 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:12,689 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:12,689 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2022-11-16 11:36:12,689 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:12,689 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:12,691 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:12,693 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:12,696 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:12,699 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:12,707 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:12,754 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:12,754 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:36:12,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:12,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:12,757 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:12,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:12,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:12,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-16 11:36:12,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:12,787 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:12,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:12,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:12,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:12,797 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:12,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:12,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:12,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-16 11:36:12,839 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:12,839 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:12,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:12,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:12,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:12,849 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:12,853 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:12,853 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:12,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-16 11:36:12,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:12,895 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:12,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:12,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:12,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:12,905 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:12,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:12,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:12,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-16 11:36:12,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:12,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:12,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:12,944 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:12,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:36:12,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:12,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-16 11:36:13,032 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:36:13,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:13,041 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:13,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:13,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:13,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:13,041 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:36:13,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:13,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:13,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:13,042 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration5_Loop [2022-11-16 11:36:13,042 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:13,042 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:13,042 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:13,045 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:13,048 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:13,050 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:13,053 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:13,095 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:13,096 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:36:13,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:13,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:13,097 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:13,104 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 [2022-11-16 11:36:13,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:13,117 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:13,117 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:13,117 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:13,117 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:13,118 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:13,119 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:13,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-16 11:36:13,131 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:13,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:13,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:13,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:13,137 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:13,141 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 [2022-11-16 11:36:13,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:13,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:13,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:13,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:13,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:13,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:13,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:13,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-16 11:36:13,175 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:13,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:13,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:13,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:13,184 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:13,188 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 [2022-11-16 11:36:13,200 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:13,200 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:13,200 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:13,201 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:13,201 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:13,201 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:13,201 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:13,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-16 11:36:13,215 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:13,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:13,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:13,223 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:13,226 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 [2022-11-16 11:36:13,239 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:13,239 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:13,239 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:13,239 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:13,239 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:13,240 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:13,240 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:13,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-16 11:36:13,263 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:13,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:13,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:13,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:13,272 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:13,293 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 [2022-11-16 11:36:13,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:13,306 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:13,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:13,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:13,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:13,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:13,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:13,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-16 11:36:13,322 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:36:13,325 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 11:36:13,325 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 11:36:13,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:13,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:13,329 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:13,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-16 11:36:13,332 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:36:13,332 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:36:13,332 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:36:13,332 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-16 11:36:13,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:13,341 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:36:13,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:13,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:36:13,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:13,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:36:13,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:13,563 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 11:36:13,563 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:13,632 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-11-16 11:36:13,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-16 11:36:13,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-16 