./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.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_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/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_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/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_80fc8fda-85cf-4638-8d0a-ef2da252c577/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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- 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 12:01:28,877 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:01:28,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:01:28,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:01:28,921 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:01:28,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:01:28,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:01:28,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:01:28,936 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:01:28,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:01:28,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:01:28,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:01:28,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:01:28,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:01:28,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:01:28,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:01:28,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:01:28,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:01:28,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:01:28,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:01:28,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:01:28,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:01:28,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:01:28,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:01:28,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:01:28,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:01:28,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:01:28,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:01:28,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:01:28,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:01:28,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:01:28,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:01:28,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:01:28,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:01:28,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:01:28,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:01:28,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:01:28,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:01:28,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:01:28,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:01:28,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:01:28,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-16 12:01:29,042 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:01:29,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:01:29,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:01:29,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:01:29,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:01:29,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:01:29,045 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:01:29,045 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 12:01:29,045 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 12:01:29,046 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 12:01:29,046 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 12:01:29,046 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 12:01:29,046 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 12:01:29,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:01:29,047 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:01:29,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:01:29,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:01:29,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:01:29,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:01:29,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 12:01:29,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 12:01:29,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 12:01:29,052 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:01:29,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:01:29,054 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 12:01:29,054 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:01:29,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 12:01:29,055 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:01:29,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:01:29,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:01:29,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:01:29,058 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 12:01:29,058 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_80fc8fda-85cf-4638-8d0a-ef2da252c577/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2022-11-16 12:01:29,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:01:29,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:01:29,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:01:29,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:01:29,477 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:01:29,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2022-11-16 12:01:29,559 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/data/0524ff820/13557f541bf44008a15fe86eb4c23038/FLAG180f46d12 [2022-11-16 12:01:30,186 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:01:30,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2022-11-16 12:01:30,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/data/0524ff820/13557f541bf44008a15fe86eb4c23038/FLAG180f46d12 [2022-11-16 12:01:30,522 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/data/0524ff820/13557f541bf44008a15fe86eb4c23038 [2022-11-16 12:01:30,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:01:30,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:01:30,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:01:30,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:01:30,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:01:30,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c57305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30, skipping insertion in model container [2022-11-16 12:01:30,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:01:30,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:01:30,793 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_80fc8fda-85cf-4638-8d0a-ef2da252c577/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2022-11-16 12:01:30,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:01:30,808 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:01:30,839 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_80fc8fda-85cf-4638-8d0a-ef2da252c577/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2022-11-16 12:01:30,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:01:30,864 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:01:30,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30 WrapperNode [2022-11-16 12:01:30,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:01:30,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:01:30,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:01:30,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:01:30,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,910 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-16 12:01:30,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:01:30,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:01:30,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:01:30,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:01:30,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,941 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:01:30,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:01:30,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:01:30,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:01:30,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (1/1) ... [2022-11-16 12:01:30,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:30,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:30,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:30,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 12:01:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:01:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:01:31,035 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-16 12:01:31,036 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-16 12:01:31,036 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-16 12:01:31,037 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-16 12:01:31,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:01:31,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:01:31,119 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:01:31,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:01:31,315 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:01:31,332 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:01:31,332 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:01:31,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:01:31 BoogieIcfgContainer [2022-11-16 12:01:31,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:01:31,341 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 12:01:31,342 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 12:01:31,347 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 12:01:31,348 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:01:31,348 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:01:30" (1/3) ... [2022-11-16 12:01:31,349 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ff18f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:01:31, skipping insertion in model container [2022-11-16 12:01:31,349 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:01:31,350 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:01:30" (2/3) ... [2022-11-16 12:01:31,350 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4ff18f99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:01:31, skipping insertion in model container [2022-11-16 12:01:31,350 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:01:31,350 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:01:31" (3/3) ... [2022-11-16 12:01:31,352 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2022-11-16 12:01:31,415 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 12:01:31,415 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 12:01:31,415 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 12:01:31,416 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 12:01:31,416 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 12:01:31,416 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 12:01:31,416 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 12:01:31,416 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 12:01:31,421 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:01:31,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-16 12:01:31,449 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:31,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:31,460 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:01:31,460 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:31,460 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 12:01:31,461 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:01:31,465 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-16 12:01:31,465 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:31,465 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:31,466 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-16 12:01:31,466 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:31,502 INFO L748 eck$LassoCheckResult]: Stem: 15#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(18, 2);call #Ultimate.allocInit(12, 3); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-11-16 12:01:31,503 INFO L750 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-11-16 12:01:31,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-11-16 12:01:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:31,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011441824] [2022-11-16 12:01:31,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:31,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:31,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:31,744 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-11-16 12:01:31,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:31,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063447224] [2022-11-16 12:01:31,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:31,775 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:31,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:31,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:31,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-11-16 12:01:31,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:31,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701101097] [2022-11-16 12:01:31,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:31,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:31,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:31,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:32,184 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:01:32,184 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:01:32,184 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:01:32,185 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:01:32,185 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:01:32,185 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,186 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:01:32,186 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:01:32,186 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2022-11-16 12:01:32,186 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:01:32,186 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:01:32,208 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 12:01:32,221 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 12:01:32,227 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 12:01:32,231 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 12:01:32,236 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 12:01:32,240 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 12:01:32,243 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 12:01:32,246 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 12:01:32,340 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:01:32,341 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:01:32,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,352 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-16 12:01:32,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:32,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,392 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:32,392 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:32,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-16 12:01:32,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,412 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-16 12:01:32,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:32,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,435 