11:36:13,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:13,638 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:36:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:13,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:36:13,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:13,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:13,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:36:13,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:13,891 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 11:36:13,891 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:13,960 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 622 states and 901 transitions. Complement of second has 13 states. [2022-11-16 11:36:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:13,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-16 11:36:13,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-16 11:36:13,964 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:13,964 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:36:13,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:36:14,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:14,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:36:14,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:14,227 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-16 11:36:14,227 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:14,320 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 600 states and 879 transitions. cyclomatic complexity: 289. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 811 states and 1113 transitions. Complement of second has 14 states. [2022-11-16 11:36:14,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-16 11:36:14,322 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 4 letters. [2022-11-16 11:36:14,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:14,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 49 letters. Loop has 4 letters. [2022-11-16 11:36:14,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:14,324 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 45 letters. Loop has 8 letters. [2022-11-16 11:36:14,324 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:14,324 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 811 states and 1113 transitions. [2022-11-16 11:36:14,350 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 11:36:14,359 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 811 states to 662 states and 952 transitions. [2022-11-16 11:36:14,359 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 235 [2022-11-16 11:36:14,360 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 244 [2022-11-16 11:36:14,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 662 states and 952 transitions. [2022-11-16 11:36:14,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:14,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:14,361 INFO L218 hiAutomatonCegarLoop]: Abstraction has 662 states and 952 transitions. [2022-11-16 11:36:14,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states and 952 transitions. [2022-11-16 11:36:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 632. [2022-11-16 11:36:14,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 394 states have (on average 1.1548223350253808) internal successors, (455), 418 states have internal predecessors, (455), 144 states have call successors, (158), 73 states have call predecessors, (158), 94 states have return successors, (303), 140 states have call predecessors, (303), 135 states have call successors, (303) [2022-11-16 11:36:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 916 transitions. [2022-11-16 11:36:14,385 INFO L240 hiAutomatonCegarLoop]: Abstraction has 632 states and 916 transitions. [2022-11-16 11:36:14,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 11:36:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:36:14,386 INFO L87 Difference]: Start difference. First operand 632 states and 916 transitions. Second operand has 24 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 16 states have internal predecessors, (40), 11 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:36:14,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:14,851 INFO L93 Difference]: Finished difference Result 901 states and 1327 transitions. [2022-11-16 11:36:14,851 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 901 states and 1327 transitions. [2022-11-16 11:36:14,862 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 11:36:14,873 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 901 states to 858 states and 1265 transitions. [2022-11-16 11:36:14,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 300 [2022-11-16 11:36:14,874 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 306 [2022-11-16 11:36:14,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 858 states and 1265 transitions. [2022-11-16 11:36:14,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:14,875 INFO L218 hiAutomatonCegarLoop]: Abstraction has 858 states and 1265 transitions. [2022-11-16 11:36:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states and 1265 transitions. [2022-11-16 11:36:14,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 789. [2022-11-16 11:36:14,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 491 states have (on average 1.1344195519348268) internal successors, (557), 520 states have internal predecessors, (557), 190 states have call successors, (206), 98 states have call predecessors, (206), 108 states have return successors, (366), 170 states have call predecessors, (366), 178 states have call successors, (366) [2022-11-16 11:36:14,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1129 transitions. [2022-11-16 11:36:14,903 INFO L240 hiAutomatonCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-11-16 11:36:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:36:14,904 INFO L428 stractBuchiCegarLoop]: Abstraction has 789 states and 1129 transitions. [2022-11-16 11:36:14,904 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-16 11:36:14,904 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 789 states and 1129 transitions. [2022-11-16 11:36:14,909 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 11:36:14,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 11:36:14,910 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 11:36:14,911 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [13, 13, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:36:14,911 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-16 11:36:14,911 INFO L748 eck$LassoCheckResult]: Stem: 9124#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(12, 2);call #Ultimate.allocInit(12, 3); 9125#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 10; 9141#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 9142#fiboENTRY ~n := #in~n; 9347#L8 assume !(~n < 1); 9339#L10 assume !(1 == ~n); 9336#L13 call #t~ret4 := fibo(~n - 1);< 9337#fiboENTRY ~n := #in~n; 9382#L8 assume !(~n < 1); 9380#L10 assume !(1 == ~n); 9324#L13 call #t~ret4 := fibo(~n - 1);< 9376#fiboENTRY ~n := #in~n; 9669#L8 assume !(~n < 1); 9659#L10 assume !(1 == ~n); 9369#L13 call #t~ret4 := fibo(~n - 1);< 9445#fiboENTRY ~n := #in~n; 9463#L8 assume !(~n < 1); 9461#L10 assume !(1 == ~n); 9453#L13 call #t~ret4 := fibo(~n - 1);< 9454#fiboENTRY ~n := #in~n; 9526#L8 assume !(~n < 1); 9524#L10 assume !(1 == ~n); 9449#L13 call #t~ret4 := fibo(~n - 1);< 9522#fiboENTRY ~n := #in~n; 9602#L8 assume !(~n < 1); 9598#L10 assume !(1 == ~n); 9167#L13 call #t~ret4 := fibo(~n - 1);< 9590#fiboENTRY ~n := #in~n; 9629#L8 assume !(~n < 1); 9628#L10 assume !(1 == ~n); 9594#L13 call #t~ret4 := fibo(~n - 1);< 9627#fiboENTRY ~n := #in~n; 9676#L8 assume !(~n < 1); 9675#L10 assume !(1 == ~n); 9636#L13 call #t~ret4 := fibo(~n - 1);< 9640#fiboENTRY ~n := #in~n; 9667#L8 assume !(~n < 1); 9666#L10 assume !(1 == ~n); 9637#L13 call #t~ret4 := fibo(~n - 1);< 9640#fiboENTRY ~n := #in~n; 9668#L8 assume !(~n < 1); 9721#L10 assume 1 == ~n;#res := 1; 9719#fiboFINAL assume true; 9711#fiboEXIT >#33#return; 9705#L13-1 call #t~ret5 := fibo(~n - 2);< 9708#fiboENTRY ~n := #in~n; 9778#L8 assume !(~n < 1); 9741#L10 assume !(1 == ~n); 9162#L13 call #t~ret4 := fibo(~n - 1);< 9173#fiboENTRY ~n := #in~n; 9174#L8 assume !(~n < 1); 9849#L10 assume !(1 == ~n); 9178#L13 call #t~ret4 := fibo(~n - 1);< 9175#fiboENTRY ~n := #in~n; 9180#L8 assume !(~n < 1); 9845#L10 assume !(1 == ~n); 9177#L13 [2022-11-16 11:36:14,911 INFO L750 eck$LassoCheckResult]: Loop: 9177#L13 call #t~ret4 := fibo(~n - 1);< 9175#fiboENTRY ~n := #in~n; 9180#L8 assume !(~n < 1); 9845#L10 assume !