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:32,435 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:32,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-16 12:01:32,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:32,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,471 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:32,471 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:32,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,494 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:32,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-16 12:01:32,525 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:32,525 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:32,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:32,550 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-16 12:01:32,572 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:32,572 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:32,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,579 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-16 12:01:32,584 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:32,584 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,598 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:32,599 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:32,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,610 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-16 12:01:32,613 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:32,614 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,658 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:32,658 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:32,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,667 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-16 12:01:32,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:32,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,694 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-16 12:01:32,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:01:32,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:32,803 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:01:32,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:32,816 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:01:32,816 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:01:32,816 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:01:32,816 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:01:32,816 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:01:32,817 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,817 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:01:32,817 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:01:32,817 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2022-11-16 12:01:32,817 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:01:32,817 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:01:32,818 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 12:01:32,822 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 12:01:32,825 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 12:01:32,829 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 12:01:32,832 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 12:01:32,835 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 12:01:32,845 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 12:01:32,848 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 12:01:32,902 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:01:32,908 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:01:32,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:32,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:32,911 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:32,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-16 12:01:32,966 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 12:01:32,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:32,991 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:32,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:32,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:32,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:32,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:32,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:33,020 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:33,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-11-16 12:01:33,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:33,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:33,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:33,122 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 12:01:33,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-16 12:01:33,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:33,135 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:33,135 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:33,135 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:33,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:33,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:33,137 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:33,147 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:33,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:33,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:33,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:33,159 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:33,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-16 12:01:33,168 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 12:01:33,183 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:33,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:33,184 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:33,184 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:33,184 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:33,185 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:33,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:33,207 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:33,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:33,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:33,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:33,213 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:33,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-16 12:01:33,222 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 12:01:33,233 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:33,233 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:33,233 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:33,234 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:33,234 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:33,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:33,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:33,246 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:33,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-11-16 12:01:33,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:33,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:33,252 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:33,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-16 12:01:33,255 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 12:01:33,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:33,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:33,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:33,267 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:33,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:33,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:33,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:33,277 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:33,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:33,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:33,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:33,282 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:33,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-16 12:01:33,286 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 12:01:33,298 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:33,299 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:33,299 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:33,299 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:33,299 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:33,301 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:33,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:33,311 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:01:33,319 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:01:33,319 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 12:01:33,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:33,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:33,327 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:33,335 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:01:33,335 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:01:33,336 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:01:33,336 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-11-16 12:01:33,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-16 12:01:33,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:33,352 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:01:33,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:33,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:01:33,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:33,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:01:33,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:33,648 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 12:01:33,690 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-16 12:01:33,693 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:34,004 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-11-16 12:01:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-16 12:01:34,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:01:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-11-16 12:01:34,029 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-16 12:01:34,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:34,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-16 12:01:34,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:34,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-11-16 12:01:34,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:34,034 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-11-16 12:01:34,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-16 12:01:34,062 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-11-16 12:01:34,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-16 12:01:34,065 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-11-16 12:01:34,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-11-16 12:01:34,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:34,067 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-16 12:01:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-11-16 12:01:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-11-16 12:01:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-16 12:01:34,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-11-16 12:01:34,121 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-16 12:01:34,121 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-16 12:01:34,122 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-16 12:01:34,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-11-16 12:01:34,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-16 12:01:34,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:34,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:34,129 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:34,129 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:34,129 INFO L748 eck$LassoCheckResult]: Stem: 195#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(18, 2);call #Ultimate.allocInit(12, 3); 196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 213#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 212#fibo1ENTRY ~n := #in~n; 214#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 207#L15 call #t~ret4 := fibo2(~n - 1);< 229#fibo2ENTRY ~n := #in~n; 235#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 215#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 204#fibo1FINAL assume true; 205#fibo1EXIT >#46#return; 206#L25-1 [2022-11-16 12:01:34,130 INFO L750 eck$LassoCheckResult]: Loop: 206#L25-1 call #t~ret7 := fibo1(~n - 2);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume !(~n < 1); 240#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 219#fibo2ENTRY ~n := #in~n; 242#L20 assume !(~n < 1); 241#L22 assume !(1 == ~n); 218#L25 call #t~ret6 := fibo1(~n - 1);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume ~n < 1;#res := 0; 237#fibo1FINAL assume true; 238#fibo1EXIT >#46#return; 206#L25-1 [2022-11-16 12:01:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-11-16 12:01:34,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:34,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447640563] [2022-11-16 12:01:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:34,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:34,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:01:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:34,395 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 12:01:34,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:34,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447640563] [2022-11-16 12:01:34,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447640563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:34,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:34,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:01:34,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796539914] [2022-11-16 12:01:34,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:34,400 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:01:34,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:34,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-11-16 12:01:34,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:34,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805073957] [2022-11-16 12:01:34,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:34,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:34,534 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 12:01:34,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:34,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805073957] [2022-11-16 12:01:34,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805073957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:01:34,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:01:34,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:01:34,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252622260] [2022-11-16 12:01:34,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:01:34,536 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 12:01:34,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:34,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:01:34,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:01:34,541 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:01:34,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:34,672 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-11-16 12:01:34,672 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-11-16 12:01:34,675 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-16 12:01:34,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-11-16 12:01:34,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-11-16 12:01:34,678 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-16 12:01:34,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-11-16 12:01:34,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:34,679 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-11-16 12:01:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-11-16 12:01:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-16 12:01:34,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-16 12:01:34,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-11-16 12:01:34,701 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-16 12:01:34,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:01:34,702 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-16 12:01:34,702 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-16 12:01:34,703 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-11-16 12:01:34,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-16 12:01:34,706 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:34,706 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:34,707 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:34,708 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:34,708 INFO L748 eck$LassoCheckResult]: Stem: 340#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(18, 2);call #Ultimate.allocInit(12, 3); 341#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 359#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 358#fibo1ENTRY ~n := #in~n; 360#L10 assume !(~n < 1); 370#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 377#fibo2ENTRY ~n := #in~n; 381#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 361#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 386#L12 assume 1 == ~n;#res := 1; 385#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 350#L25-1 [2022-11-16 12:01:34,708 INFO L750 eck$LassoCheckResult]: Loop: 350#L25-1 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume !(1 == ~n); 356#L15 call #t~ret4 := fibo2(~n - 1);< 390#fibo2ENTRY ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 351#L25 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 350#L25-1 [2022-11-16 12:01:34,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:34,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-11-16 12:01:34,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:34,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800160440] [2022-11-16 12:01:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:34,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:01:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:34,920 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 12:01:34,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:34,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800160440] [2022-11-16 12:01:34,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800160440] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:34,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971618300] [2022-11-16 12:01:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:34,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:34,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:34,924 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:34,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:01:34,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:34,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:01:34,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:35,069 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 12:01:35,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:35,268 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 12:01:35,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971618300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:35,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:35,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-16 12:01:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262754833] [2022-11-16 12:01:35,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:35,269 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:01:35,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-11-16 12:01:35,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:35,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379513226] [2022-11-16 12:01:35,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:35,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:35,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:35,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:35,574 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:01:35,574 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:01:35,574 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:01:35,574 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:01:35,574 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:01:35,575 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:35,575 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:01:35,575 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:01:35,575 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2022-11-16 12:01:35,575 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:01:35,575 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:01:35,576 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 12:01:35,580 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 12:01:35,582 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 12:01:35,585 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 12:01:35,589 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 12:01:35,598 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 12:01:35,603 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 12:01:35,607 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 12:01:35,686 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:01:35,687 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:01:35,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:35,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:35,688 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:35,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:35,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:35,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-16 12:01:35,725 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:35,725 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:35,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:35,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:35,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:35,736 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:35,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-16 12:01:35,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:35,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:35,765 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:35,765 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:35,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:35,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:35,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:35,832 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:35,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-16 12:01:35,896 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:35,896 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:35,932 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:35,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:35,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:35,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:35,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:35,962 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:36,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:36,019 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:36,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-16 12:01:36,043 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:36,043 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:36,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:36,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:36,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:36,054 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:36,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:36,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:36,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-16 12:01:36,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:36,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:36,107 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:36,111 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:01:36,111 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:36,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-16 12:01:37,600 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:01:37,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-16 12:01:37,604 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:01:37,604 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:01:37,605 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:01:37,605 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:01:37,605 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:01:37,605 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:37,605 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:01:37,605 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:01:37,605 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2022-11-16 12:01:37,605 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:01:37,605 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:01:37,607 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 12:01:37,610 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 12:01:37,613 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 12:01:37,619 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 12:01:37,632 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 12:01:37,636 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 12:01:37,639 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 12:01:37,644 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 12:01:37,717 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:01:37,718 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:01:37,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:37,719 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:37,728 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 12:01:37,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-16 12:01:37,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:37,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:37,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:37,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:37,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:37,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:37,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:37,759 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:37,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:37,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:37,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:37,765 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:37,776 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 12:01:37,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-16 12:01:37,790 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:37,790 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:37,790 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:37,791 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:37,791 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:37,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:37,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:37,808 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:37,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:37,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:37,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:37,814 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:37,820 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 12:01:37,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-16 12:01:37,834 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:37,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:37,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:37,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:37,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:37,836 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:37,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:37,859 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:37,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:37,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:37,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:37,864 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:37,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-16 12:01:37,869 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 12:01:37,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:37,881 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:37,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:37,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:37,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:37,883 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:37,883 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:37,906 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:01:37,910 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:01:37,910 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 12:01:37,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:37,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:37,912 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:37,924 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:01:37,924 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:01:37,924 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:01:37,924 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-11-16 12:01:37,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-16 12:01:37,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:37,930 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:01:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:37,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:01:37,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:38,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:01:38,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:38,345 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 12:01:38,346 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-16 12:01:38,346 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:01:38,942 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-11-16 12:01:38,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-11-16 12:01:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:01:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-11-16 12:01:38,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-11-16 12:01:38,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:38,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-11-16 12:01:38,947 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:38,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-11-16 12:01:38,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:38,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-11-16 12:01:38,953 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-16 12:01:38,958 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-11-16 