(1 == ~n); 9177#L13 [2022-11-16 11:36:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:14,912 INFO L85 PathProgramCache]: Analyzing trace with hash -486527177, now seen corresponding path program 2 times [2022-11-16 11:36:14,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349316090] [2022-11-16 11:36:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:14,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:36:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:36:15,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:36:15,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349316090] [2022-11-16 11:36:15,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349316090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:15,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501209118] [2022-11-16 11:36:15,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:36:15,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:36:15,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:15,327 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:36:15,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-16 11:36:15,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:36:15,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:36:15,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-16 11:36:15,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:36:15,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:36:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 256 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:36:15,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501209118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:15,779 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:36:15,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 23 [2022-11-16 11:36:15,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681307154] [2022-11-16 11:36:15,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:15,780 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 11:36:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:15,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1893846, now seen corresponding path program 3 times [2022-11-16 11:36:15,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:36:15,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728724060] [2022-11-16 11:36:15,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:36:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:36:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:15,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:36:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:36:15,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:36:15,850 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:15,850 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:15,850 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:15,851 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:15,851 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 11:36:15,851 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:15,851 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:15,851 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:15,851 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2022-11-16 11:36:15,851 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:15,851 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:15,852 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:15,854 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:15,863 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:15,865 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:15,917 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:15,917 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 11:36:15,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:15,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:15,923 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:15,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:15,928 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:15,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-16 11:36:15,957 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 11:36:15,957 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 11:36:15,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:15,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:15,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:15,968 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:15,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 11:36:15,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:15,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-16 11:36:16,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:16,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:16,014 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:16,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 11:36:16,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 11:36:16,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-16 11:36:16,931 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 11:36:16,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:16,939 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 11:36:16,939 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 11:36:16,939 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 11:36:16,939 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 11:36:16,939 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 11:36:16,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:16,940 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 11:36:16,940 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 11:36:16,940 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_10-2.c_Iteration6_Loop [2022-11-16 11:36:16,940 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 11:36:16,940 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 11:36:16,941 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:16,943 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:16,950 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:16,953 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-16 11:36:17,023 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 11:36:17,023 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 11:36:17,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:17,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:17,026 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:17,030 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 [2022-11-16 11:36:17,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:17,042 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:17,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:17,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:17,043 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:17,043 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:17,044 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:17,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-16 11:36:17,045 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:17,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:17,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:17,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:17,055 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:17,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-16 11:36:17,059 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 [2022-11-16 11:36:17,068 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:17,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:17,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:17,069 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:17,069 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:17,069 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:17,069 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:17,071 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:17,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:17,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:17,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:17,078 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:17,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-16 11:36:17,081 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 [2022-11-16 11:36:17,091 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:17,091 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:17,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:17,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:17,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:17,091 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:17,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:17,098 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 11:36:17,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-11-16 11:36:17,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:17,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:17,102 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:17,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-16 11:36:17,105 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 [2022-11-16 11:36:17,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 11:36:17,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 11:36:17,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 11:36:17,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 11:36:17,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 11:36:17,116 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 11:36:17,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 11:36:17,123 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 11:36:17,125 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 11:36:17,125 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 11:36:17,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 11:36:17,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:36:17,127 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 11:36:17,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-16 11:36:17,130 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 11:36:17,130 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 11:36:17,130 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 11:36:17,130 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-16 11:36:17,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2022-11-16 11:36:17,133 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 11:36:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:17,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:36:17,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:17,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:36:17,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:17,445 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-16 11:36:17,446 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:17,539 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 816 states and 1157 transitions. Complement of second has 18 states. [2022-11-16 11:36:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2022-11-16 11:36:17,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-16 11:36:17,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:17,542 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 11:36:17,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:17,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:36:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:17,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:36:17,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:36:17,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:36:17,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:36:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:36:17,860 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 4 loop predicates [2022-11-16 11:36:17,861 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350 Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:17,976 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 789 states and 1129 transitions. cyclomatic complexity: 350. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Result 1046 states and 1479 transitions. Complement of second has 22 states. [2022-11-16 11:36:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-11-16 11:36:17,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 16 transitions. [2022-11-16 11:36:17,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 4 letters. [2022-11-16 11:36:17,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:17,980 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 60 letters. Loop has 4 letters. [2022-11-16 11:36:17,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:17,981 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 16 transitions. Stem has 56 letters. Loop has 8 letters. [2022-11-16 11:36:17,981 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 11:36:17,981 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1046 states and 1479 transitions. [2022-11-16 11:36:18,003 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 54 [2022-11-16 11:36:18,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1046 states to 967 states and 1395 transitions. [2022-11-16 11:36:18,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 306 [2022-11-16 11:36:18,016 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 334 [2022-11-16 11:36:18,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 967 states and 1395 transitions. [2022-11-16 11:36:18,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 11:36:18,021 INFO L218 hiAutomatonCegarLoop]: Abstraction has 967 states and 1395 transitions. [2022-11-16 11:36:18,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states and 1395 transitions. [2022-11-16 11:36:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 954. [2022-11-16 11:36:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 601 states have (on average 1.1231281198003327) internal successors, (675), 638 states have internal predecessors, (675), 223 states have call successors, (257), 125 states have call predecessors, (257), 130 states have return successors, (446), 190 states have call predecessors, (446), 211 states have call successors, (446) [2022-11-16 11:36:18,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1378 transitions. [2022-11-16 11:36:18,053 INFO L240 hiAutomatonCegarLoop]: Abstraction has 954 states and 1378 transitions. [2022-11-16 11:36:18,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:36:18,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:36:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:36:18,054 INFO L87 Difference]: Start difference. First operand 954 states and 1378 transitions. Second operand has 23 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 13 states have internal predecessors, (38), 11 states have call successors, (12), 12 states have call predecessors, (12), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:36:18,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:36:18,486 INFO L93 Difference]: Finished difference Result 554 states and 654 transitions. [2022-11-16 11:36:18,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 554 states and 654 transitions. [2022-11-16 11:36:18,492 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 11:36:18,492 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 554 states to 0 states and 0 transitions. [2022-11-16 11:36:18,492 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 11:36:18,492 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 11:36:18,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 11:36:18,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:36:18,492 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:36:18,492 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:36:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:36:18,493 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 11:36:18,494 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-16 11:36:18,494 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-16 11:36:18,494 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 11:36:18,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-16 11:36:18,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 11:36:18 BoogieIcfgContainer [2022-11-16 11:36:18,501 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 11:36:18,502 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:36:18,502 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:36:18,502 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:36:18,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:36:01" (3/4) ... [2022-11-16 11:36:18,506 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 11:36:18,506 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:36:18,506 INFO L158 Benchmark]: Toolchain (without parser) took 17269.96ms. Allocated memory was 109.1MB in the beginning and 172.0MB in the end (delta: 62.9MB). Free memory was 66.2MB in the beginning and 56.3MB in the end (delta: 9.9MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2022-11-16 11:36:18,507 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:36:18,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.67ms. Allocated memory is still 109.1MB. Free memory was 66.1MB in the beginning and 83.8MB in the end (delta: -17.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:36:18,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.12ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 82.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:36:18,508 INFO L158 Benchmark]: Boogie Preprocessor took 25.32ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 81.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:36:18,508 INFO L158 Benchmark]: RCFGBuilder took 331.57ms. Allocated memory is still 109.1MB. Free memory was 81.3MB in the beginning and 72.1MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:36:18,508 INFO L158 Benchmark]: BuchiAutomizer took 16577.83ms. Allocated memory was 109.1MB in the beginning and 172.0MB in the end (delta: 62.9MB). Free memory was 72.1MB in the beginning and 56.3MB in the end (delta: 15.8MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. [2022-11-16 11:36:18,509 INFO L158 Benchmark]: Witness Printer took 3.96ms. Allocated memory is still 172.0MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:36:18,510 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 109.1MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.67ms. Allocated memory is still 109.1MB. Free memory was 66.1MB in the beginning and 83.8MB in the end (delta: -17.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.12ms. Allocated memory is still 109.1MB. Free memory was 83.8MB in the beginning and 82.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.32ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 81.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 331.57ms. Allocated memory is still 109.1MB. Free memory was 81.3MB in the beginning and 72.1MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 16577.83ms. Allocated memory was 109.1MB in the beginning and 172.0MB in the end (delta: 62.9MB). Free memory was 72.1MB in the beginning and 56.3MB in the end (delta: 15.8MB). Peak memory consumption was 80.0MB. Max. memory is 16.1GB. * Witness Printer took 3.96ms. Allocated memory is still 172.0MB. Free memory is still 56.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One deterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 5 modules have a trivial ranking function, the largest among these consists of 24 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.5s and 7 iterations. TraceHistogramMax:13. Analysis of lassos took 9.4s. Construction of modules took 1.3s. Büchi inclusion checks took 5.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 254 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 639 mSDsluCounter, 606 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 525 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1471 IncrementalHoareTripleChecker+Invalid, 1996 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 525 mSolverCounterUnsat, 217 mSDtfsCounter, 1471 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI1 SILT4 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp81 dnf100 smp100 tf110 neg96 sie106 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 38ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 3.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-16 11:36:18,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-16 11:36:18,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-16 11:36:18,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-16 11:36:19,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 11:36:19,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_474dec8f-c9da-48cf-989e-81889bc886cc/bin/uautomizer-tPACEb0tL8/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