12:01:38,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-11-16 12:01:38,959 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-11-16 12:01:38,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-11-16 12:01:38,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:38,961 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-11-16 12:01:38,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-11-16 12:01:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-11-16 12:01:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-11-16 12:01:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-11-16 12:01:38,977 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-11-16 12:01:38,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:38,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:01:38,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:01:38,978 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:01:39,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:39,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:39,301 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2022-11-16 12:01:39,301 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2022-11-16 12:01:39,305 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-16 12:01:39,310 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2022-11-16 12:01:39,310 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2022-11-16 12:01:39,311 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2022-11-16 12:01:39,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2022-11-16 12:01:39,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:39,312 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2022-11-16 12:01:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2022-11-16 12:01:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2022-11-16 12:01:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (56), 34 states have call predecessors, (56), 37 states have call successors, (56) [2022-11-16 12:01:39,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2022-11-16 12:01:39,328 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-11-16 12:01:39,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:01:39,330 INFO L428 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-11-16 12:01:39,330 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-16 12:01:39,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2022-11-16 12:01:39,332 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-16 12:01:39,333 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:39,333 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:39,337 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-16 12:01:39,337 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 12:01:39,338 INFO L748 eck$LassoCheckResult]: Stem: 1215#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(18, 2);call #Ultimate.allocInit(12, 3); 1216#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1243#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1289#fibo1ENTRY ~n := #in~n; 1323#L10 assume !(~n < 1); 1322#L12 assume !(1 == ~n); 1221#L15 call #t~ret4 := fibo2(~n - 1);< 1275#fibo2ENTRY ~n := #in~n; 1282#L20 assume !(~n < 1); 1220#L22 assume !(1 == ~n); 1222#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1314#L10 assume !(~n < 1); 1313#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1312#fibo2ENTRY ~n := #in~n; 1309#L20 assume !(~n < 1); 1310#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1314#L10 assume !(~n < 1); 1313#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1312#fibo2ENTRY ~n := #in~n; 1309#L20 assume ~n < 1;#res := 0; 1269#fibo2FINAL assume true; 1270#fibo2EXIT >#50#return; 1246#L15-1 call #t~ret5 := fibo2(~n - 2);< 1249#fibo2ENTRY ~n := #in~n; 1379#L20 assume !(~n < 1); 1378#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1315#L10 assume !(~n < 1); 1318#L12 assume 1 == ~n;#res := 1; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1225#L25-1 call #t~ret7 := fibo1(~n - 2);< 1235#fibo1ENTRY ~n := #in~n; 1308#L10 assume !(~n < 1); 1306#L12 assume !(1 == ~n); 1233#L15 call #t~ret4 := fibo2(~n - 1);< 1305#fibo2ENTRY ~n := #in~n; 1303#L20 assume ~n < 1;#res := 0; 1304#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1234#L15-1 call #t~ret5 := fibo2(~n - 2);< 1305#fibo2ENTRY ~n := #in~n; 1303#L20 assume !(~n < 1); 1298#L22 assume 1 == ~n;#res := 1; 1299#fibo2FINAL assume true; 1366#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#46#return; 1260#L25-1 call #t~ret7 := fibo1(~n - 2);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1283#L15-1 [2022-11-16 12:01:39,338 INFO L750 eck$LassoCheckResult]: Loop: 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1373#L22 assume !(1 == ~n); 1259#L25 call #t~ret6 := fibo1(~n - 1);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1373#L22 assume !(1 == ~n); 1259#L25 call #t~ret6 := fibo1(~n - 1);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#46#return; 1260#L25-1 call #t~ret7 := fibo1(~n - 2);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1283#L15-1 [2022-11-16 12:01:39,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2022-11-16 12:01:39,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:39,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23734919] [2022-11-16 12:01:39,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:39,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:01:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 12:01:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-16 12:01:39,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:39,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23734919] [2022-11-16 12:01:39,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23734919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:39,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918217057] [2022-11-16 12:01:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:39,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:39,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:39,868 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:39,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-16 12:01:39,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:39,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:01:39,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:40,158 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-16 12:01:40,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-16 12:01:40,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918217057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:40,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:40,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 30 [2022-11-16 12:01:40,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214858274] [2022-11-16 12:01:40,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:40,855 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:01:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2022-11-16 12:01:40,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:40,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854064309] [2022-11-16 12:01:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:40,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:40,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:40,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:40,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-16 12:01:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:41,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,057 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-16 12:01:41,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:41,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854064309] [2022-11-16 12:01:41,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854064309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:41,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436309698] [2022-11-16 12:01:41,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:41,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:41,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:41,060 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:41,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-16 12:01:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:41,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:01:41,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 12:01:41,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 12:01:41,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436309698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:41,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:41,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2022-11-16 12:01:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752617105] [2022-11-16 12:01:41,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:41,609 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 12:01:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:01:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:01:41,610 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. cyclomatic complexity: 64 Second operand has 15 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-16 12:01:41,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:41,922 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2022-11-16 12:01:41,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2022-11-16 12:01:41,925 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-16 12:01:41,930 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2022-11-16 12:01:41,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2022-11-16 12:01:41,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2022-11-16 12:01:41,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2022-11-16 12:01:41,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:41,931 INFO L218 hiAutomatonCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-11-16 12:01:41,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2022-11-16 12:01:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2022-11-16 12:01:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 128 states have internal predecessors, (139), 40 states have call successors, (41), 25 states have call predecessors, (41), 31 states have return successors, (64), 35 states have call predecessors, (64), 37 states have call successors, (64) [2022-11-16 12:01:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2022-11-16 12:01:41,946 INFO L240 hiAutomatonCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-11-16 12:01:41,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:01:41,947 INFO L428 stractBuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-11-16 12:01:41,947 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-16 12:01:41,948 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2022-11-16 12:01:41,949 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-16 12:01:41,950 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:41,950 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:41,952 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:41,952 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 12:01:41,952 INFO L748 eck$LassoCheckResult]: Stem: 2732#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2733#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2762#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2794#fibo1ENTRY ~n := #in~n; 2783#L10 assume !(~n < 1); 2778#L12 assume !(1 == ~n); 2738#L15 call #t~ret4 := fibo2(~n - 1);< 2786#fibo2ENTRY ~n := #in~n; 2788#L20 assume !(~n < 1); 2737#L22 assume !(1 == ~n); 2739#L25 call #t~ret6 := fibo1(~n - 1);< 2807#fibo1ENTRY ~n := #in~n; 2805#L10 assume !(~n < 1); 2804#L12 assume !(1 == ~n); 2750#L15 call #t~ret4 := fibo2(~n - 1);< 2799#fibo2ENTRY ~n := #in~n; 2825#L20 assume !(~n < 1); 2824#L22 assume !(1 == ~n); 2769#L25 call #t~ret6 := fibo1(~n - 1);< 2807#fibo1ENTRY ~n := #in~n; 2808#L10 assume !(~n < 1); 2835#L12 assume 1 == ~n;#res := 1; 2836#fibo1FINAL assume true; 2905#fibo1EXIT >#46#return; 2748#L25-1 call #t~ret7 := fibo1(~n - 2);< 2751#fibo1ENTRY ~n := #in~n; 2911#L10 assume ~n < 1;#res := 0; 2909#fibo1FINAL assume true; 2907#fibo1EXIT >#48#return; 2771#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2772#fibo2FINAL assume true; 2779#fibo2EXIT >#50#return; 2849#L15-1 [2022-11-16 12:01:41,952 INFO L750 eck$LassoCheckResult]: Loop: 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume !(1 == ~n); 2857#L25 call #t~ret6 := fibo1(~n - 1);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume !(1 == ~n); 2857#L25 call #t~ret6 := fibo1(~n - 1);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume 1 == ~n;#res := 1; 2885#fibo2FINAL assume true; 2860#fibo2EXIT >#50#return; 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume ~n < 1;#res := 0; 2887#fibo2FINAL assume true; 2883#fibo2EXIT >#52#return; 2848#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2882#fibo1FINAL assume true; 2879#fibo1EXIT >#46#return; 2854#L25-1 call #t~ret7 := fibo1(~n - 2);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume 1 == ~n;#res := 1; 2885#fibo2FINAL assume true; 2860#fibo2EXIT >#50#return; 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume ~n < 1;#res := 0; 2887#fibo2FINAL assume true; 2883#fibo2EXIT >#52#return; 2848#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2882#fibo1FINAL assume true; 2879#fibo1EXIT >#48#return; 2876#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2875#fibo2FINAL assume true; 2850#fibo2EXIT >#50#return; 2849#L15-1 [2022-11-16 12:01:41,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-11-16 12:01:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:41,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900181846] [2022-11-16 12:01:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:41,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:41,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:41,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:41,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2022-11-16 12:01:41,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:41,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161072605] [2022-11-16 12:01:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:41,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:01:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,211 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-16 12:01:42,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:42,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161072605] [2022-11-16 12:01:42,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161072605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:42,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270666981] [2022-11-16 12:01:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:42,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:42,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:42,216 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:42,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-16 12:01:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:42,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:01:42,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 12:01:42,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:42,932 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 12:01:42,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270666981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:42,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:42,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-16 12:01:42,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887677534] [2022-11-16 12:01:42,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:42,934 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 12:01:42,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:42,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:01:42,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:01:42,936 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. cyclomatic complexity: 60 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-16 12:01:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:43,337 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2022-11-16 12:01:43,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2022-11-16 12:01:43,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-16 12:01:43,341 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2022-11-16 12:01:43,341 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-11-16 12:01:43,342 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2022-11-16 12:01:43,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2022-11-16 12:01:43,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:43,342 INFO L218 hiAutomatonCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-11-16 12:01:43,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2022-11-16 12:01:43,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-11-16 12:01:43,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 69 states have internal predecessors, (75), 20 states have call successors, (20), 15 states have call predecessors, (20), 16 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-16 12:01:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2022-11-16 12:01:43,353 INFO L240 hiAutomatonCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-11-16 12:01:43,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:01:43,358 INFO L428 stractBuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-11-16 12:01:43,359 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-16 12:01:43,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2022-11-16 12:01:43,360 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-16 12:01:43,360 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:43,360 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:43,361 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:43,361 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:43,362 INFO L748 eck$LassoCheckResult]: Stem: 3486#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(18, 2);call #Ultimate.allocInit(12, 3); 3487#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3509#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3536#fibo1ENTRY ~n := #in~n; 3524#L10 assume !(~n < 1); 3525#L12 assume !(1 == ~n); 3510#L15 call #t~ret4 := fibo2(~n - 1);< 3570#fibo2ENTRY ~n := #in~n; 3531#L20 assume !(~n < 1); 3532#L22 assume !(1 == ~n); 3495#L25 call #t~ret6 := fibo1(~n - 1);< 3505#fibo1ENTRY ~n := #in~n; 3506#L10 assume !(~n < 1); 3519#L12 assume !(1 == ~n); 3492#L15 call #t~ret4 := fibo2(~n - 1);< 3527#fibo2ENTRY ~n := #in~n; 3535#L20 assume !(~n < 1); 3491#L22 assume !(1 == ~n); 3493#L25 call #t~ret6 := fibo1(~n - 1);< 3505#fibo1ENTRY ~n := #in~n; 3507#L10 assume !(~n < 1); 3539#L12 assume 1 == ~n;#res := 1; 3494#fibo1FINAL assume true; 3496#fibo1EXIT >#46#return; 3508#L25-1 call #t~ret7 := fibo1(~n - 2);< 3579#fibo1ENTRY ~n := #in~n; 3584#L10 assume ~n < 1;#res := 0; 3581#fibo1FINAL assume true; 3577#fibo1EXIT >#48#return; 3574#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3573#fibo2FINAL assume true; 3571#fibo2EXIT >#50#return; 3514#L15-1 [2022-11-16 12:01:43,362 INFO L750 eck$LassoCheckResult]: Loop: 3514#L15-1 call #t~ret5 := fibo2(~n - 2);< 3545#fibo2ENTRY ~n := #in~n; 3568#L20 assume !(~n < 1); 3540#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3499#fibo1ENTRY ~n := #in~n; 3504#L10 assume !(~n < 1); 3542#L12 assume !(1 == ~n); 3513#L15 call #t~ret4 := fibo2(~n - 1);< 3526#fibo2ENTRY ~n := #in~n; 3534#L20 assume !(~n < 1); 3540#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3499#fibo1ENTRY ~n := #in~n; 3504#L10 assume !(~n < 1); 3542#L12 assume 1 == ~n;#res := 1; 3518#fibo1FINAL assume true; 3586#fibo1EXIT >#46#return; 3522#L25-1 call #t~ret7 := fibo1(~n - 2);< 3548#fibo1ENTRY ~n := #in~n; 3521#L10 assume ~n < 1;#res := 0; 3523#fibo1FINAL assume true; 3580#fibo1EXIT >#48#return; 3512#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3515#fibo2FINAL assume true; 3520#fibo2EXIT >#50#return; 3514#L15-1 [2022-11-16 12:01:43,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:43,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2022-11-16 12:01:43,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:43,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522557984] [2022-11-16 12:01:43,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:43,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:43,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:43,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:43,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:43,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2022-11-16 12:01:43,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:43,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268748358] [2022-11-16 12:01:43,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:43,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:43,419 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:43,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:43,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2022-11-16 12:01:43,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:43,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147437606] [2022-11-16 12:01:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:43,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:01:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-16 12:01:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:01:43,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:43,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147437606] [2022-11-16 12:01:43,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147437606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:43,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571928143] [2022-11-16 12:01:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:43,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:43,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:43,663 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:43,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-16 12:01:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:43,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:01:43,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:43,817 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:01:43,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 12:01:43,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571928143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:43,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:43,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2022-11-16 12:01:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292146613] [2022-11-16 12:01:43,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:44,429 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:01:44,429 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:01:44,429 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:01:44,429 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:01:44,429 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:01:44,429 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:44,429 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:01:44,430 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:01:44,430 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2022-11-16 12:01:44,430 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:01:44,430 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:01:44,431 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 12:01:44,434 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 12:01:44,446 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 12:01:44,449 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 12:01:44,452 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 12:01:44,455 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 12:01:44,457 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 12:01:44,461 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 12:01:44,544 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:01:44,544 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:01:44,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:44,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:44,551 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:44,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:44,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:44,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-16 12:01:44,584 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:44,584 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:44,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:44,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:44,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:44,595 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:44,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:44,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:44,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-16 12:01:44,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:44,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:44,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:44,633 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:44,641 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:01:44,641 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:44,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-16 12:01:45,111 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:01:45,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-11-16 12:01:45,114 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:01:45,115 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:01:45,115 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:01:45,115 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:01:45,115 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:01:45,115 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:45,115 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:01:45,115 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:01:45,115 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2022-11-16 12:01:45,115 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:01:45,115 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:01:45,116 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 12:01:45,122 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 12:01:45,136 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 12:01:45,140 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 12:01:45,143 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 12:01:45,146 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 12:01:45,150 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 12:01:45,153 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 12:01:45,249 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:01:45,249 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:01:45,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:45,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:45,256 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:45,263 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 12:01:45,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-16 12:01:45,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:45,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:45,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:45,277 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:45,277 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:45,278 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:45,278 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:45,295 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:45,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:45,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:45,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:45,306 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:45,312 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 12:01:45,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-16 12:01:45,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:45,326 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:45,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:45,326 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:45,326 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:45,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:45,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:45,337 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:01:45,342 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-16 12:01:45,342 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-16 12:01:45,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:45,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:45,347 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:45,352 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:01:45,352 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:01:45,352 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:01:45,352 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-11-16 12:01:45,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-16 12:01:45,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:45,358 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:01:45,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:45,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:01:45,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:45,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:45,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-16 12:01:45,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:46,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:01:46,035 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2022-11-16 12:01:46,035 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 12:01:46,591 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 335 states and 442 transitions. Complement of second has 46 states. [2022-11-16 12:01:46,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2022-11-16 12:01:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 12:01:46,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2022-11-16 12:01:46,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2022-11-16 12:01:46,595 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:46,595 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2022-11-16 12:01:46,596 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:46,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2022-11-16 12:01:46,598 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:46,598 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2022-11-16 12:01:46,603 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2022-11-16 12:01:46,608 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2022-11-16 12:01:46,608 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2022-11-16 12:01:46,609 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2022-11-16 12:01:46,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2022-11-16 12:01:46,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:46,609 INFO L218 hiAutomatonCegarLoop]: Abstraction has 292 states and 395 transitions. [2022-11-16 12:01:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2022-11-16 12:01:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2022-11-16 12:01:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 166 states have (on average 1.1506024096385543) internal successors, (191), 173 states have internal predecessors, (191), 55 states have call successors, (56), 36 states have call predecessors, (56), 45 states have return successors, (110), 56 states have call predecessors, (110), 52 states have call successors, (110) [2022-11-16 12:01:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2022-11-16 12:01:46,645 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 357 transitions. [2022-11-16 12:01:46,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:01:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:01:46,647 INFO L87 Difference]: Start difference. First operand 266 states and 357 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:01:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:46,882 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2022-11-16 12:01:46,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2022-11-16 12:01:46,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-16 12:01:46,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2022-11-16 12:01:46,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-11-16 12:01:46,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-11-16 12:01:46,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2022-11-16 12:01:46,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:46,886 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-11-16 12:01:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2022-11-16 12:01:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2022-11-16 12:01:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 80 states have internal predecessors, (86), 21 states have call successors, (21), 16 states have call predecessors, (21), 20 states have return successors, (34), 21 states have call predecessors, (34), 18 states have call successors, (34) [2022-11-16 12:01:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2022-11-16 12:01:46,898 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-11-16 12:01:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:01:46,900 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-11-16 12:01:46,901 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-16 12:01:46,901 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2022-11-16 12:01:46,903 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-16 12:01:46,903 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:46,903 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:46,907 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:46,908 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:46,909 INFO L748 eck$LassoCheckResult]: Stem: 5001#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(18, 2);call #Ultimate.allocInit(12, 3); 5002#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5029#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5053#fibo1ENTRY ~n := #in~n; 5054#L10 assume !(~n < 1); 5066#L12 assume !(1 == ~n); 5007#L15 call #t~ret4 := fibo2(~n - 1);< 5050#fibo2ENTRY ~n := #in~n; 5045#L20 assume !(~n < 1); 5006#L22 assume !(1 == ~n); 5008#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5025#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5018#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5099#L20 assume !(~n < 1); 5097#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5025#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5018#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5099#L20 assume !(~n < 1); 5097#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5026#L10 assume !(~n < 1); 5058#L12 assume 1 == ~n;#res := 1; 5064#fibo1FINAL assume true; 5113#fibo1EXIT >#46#return; 5017#L25-1 call #t~ret7 := fibo1(~n - 2);< 5019#fibo1ENTRY ~n := #in~n; 5115#L10 assume ~n < 1;#res := 0; 5114#fibo1FINAL assume true; 5027#fibo1EXIT >#48#return; 5028#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5033#fibo2FINAL assume true; 5046#fibo2EXIT >#50#return; 5004#L15-1 call #t~ret5 := fibo2(~n - 2);< 5032#fibo2ENTRY ~n := #in~n; 5044#L20 assume ~n < 1;#res := 0; 5005#fibo2FINAL assume true; 5037#fibo2EXIT >#52#return; 5076#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5074#fibo1FINAL assume true; 5071#fibo1EXIT >#46#return; 5010#L25-1 [2022-11-16 12:01:46,913 INFO L750 eck$LassoCheckResult]: Loop: 5010#L25-1 call #t~ret7 := fibo1(~n - 2);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5056#L15 call #t~ret4 := fibo2(~n - 1);< 5062#fibo2ENTRY ~n := #in~n; 5059#L20 assume !(~n < 1); 5060#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5056#L15 call #t~ret4 := fibo2(~n - 1);< 5062#fibo2ENTRY ~n := #in~n; 5059#L20 assume !(~n < 1); 5060#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume 1 == ~n;#res := 1; 5009#fibo1FINAL assume true; 5016#fibo1EXIT >#46#return; 5039#L25-1 call #t~ret7 := fibo1(~n - 2);< 5116#fibo1ENTRY ~n := #in~n; 5038#L10 assume ~n < 1;#res := 0; 5040#fibo1FINAL assume true; 5095#fibo1EXIT >#48#return; 5094#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5092#fibo2FINAL assume true; 5089#fibo2EXIT >#50#return; 5082#L15-1 call #t~ret5 := fibo2(~n - 2);< 5087#fibo2ENTRY ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5091#fibo2FINAL assume true; 5080#fibo2EXIT >#52#return; 5083#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5079#fibo1FINAL assume true; 5072#fibo1EXIT >#46#return; 5010#L25-1 [2022-11-16 12:01:46,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:46,913 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2022-11-16 12:01:46,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:46,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647941134] [2022-11-16 12:01:46,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:46,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:01:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:01:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-16 12:01:47,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:47,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647941134] [2022-11-16 12:01:47,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647941134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:47,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732135792] [2022-11-16 12:01:47,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:47,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:47,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:47,223 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:47,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-16 12:01:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:01:47,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:01:47,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:47,729 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:01:47,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732135792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:47,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:47,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-11-16 12:01:47,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167022177] [2022-11-16 12:01:47,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:47,730 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:01:47,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2022-11-16 12:01:47,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:47,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044828481] [2022-11-16 12:01:47,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:47,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:47,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:01:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 12:01:47,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044828481] [2022-11-16 12:01:47,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044828481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:47,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923019312] [2022-11-16 12:01:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:47,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:47,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:47,876 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:47,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-16 12:01:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:47,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:01:47,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:01:48,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 12:01:48,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923019312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:48,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:48,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-11-16 12:01:48,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238721462] [2022-11-16 12:01:48,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:48,359 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 12:01:48,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:48,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:01:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:01:48,361 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. cyclomatic complexity: 25 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 12:01:48,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:48,571 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2022-11-16 12:01:48,572 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2022-11-16 12:01:48,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-16 12:01:48,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2022-11-16 12:01:48,575 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-11-16 12:01:48,575 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-11-16 12:01:48,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2022-11-16 12:01:48,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:48,576 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2022-11-16 12:01:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2022-11-16 12:01:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-11-16 12:01:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 81 states have internal predecessors, (87), 21 states have call successors, (21), 17 states have call predecessors, (21), 20 states have return successors, (33), 21 states have call predecessors, (33), 18 states have call successors, (33) [2022-11-16 12:01:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2022-11-16 12:01:48,580 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-11-16 12:01:48,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:01:48,582 INFO L428 stractBuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-11-16 12:01:48,582 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-16 12:01:48,582 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2022-11-16 12:01:48,584 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-16 12:01:48,584 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:48,584 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:48,586 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:48,586 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-16 12:01:48,586 INFO L748 eck$LassoCheckResult]: Stem: 5911#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(18, 2);call #Ultimate.allocInit(12, 3); 5912#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5933#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5956#fibo1ENTRY ~n := #in~n; 5948#L10 assume !(~n < 1); 5942#L12 assume !(1 == ~n); 5917#L15 call #t~ret4 := fibo2(~n - 1);< 5955#fibo2ENTRY ~n := #in~n; 5953#L20 assume !(~n < 1); 5916#L22 assume !(1 == ~n); 5918#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5929#L10 assume !(~n < 1); 5973#L12 assume !(1 == ~n); 5936#L15 call #t~ret4 := fibo2(~n - 1);< 5951#fibo2ENTRY ~n := #in~n; 5989#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5929#L10 assume !(~n < 1); 5973#L12 assume !(1 == ~n); 5936#L15 call #t~ret4 := fibo2(~n - 1);< 5951#fibo2ENTRY ~n := #in~n; 5989#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5930#L10 assume !(~n < 1); 5965#L12 assume 1 == ~n;#res := 1; 5969#fibo1FINAL assume true; 5931#fibo1EXIT >#46#return; 5932#L25-1 call #t~ret7 := fibo1(~n - 2);< 6019#fibo1ENTRY ~n := #in~n; 6024#L10 assume ~n < 1;#res := 0; 6022#fibo1FINAL assume true; 6018#fibo1EXIT >#48#return; 6016#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6015#fibo2FINAL assume true; 6014#fibo2EXIT >#50#return; 5914#L15-1 call #t~ret5 := fibo2(~n - 2);< 5940#fibo2ENTRY ~n := #in~n; 5952#L20 assume !(~n < 1); 5913#L22 assume 1 == ~n;#res := 1; 5915#fibo2FINAL assume true; 6025#fibo2EXIT >#52#return; 5957#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5958#fibo1FINAL assume true; 5977#fibo1EXIT >#46#return; 5961#L25-1 [2022-11-16 12:01:48,587 INFO L750 eck$LassoCheckResult]: Loop: 5961#L25-1 call #t~ret7 := fibo1(~n - 2);< 5921#fibo1ENTRY ~n := #in~n; 6028#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5935#fibo1ENTRY ~n := #in~n; 5971#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5935#fibo1ENTRY ~n := #in~n; 5971#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume 1 == ~n;#res := 1; 5943#fibo2FINAL assume true; 5944#fibo2EXIT >#50#return; 5954#L15-1 call #t~ret5 := fibo2(~n - 2);< 5992#fibo2ENTRY ~n := #in~n; 5997#L20 assume ~n < 1;#res := 0; 5995#fibo2FINAL assume true; 5991#fibo2EXIT >#52#return; 5990#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5979#fibo1FINAL assume true; 5975#fibo1EXIT >#46#return; 5976#L25-1 call #t~ret7 := fibo1(~n - 2);< 6027#fibo1ENTRY ~n := #in~n; 6029#L10 assume ~n < 1;#res := 0; 5947#fibo1FINAL assume true; 6003#fibo1EXIT >#48#return; 6001#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6000#fibo2FINAL assume true; 5986#fibo2EXIT >#50#return; 5983#L15-1 call #t~ret5 := fibo2(~n - 2);< 5984#fibo2ENTRY ~n := #in~n; 5996#L20 assume !(~n < 1); 5994#L22 assume 1 == ~n;#res := 1; 5993#fibo2FINAL assume true; 5982#fibo2EXIT >#52#return; 5981#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5980#fibo1FINAL assume true; 5978#fibo1EXIT >#46#return; 5961#L25-1 [2022-11-16 12:01:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2022-11-16 12:01:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:48,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680968398] [2022-11-16 12:01:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:48,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:48,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 12:01:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:01:48,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,812 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:01:48,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:48,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680968398] [2022-11-16 12:01:48,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680968398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:48,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729699291] [2022-11-16 12:01:48,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:48,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:48,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:48,819 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:48,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-16 12:01:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:48,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 12:01:48,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:01:49,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:01:49,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729699291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:49,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:49,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-11-16 12:01:49,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697471251] [2022-11-16 12:01:49,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:49,344 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-16 12:01:49,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2022-11-16 12:01:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:49,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234587917] [2022-11-16 12:01:49,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:49,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 12:01:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:01:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 12:01:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-16 12:01:49,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:49,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234587917] [2022-11-16 12:01:49,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234587917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:49,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251822960] [2022-11-16 12:01:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:49,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:49,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:49,547 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:49,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-16 12:01:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:49,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:01:49,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 12:01:49,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:50,096 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-16 12:01:50,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251822960] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:50,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:50,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-11-16 12:01:50,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8533743] [2022-11-16 12:01:50,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:50,097 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-16 12:01:50,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:50,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 12:01:50,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:01:50,098 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. cyclomatic complexity: 23 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-16 12:01:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:50,565 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-11-16 12:01:50,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2022-11-16 12:01:50,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-16 12:01:50,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2022-11-16 12:01:50,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-11-16 12:01:50,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-11-16 12:01:50,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2022-11-16 12:01:50,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-16 12:01:50,573 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-16 12:01:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2022-11-16 12:01:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-16 12:01:50,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 16 states have call successors, (16), 13 states have call predecessors, (16), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-16 12:01:50,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-11-16 12:01:50,577 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-16 12:01:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:01:50,578 INFO L428 stractBuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-16 12:01:50,579 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-16 12:01:50,579 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2022-11-16 12:01:50,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-16 12:01:50,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:01:50,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:01:50,581 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:50,582 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:01:50,582 INFO L748 eck$LassoCheckResult]: Stem: 6951#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(18, 2);call #Ultimate.allocInit(12, 3); 6952#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 6972#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6996#fibo1ENTRY ~n := #in~n; 6985#L10 assume !(~n < 1); 6982#L12 assume !(1 == ~n); 6957#L15 call #t~ret4 := fibo2(~n - 1);< 6988#fibo2ENTRY ~n := #in~n; 6992#L20 assume !(~n < 1); 6956#L22 assume !(1 == ~n); 6958#L25 call #t~ret6 := fibo1(~n - 1);< 6967#fibo1ENTRY ~n := #in~n; 6969#L10 assume !(~n < 1); 7017#L12 assume !(1 == ~n); 6975#L15 call #t~ret4 := fibo2(~n - 1);< 7015#fibo2ENTRY ~n := #in~n; 7011#L20 assume !(~n < 1); 7009#L22 assume !(1 == ~n); 6968#L25 call #t~ret6 := fibo1(~n - 1);< 6967#fibo1ENTRY ~n := #in~n; 6970#L10 assume !(~n < 1); 6980#L12 assume 1 == ~n;#res := 1; 6981#fibo1FINAL assume true; 7025#fibo1EXIT >#46#return; 7022#L25-1 call #t~ret7 := fibo1(~n - 2);< 7023#fibo1ENTRY ~n := #in~n; 7028#L10 assume ~n < 1;#res := 0; 7027#fibo1FINAL assume true; 7021#fibo1EXIT >#48#return; 7019#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7018#fibo2FINAL assume true; 7016#fibo2EXIT >#50#return; 7013#L15-1 call #t~ret5 := fibo2(~n - 2);< 7014#fibo2ENTRY ~n := #in~n; 7026#L20 assume !(~n < 1); 7024#L22 assume 1 == ~n;#res := 1; 7020#fibo2FINAL assume true; 7012#fibo2EXIT >#52#return; 7010#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7008#fibo1FINAL assume true; 7006#fibo1EXIT >#46#return; 6960#L25-1 call #t~ret7 := fibo1(~n - 2);< 7002#fibo1ENTRY ~n := #in~n; 7039#L10 assume !(~n < 1); 6997#L12 [2022-11-16 12:01:50,582 INFO L750 eck$LassoCheckResult]: Loop: 6997#L12 assume !(1 == ~n); 6964#L15 call #t~ret4 := fibo2(~n - 1);< 6987#fibo2ENTRY ~n := #in~n; 7004#L20 assume !(~n < 1); 7000#L22 assume !(1 == ~n); 6973#L25 call #t~ret6 := fibo1(~n - 1);< 6974#fibo1ENTRY ~n := #in~n; 6999#L10 assume !(~n < 1); 6997#L12 [2022-11-16 12:01:50,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2022-11-16 12:01:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:50,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993453299] [2022-11-16 12:01:50,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:50,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:50,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:50,593 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:50,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:50,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:50,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:50,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2022-11-16 12:01:50,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:50,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799465583] [2022-11-16 12:01:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:50,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:50,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:01:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:01:50,615 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:01:50,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:50,616 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2022-11-16 12:01:50,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:01:50,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351176741] [2022-11-16 12:01:50,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:01:50,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:01:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:50,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:01:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:50,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:50,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-16 12:01:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:50,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:01:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-16 12:01:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:01:50,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:01:50,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351176741] [2022-11-16 12:01:50,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351176741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:01:50,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626121767] [2022-11-16 12:01:50,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:01:50,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:01:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:50,787 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:01:50,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-16 12:01:50,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 12:01:50,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:01:50,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:01:50,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:01:50,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:01:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:01:51,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626121767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:01:51,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:01:51,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2022-11-16 12:01:51,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058922629] [2022-11-16 12:01:51,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:01:51,260 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:01:51,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:01:51,261 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:01:51,261 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:01:51,261 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-16 12:01:51,261 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:51,261 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:01:51,261 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:01:51,261 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2022-11-16 12:01:51,261 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:01:51,261 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:01:51,262 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 12:01:51,266 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 12:01:51,268 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 12:01:51,271 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 12:01:51,275 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 12:01:51,285 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 12:01:51,287 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 12:01:51,290 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 12:01:51,352 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:01:51,352 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-16 12:01:51,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:51,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:51,359 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:51,364 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:51,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:51,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-16 12:01:51,398 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:51,398 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:51,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:51,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:51,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:51,410 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:51,415 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:51,415 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:51,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-16 12:01:51,452 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:51,452 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:51,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:51,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:51,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:51,457 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:51,460 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:51,461 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:51,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-16 12:01:51,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:51,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:51,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:51,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:51,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:51,502 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:51,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:51,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:51,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-16 12:01:51,531 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-16 12:01:51,531 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-16 12:01:51,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:51,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:51,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:51,536 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:51,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-16 12:01:51,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:51,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-16 12:01:51,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:51,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:51,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:51,592 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:51,596 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-16 12:01:51,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-16 12:01:51,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-16 12:01:52,610 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-16 12:01:52,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:52,615 INFO L210 LassoAnalysis]: Preferences: [2022-11-16 12:01:52,615 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-16 12:01:52,615 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-16 12:01:52,615 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-16 12:01:52,615 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-16 12:01:52,616 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:52,616 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-16 12:01:52,616 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-16 12:01:52,616 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2022-11-16 12:01:52,616 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-16 12:01:52,616 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-16 12:01:52,617 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 12:01:52,620 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 12:01:52,623 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 12:01:52,625 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 12:01:52,628 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 12:01:52,640 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 12:01:52,643 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 12:01:52,646 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 12:01:52,711 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-16 12:01:52,712 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-16 12:01:52,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:52,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:52,713 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:52,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-16 12:01:52,716 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 12:01:52,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:52,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:52,729 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:52,729 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:52,729 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:52,730 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:52,730 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:52,731 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:52,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:52,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:52,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:52,737 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:52,744 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 12:01:52,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-16 12:01:52,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:52,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:52,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:52,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:52,759 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:52,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:52,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:52,761 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:52,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2022-11-16 12:01:52,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:52,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:52,765 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:52,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-16 12:01:52,769 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 12:01:52,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:52,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:52,781 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:52,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:52,781 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:52,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:52,781 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:52,783 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:52,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2022-11-16 12:01:52,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:52,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:52,786 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:52,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-16 12:01:52,789 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 12:01:52,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:52,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:52,800 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:52,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:52,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:52,801 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:52,801 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:52,803 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-16 12:01:52,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2022-11-16 12:01:52,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:52,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:52,806 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:52,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-16 12:01:52,809 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 12:01:52,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-16 12:01:52,820 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-16 12:01:52,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-16 12:01:52,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-16 12:01:52,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-16 12:01:52,822 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-16 12:01:52,822 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-16 12:01:52,825 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-16 12:01:52,828 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-16 12:01:52,829 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-16 12:01:52,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:01:52,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:01:52,834 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:01:52,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-16 12:01:52,835 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-16 12:01:52,835 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-16 12:01:52,835 INFO L513 LassoAnalysis]: Proved termination. [2022-11-16 12:01:52,835 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-11-16 12:01:52,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:52,838 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-16 12:01:52,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:52,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:52,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:01:52,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:53,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:01:53,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:53,386 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 12:01:53,387 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-16 12:01:53,387 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:01:53,504 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2022-11-16 12:01:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-16 12:01:53,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:01:53,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-11-16 12:01:53,506 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-16 12:01:53,507 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:53,507 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:01:53,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:53,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:01:53,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:54,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:01:54,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:54,076 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 12:01:54,077 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-16 12:01:54,077 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:01:54,166 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2022-11-16 12:01:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-16 12:01:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:01:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-11-16 12:01:54,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-16 12:01:54,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:54,170 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-16 12:01:54,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:01:54,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:54,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:01:54,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:01:54,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:01:54,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:01:54,625 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 12:01:54,625 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 5 loop predicates [2022-11-16 12:01:54,626 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:01:54,783 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 135 states and 146 transitions. Complement of second has 23 states. [2022-11-16 12:01:54,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-16 12:01:54,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:01:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2022-11-16 12:01:54,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-16 12:01:54,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:54,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2022-11-16 12:01:54,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:54,786 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2022-11-16 12:01:54,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-16 12:01:54,787 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2022-11-16 12:01:54,788 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:01:54,788 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2022-11-16 12:01:54,788 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 12:01:54,788 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 12:01:54,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 12:01:54,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:54,789 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:01:54,789 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:01:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:01:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:01:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:01:54,789 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:01:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:01:54,790 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-16 12:01:54,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-16 12:01:54,790 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:01:54,790 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 12:01:54,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-16 12:01:54,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-16 12:01:54,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-16 12:01:54,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:01:54,790 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:01:54,790 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:01:54,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:01:54,791 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 12:01:54,791 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-16 12:01:54,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-16 12:01:54,791 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-16 12:01:54,791 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-16 12:01:54,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:01:54 BoogieIcfgContainer [2022-11-16 12:01:54,799 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 12:01:54,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:01:54,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:01:54,800 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:01:54,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:01:31" (3/4) ... [2022-11-16 12:01:54,804 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 12:01:54,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:01:54,804 INFO L158 Benchmark]: Toolchain (without parser) took 24272.56ms. Allocated memory was 107.0MB in the beginning and 192.9MB in the end (delta: 86.0MB). Free memory was 70.4MB in the beginning and 150.0MB in the end (delta: -79.6MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2022-11-16 12:01:54,805 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory was 86.5MB in the beginning and 86.4MB in the end (delta: 88.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:01:54,805 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.53ms. Allocated memory is still 107.0MB. Free memory was 70.1MB in the beginning and 82.1MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:01:54,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.33ms. Allocated memory is still 107.0MB. Free memory was 82.1MB in the beginning and 80.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:01:54,806 INFO L158 Benchmark]: Boogie Preprocessor took 36.74ms. Allocated memory is still 107.0MB. Free memory was 80.7MB in the beginning and 79.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:01:54,806 INFO L158 Benchmark]: RCFGBuilder took 390.64ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 70.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:01:54,807 INFO L158 Benchmark]: BuchiAutomizer took 23457.77ms. Allocated memory was 107.0MB in the beginning and 192.9MB in the end (delta: 86.0MB). Free memory was 69.7MB in the beginning and 150.0MB in the end (delta: -80.3MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2022-11-16 12:01:54,807 INFO L158 Benchmark]: Witness Printer took 4.23ms. Allocated memory is still 192.9MB. Free memory is still 150.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:01:54,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 107.0MB. Free memory was 86.5MB in the beginning and 86.4MB in the end (delta: 88.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.53ms. Allocated memory is still 107.0MB. Free memory was 70.1MB in the beginning and 82.1MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.33ms. Allocated memory is still 107.0MB. Free memory was 82.1MB in the beginning and 80.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.74ms. Allocated memory is still 107.0MB. Free memory was 80.7MB in the beginning and 79.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 390.64ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 70.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 23457.77ms. Allocated memory was 107.0MB in the beginning and 192.9MB in the end (delta: 86.0MB). Free memory was 69.7MB in the beginning and 150.0MB in the end (delta: -80.3MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Witness Printer took 4.23ms. Allocated memory is still 192.9MB. Free memory is still 150.0MB. 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 12 terminating modules (8 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 23.3s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 15.9s. Construction of modules took 1.8s. Büchi inclusion checks took 5.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 96 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 611 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 590 mSDsluCounter, 878 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 635 mSDsCounter, 346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2166 IncrementalHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 346 mSolverCounterUnsat, 243 mSDtfsCounter, 2166 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf93 smp78 dnf100 smp100 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 111ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.0s 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 12:01:54,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-16 12:01:55,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-11-16 12:01:55,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-11-16 12:01:55,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-11-16 12:01:55,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-11-16 12:01:55,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-11-16 12:01:56,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-11-16 12:01:56,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-16 12:01:56,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-16 12:01:56,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-16 12:01:56,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80fc8fda-85cf-4638-8d0a-ef2da252c577/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE