./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2329fc70 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_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8 --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 eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- 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-2329fc7 [2022-12-13 21:03:38,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:03:38,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:03:38,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:03:38,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:03:38,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:03:38,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:03:38,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:03:38,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:03:38,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:03:38,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:03:38,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:03:38,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:03:38,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:03:38,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:03:38,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:03:38,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:03:38,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:03:38,862 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:03:38,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:03:38,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:03:38,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:03:38,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:03:38,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:03:38,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:03:38,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:03:38,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:03:38,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:03:38,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:03:38,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:03:38,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:03:38,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:03:38,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:03:38,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:03:38,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:03:38,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:03:38,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:03:38,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:03:38,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:03:38,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:03:38,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:03:38,883 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 21:03:38,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:03:38,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:03:38,905 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:03:38,905 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:03:38,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:03:38,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:03:38,907 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:03:38,907 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 21:03:38,907 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 21:03:38,907 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 21:03:38,907 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 21:03:38,907 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 21:03:38,908 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 21:03:38,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:03:38,908 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:03:38,908 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:03:38,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:03:38,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:03:38,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:03:38,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 21:03:38,909 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 21:03:38,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 21:03:38,909 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:03:38,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:03:38,909 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 21:03:38,909 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:03:38,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 21:03:38,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:03:38,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:03:38,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:03:38,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:03:38,911 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 21:03:38,911 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_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2022-12-13 21:03:39,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:03:39,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:03:39,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:03:39,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:03:39,105 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:03:39,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2022-12-13 21:03:41,576 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:03:41,738 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:03:41,739 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2022-12-13 21:03:41,743 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/data/7a28f6794/4d0f4c8b9ef6458d8ca60091a6441525/FLAGd41dea6ef [2022-12-13 21:03:42,134 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/data/7a28f6794/4d0f4c8b9ef6458d8ca60091a6441525 [2022-12-13 21:03:42,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:03:42,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:03:42,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:03:42,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:03:42,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:03:42,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b680b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42, skipping insertion in model container [2022-12-13 21:03:42,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:03:42,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:03:42,253 WARN L237 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_d4b95fbe-c343-4f28-a686-36e83c017405/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2022-12-13 21:03:42,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:03:42,263 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:03:42,276 WARN L237 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_d4b95fbe-c343-4f28-a686-36e83c017405/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2022-12-13 21:03:42,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:03:42,287 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:03:42,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42 WrapperNode [2022-12-13 21:03:42,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:03:42,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:03:42,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:03:42,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:03:42,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,308 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-12-13 21:03:42,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:03:42,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:03:42,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:03:42,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:03:42,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:03:42,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:03:42,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:03:42,321 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:03:42,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (1/1) ... [2022-12-13 21:03:42,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:42,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:42,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:42,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 21:03:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:03:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:03:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-12-13 21:03:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-12-13 21:03:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-12-13 21:03:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-12-13 21:03:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:03:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:03:42,424 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:03:42,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:03:42,498 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:03:42,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:03:42,503 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 21:03:42,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:42 BoogieIcfgContainer [2022-12-13 21:03:42,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:03:42,505 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 21:03:42,505 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 21:03:42,508 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 21:03:42,508 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:03:42,509 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 09:03:42" (1/3) ... [2022-12-13 21:03:42,509 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53d6a8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 09:03:42, skipping insertion in model container [2022-12-13 21:03:42,509 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:03:42,510 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:03:42" (2/3) ... [2022-12-13 21:03:42,510 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53d6a8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 09:03:42, skipping insertion in model container [2022-12-13 21:03:42,510 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 21:03:42,510 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:42" (3/3) ... [2022-12-13 21:03:42,511 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2022-12-13 21:03:42,553 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 21:03:42,553 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 21:03:42,553 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 21:03:42,554 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 21:03:42,554 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 21:03:42,554 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 21:03:42,554 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 21:03:42,554 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 21:03:42,558 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) [2022-12-13 21:03:42,575 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 21:03:42,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:42,575 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:42,580 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 21:03:42,580 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:42,581 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 21:03:42,581 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) [2022-12-13 21:03:42,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 21:03:42,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:42,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:42,584 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 21:03:42,584 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:42,590 INFO L748 eck$LassoCheckResult]: Stem: 24#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 12#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17#$Ultimate##0true [2022-12-13 21:03:42,591 INFO L750 eck$LassoCheckResult]: Loop: 17#$Ultimate##0true ~n := #in~n; 7#L10true assume !(~n < 1); 6#L12true assume !(1 == ~n); 8#L15true call #t~ret4 := fibo2(~n - 1);< 14#$Ultimate##0true ~n := #in~n; 10#L20true assume !(~n < 1); 13#L22true assume !(1 == ~n); 20#L25true call #t~ret6 := fibo1(~n - 1);< 17#$Ultimate##0true [2022-12-13 21:03:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-12-13 21:03:42,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:42,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139803971] [2022-12-13 21:03:42,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:42,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:42,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:42,691 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:42,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-12-13 21:03:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:42,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978907144] [2022-12-13 21:03:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:42,701 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:42,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:42,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-12-13 21:03:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:42,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448624273] [2022-12-13 21:03:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:42,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:42,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:42,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:42,889 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:03:42,890 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:03:42,890 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:03:42,890 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:03:42,890 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:03:42,890 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:42,890 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:03:42,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:03:42,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2022-12-13 21:03:42,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:03:42,891 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:03:42,902 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:42,911 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:42,913 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:42,916 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:42,918 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:42,920 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:42,922 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:42,924 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:42,976 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:03:42,977 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:03:42,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:42,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:42,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:42,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 21:03:42,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:42,983 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,000 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:43,000 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:43,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:43,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 21:03:43,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:43,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,021 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:43,021 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:43,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 21:03:43,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 21:03:43,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:43,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:43,040 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:43,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:43,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 21:03:43,046 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:43,046 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,057 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:43,057 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:43,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 21:03:43,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 21:03:43,063 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:43,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,075 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:43,075 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:43,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 21:03:43,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,080 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 21:03:43,082 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:43,082 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,094 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:43,094 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:43,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 21:03:43,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 21:03:43,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:43,100 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,112 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:43,112 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:43,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:43,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 21:03:43,118 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:43,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:43,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,133 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 21:03:43,135 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:03:43,135 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:43,194 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:03:43,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-12-13 21:03:43,197 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:03:43,197 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:03:43,197 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:03:43,197 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:03:43,198 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:03:43,198 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,198 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:03:43,198 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:03:43,198 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2022-12-13 21:03:43,198 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:03:43,198 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:03:43,199 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:43,202 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:43,204 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:43,206 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:43,207 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:43,209 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:43,216 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:43,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:43,250 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:03:43,255 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:03:43,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,257 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 21:03:43,259 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 [2022-12-13 21:03:43,270 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:43,270 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:43,270 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:43,270 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:43,270 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:43,272 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:43,272 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:43,274 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:43,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 21:03:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 21:03:43,280 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 [2022-12-13 21:03:43,290 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:43,290 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:43,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:43,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:43,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:43,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:43,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:43,293 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:43,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 21:03:43,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 21:03:43,299 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 [2022-12-13 21:03:43,308 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:43,308 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:43,308 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:43,308 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:43,308 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:43,309 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:43,309 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:43,311 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:43,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 21:03:43,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,314 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 21:03:43,316 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 [2022-12-13 21:03:43,326 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:43,326 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:43,326 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:43,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:43,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:43,327 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:43,327 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:43,329 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:43,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:43,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,333 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 21:03:43,335 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 [2022-12-13 21:03:43,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:43,345 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:43,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:43,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:43,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:43,346 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:43,346 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:43,348 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:43,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:43,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,352 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 21:03:43,354 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 [2022-12-13 21:03:43,364 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:43,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:43,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:43,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:43,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:43,375 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:43,375 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:43,378 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:03:43,383 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 21:03:43,383 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 21:03:43,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:43,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:43,429 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:43,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 21:03:43,431 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:03:43,431 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:03:43,431 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:03:43,432 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-12-13 21:03:43,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 21:03:43,437 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:03:43,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:43,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:03:43,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:43,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:03:43,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:43,584 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 [2022-12-13 21:03:43,586 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) [2022-12-13 21:03:43,729 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. [2022-12-13 21:03:43,730 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 [2022-12-13 21:03:43,734 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) [2022-12-13 21:03:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-12-13 21:03:43,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-12-13 21:03:43,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:43,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-12-13 21:03:43,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:43,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-12-13 21:03:43,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:43,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-12-13 21:03:43,744 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 21:03:43,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-12-13 21:03:43,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-12-13 21:03:43,751 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-12-13 21:03:43,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-12-13 21:03:43,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:43,753 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-12-13 21:03:43,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-12-13 21:03:43,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-12-13 21:03:43,775 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) [2022-12-13 21:03:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-12-13 21:03:43,778 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-12-13 21:03:43,778 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-12-13 21:03:43,778 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 21:03:43,778 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-12-13 21:03:43,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 21:03:43,780 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:43,780 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:43,781 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:43,781 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:43,781 INFO L748 eck$LassoCheckResult]: Stem: 234#$Ultimate##0 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); 221#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; 216#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 215#$Ultimate##0 ~n := #in~n; 217#L10 assume !(~n < 1); 227#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 231#$Ultimate##0 ~n := #in~n; 245#L20 assume !(~n < 1); 246#L22 assume !(1 == ~n); 201#L25 call #t~ret6 := fibo1(~n - 1);< 218#$Ultimate##0 ~n := #in~n; 220#L10 assume ~n < 1;#res := 0; 207#fibo1FINAL assume true; 208#fibo1EXIT >#46#return; 209#L25-1 [2022-12-13 21:03:43,781 INFO L750 eck$LassoCheckResult]: Loop: 209#L25-1 call #t~ret7 := fibo1(~n - 2);< 214#$Ultimate##0 ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 213#L15 call #t~ret4 := fibo2(~n - 1);< 223#$Ultimate##0 ~n := #in~n; 243#L20 assume !(~n < 1); 244#L22 assume !(1 == ~n); 222#L25 call #t~ret6 := fibo1(~n - 1);< 214#$Ultimate##0 ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 236#fibo1FINAL assume true; 237#fibo1EXIT >#46#return; 209#L25-1 [2022-12-13 21:03:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:43,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-12-13 21:03:43,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:43,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198039498] [2022-12-13 21:03:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:43,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:43,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:03:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:03:43,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:43,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198039498] [2022-12-13 21:03:43,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198039498] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:43,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:43,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:03:43,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724711362] [2022-12-13 21:03:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:43,884 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 21:03:43,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:43,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-12-13 21:03:43,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:43,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567680941] [2022-12-13 21:03:43,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:43,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:43,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:03:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:43,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567680941] [2022-12-13 21:03:43,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567680941] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:03:43,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:03:43,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:03:43,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462487999] [2022-12-13 21:03:43,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:03:43,936 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 21:03:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:43,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:03:43,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:03:43,939 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) [2022-12-13 21:03:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:43,990 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-12-13 21:03:43,990 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-12-13 21:03:43,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 21:03:43,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-12-13 21:03:43,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-12-13 21:03:43,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-12-13 21:03:43,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-12-13 21:03:43,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:43,995 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-12-13 21:03:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-12-13 21:03:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-12-13 21:03:43,999 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) [2022-12-13 21:03:44,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-12-13 21:03:44,000 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-12-13 21:03:44,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:03:44,001 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-12-13 21:03:44,001 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 21:03:44,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-12-13 21:03:44,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 21:03:44,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:44,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:44,004 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:44,004 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:44,004 INFO L748 eck$LassoCheckResult]: Stem: 379#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 362#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 363#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 364#$Ultimate##0 ~n := #in~n; 365#L10 assume !(~n < 1); 393#L12 assume !(1 == ~n); 357#L15 call #t~ret4 := fibo2(~n - 1);< 377#$Ultimate##0 ~n := #in~n; 394#L20 assume !(~n < 1); 395#L22 assume !(1 == ~n); 346#L25 call #t~ret6 := fibo1(~n - 1);< 366#$Ultimate##0 ~n := #in~n; 368#L10 assume !(~n < 1); 371#L12 assume 1 == ~n;#res := 1; 372#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 353#L25-1 [2022-12-13 21:03:44,004 INFO L750 eck$LassoCheckResult]: Loop: 353#L25-1 call #t~ret7 := fibo1(~n - 2);< 360#$Ultimate##0 ~n := #in~n; 386#L10 assume !(~n < 1); 385#L12 assume !(1 == ~n); 359#L15 call #t~ret4 := fibo2(~n - 1);< 390#$Ultimate##0 ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 354#L25 call #t~ret6 := fibo1(~n - 1);< 360#$Ultimate##0 ~n := #in~n; 386#L10 assume !(~n < 1); 385#L12 assume 1 == ~n;#res := 1; 382#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 353#L25-1 [2022-12-13 21:03:44,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:44,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-12-13 21:03:44,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:44,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654669756] [2022-12-13 21:03:44,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:44,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:44,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:03:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:44,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:44,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:44,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654669756] [2022-12-13 21:03:44,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654669756] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:44,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141536429] [2022-12-13 21:03:44,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:44,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:44,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:44,103 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:44,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 21:03:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:44,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:03:44,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:44,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:44,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:44,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141536429] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:44,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:44,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-12-13 21:03:44,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384868473] [2022-12-13 21:03:44,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:44,257 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 21:03:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-12-13 21:03:44,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:44,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271747828] [2022-12-13 21:03:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:44,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:44,264 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:44,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:44,384 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:03:44,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:03:44,384 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:03:44,384 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:03:44,384 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:03:44,385 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:44,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:03:44,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:03:44,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2022-12-13 21:03:44,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:03:44,385 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:03:44,385 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:44,387 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:44,388 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:44,390 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:44,391 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:44,395 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:44,397 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:44,398 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:44,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:44,447 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:03:44,447 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:03:44,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:44,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:44,448 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:44,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 21:03:44,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:44,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:44,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:44,462 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:44,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 21:03:44,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:44,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:44,465 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:44,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 21:03:44,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:44,468 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:44,479 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:44,479 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:44,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 21:03:44,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:44,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:44,483 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:44,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 21:03:44,485 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:44,485 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:44,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:44,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:44,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 21:03:44,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:44,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:44,500 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:44,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 21:03:44,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:44,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:44,513 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:44,513 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:44,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 21:03:44,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:44,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:44,517 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:44,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 21:03:44,519 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:44,519 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:44,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:44,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:44,535 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:44,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 21:03:44,537 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:03:44,537 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:45,688 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:03:45,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 21:03:45,692 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:03:45,692 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:03:45,692 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:03:45,692 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:03:45,692 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:03:45,692 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:45,692 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:03:45,692 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:03:45,692 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2022-12-13 21:03:45,692 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:03:45,692 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:03:45,693 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:45,695 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:45,696 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:45,697 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:45,701 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:45,702 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:45,703 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:45,705 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:45,734 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:03:45,734 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:03:45,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:45,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:45,735 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:45,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 21:03:45,737 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 [2022-12-13 21:03:45,747 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:45,747 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:45,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:45,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:45,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:45,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:45,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:45,749 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:45,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 21:03:45,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:45,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:45,752 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:45,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 21:03:45,754 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 [2022-12-13 21:03:45,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:45,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:45,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:45,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:45,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:45,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:45,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:45,766 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:45,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-12-13 21:03:45,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:45,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:45,769 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:45,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 21:03:45,771 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 [2022-12-13 21:03:45,781 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:45,781 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:45,781 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:45,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:45,781 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:45,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:45,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:45,783 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:45,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-12-13 21:03:45,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:45,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:45,786 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:45,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 21:03:45,788 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 [2022-12-13 21:03:45,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:45,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:45,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:45,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:45,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:45,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:45,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:45,803 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:03:45,806 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 21:03:45,806 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 21:03:45,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:45,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:45,807 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:45,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 21:03:45,809 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:03:45,809 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:03:45,809 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:03:45,809 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-12-13 21:03:45,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-12-13 21:03:45,812 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:03:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:45,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:03:45,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:45,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 21:03:45,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:45,986 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 [2022-12-13 21:03:45,987 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) [2022-12-13 21:03:46,296 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. [2022-12-13 21:03:46,296 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 [2022-12-13 21:03:46,297 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) [2022-12-13 21:03:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-12-13 21:03:46,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-12-13 21:03:46,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:46,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-12-13 21:03:46,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:46,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-12-13 21:03:46,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:46,300 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-12-13 21:03:46,304 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 21:03:46,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-12-13 21:03:46,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-12-13 21:03:46,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-12-13 21:03:46,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-12-13 21:03:46,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:46,310 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-12-13 21:03:46,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-12-13 21:03:46,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-12-13 21:03:46,322 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) [2022-12-13 21:03:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-12-13 21:03:46,324 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-12-13 21:03:46,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:46,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 21:03:46,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 21:03:46,325 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) [2022-12-13 21:03:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:46,487 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2022-12-13 21:03:46,487 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2022-12-13 21:03:46,492 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 21:03:46,496 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2022-12-13 21:03:46,497 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2022-12-13 21:03:46,497 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2022-12-13 21:03:46,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2022-12-13 21:03:46,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:46,497 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2022-12-13 21:03:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2022-12-13 21:03:46,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2022-12-13 21:03:46,504 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) [2022-12-13 21:03:46,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2022-12-13 21:03:46,505 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-12-13 21:03:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:03:46,506 INFO L428 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-12-13 21:03:46,506 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 21:03:46,506 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2022-12-13 21:03:46,508 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 21:03:46,508 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:46,508 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:46,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-12-13 21:03:46,517 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] [2022-12-13 21:03:46,518 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] [2022-12-13 21:03:46,518 INFO L748 eck$LassoCheckResult]: Stem: 1274#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1248#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 1249#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1277#$Ultimate##0 ~n := #in~n; 1271#L10 assume !(~n < 1); 1266#L12 assume !(1 == ~n); 1219#L15 call #t~ret4 := fibo2(~n - 1);< 1227#$Ultimate##0 ~n := #in~n; 1228#L20 assume !(~n < 1); 1218#L22 assume !(1 == ~n); 1220#L25 call #t~ret6 := fibo1(~n - 1);< 1250#$Ultimate##0 ~n := #in~n; 1307#L10 assume !(~n < 1); 1304#L12 assume !(1 == ~n); 1300#L15 call #t~ret4 := fibo2(~n - 1);< 1301#$Ultimate##0 ~n := #in~n; 1305#L20 assume !(~n < 1); 1306#L22 assume !(1 == ~n); 1253#L25 call #t~ret6 := fibo1(~n - 1);< 1250#$Ultimate##0 ~n := #in~n; 1307#L10 assume !(~n < 1); 1304#L12 assume !(1 == ~n); 1300#L15 call #t~ret4 := fibo2(~n - 1);< 1301#$Ultimate##0 ~n := #in~n; 1305#L20 assume ~n < 1;#res := 0; 1303#fibo2FINAL assume true; 1299#fibo2EXIT >#50#return; 1252#L15-1 call #t~ret5 := fibo2(~n - 2);< 1254#$Ultimate##0 ~n := #in~n; 1380#L20 assume !(~n < 1); 1379#L22 assume !(1 == ~n); 1253#L25 call #t~ret6 := fibo1(~n - 1);< 1250#$Ultimate##0 ~n := #in~n; 1309#L10 assume !(~n < 1); 1314#L12 assume 1 == ~n;#res := 1; 1313#fibo1FINAL assume true; 1312#fibo1EXIT >#46#return; 1297#L25-1 call #t~ret7 := fibo1(~n - 2);< 1240#$Ultimate##0 ~n := #in~n; 1302#L10 assume !(~n < 1); 1298#L12 assume !(1 == ~n); 1238#L15 call #t~ret4 := fibo2(~n - 1);< 1295#$Ultimate##0 ~n := #in~n; 1294#L20 assume ~n < 1;#res := 0; 1268#fibo2FINAL assume true; 1269#fibo2EXIT >#50#return; 1239#L15-1 call #t~ret5 := fibo2(~n - 2);< 1295#$Ultimate##0 ~n := #in~n; 1294#L20 assume !(~n < 1); 1288#L22 assume 1 == ~n;#res := 1; 1289#fibo2FINAL assume true; 1362#fibo2EXIT >#52#return; 1363#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1381#fibo1FINAL assume true; 1375#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1366#fibo2EXIT >#52#return; 1363#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1381#fibo1FINAL assume true; 1375#fibo1EXIT >#46#return; 1242#L25-1 call #t~ret7 := fibo1(~n - 2);< 1236#$Ultimate##0 ~n := #in~n; 1245#L10 assume !(~n < 1); 1263#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1272#$Ultimate##0 ~n := #in~n; 1377#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1364#L15-1 call #t~ret5 := fibo2(~n - 2);< 1272#$Ultimate##0 ~n := #in~n; 1377#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1363#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1381#fibo1FINAL assume true; 1375#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1366#fibo2EXIT >#50#return; 1364#L15-1 [2022-12-13 21:03:46,518 INFO L750 eck$LassoCheckResult]: Loop: 1364#L15-1 call #t~ret5 := fibo2(~n - 2);< 1272#$Ultimate##0 ~n := #in~n; 1377#L20 assume !(~n < 1); 1378#L22 assume !(1 == ~n); 1243#L25 call #t~ret6 := fibo1(~n - 1);< 1236#$Ultimate##0 ~n := #in~n; 1245#L10 assume !(~n < 1); 1263#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1272#$Ultimate##0 ~n := #in~n; 1377#L20 assume !(~n < 1); 1378#L22 assume !(1 == ~n); 1243#L25 call #t~ret6 := fibo1(~n - 1);< 1236#$Ultimate##0 ~n := #in~n; 1245#L10 assume !(~n < 1); 1263#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1272#$Ultimate##0 ~n := #in~n; 1377#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1364#L15-1 call #t~ret5 := fibo2(~n - 2);< 1272#$Ultimate##0 ~n := #in~n; 1377#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1363#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1381#fibo1FINAL assume true; 1375#fibo1EXIT >#46#return; 1242#L25-1 call #t~ret7 := fibo1(~n - 2);< 1236#$Ultimate##0 ~n := #in~n; 1245#L10 assume !(~n < 1); 1263#L12 assume !(1 == ~n); 1265#L15 call #t~ret4 := fibo2(~n - 1);< 1272#$Ultimate##0 ~n := #in~n; 1377#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1364#L15-1 call #t~ret5 := fibo2(~n - 2);< 1272#$Ultimate##0 ~n := #in~n; 1377#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1363#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1381#fibo1FINAL assume true; 1375#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1366#fibo2EXIT >#50#return; 1364#L15-1 [2022-12-13 21:03:46,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:46,519 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2022-12-13 21:03:46,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:46,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596039828] [2022-12-13 21:03:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 21:03:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 21:03:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-12-13 21:03:46,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:46,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596039828] [2022-12-13 21:03:46,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596039828] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:46,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357948668] [2022-12-13 21:03:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:46,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:46,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:46,893 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:46,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 21:03:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:46,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:03:46,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:47,034 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 21:03:47,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:47,418 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-13 21:03:47,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357948668] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:47,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:47,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 30 [2022-12-13 21:03:47,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583628730] [2022-12-13 21:03:47,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:47,421 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 21:03:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:47,421 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2022-12-13 21:03:47,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:47,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943785746] [2022-12-13 21:03:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 21:03:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 21:03:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943785746] [2022-12-13 21:03:47,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943785746] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:47,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653873089] [2022-12-13 21:03:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:47,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:47,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:47,509 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:47,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 21:03:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:47,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:03:47,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 21:03:47,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 21:03:47,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653873089] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:47,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:47,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2022-12-13 21:03:47,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056567019] [2022-12-13 21:03:47,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:47,787 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 21:03:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:47,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 21:03:47,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:03:47,788 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) [2022-12-13 21:03:47,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:47,940 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2022-12-13 21:03:47,940 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2022-12-13 21:03:47,943 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 21:03:47,947 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2022-12-13 21:03:47,947 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2022-12-13 21:03:47,947 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2022-12-13 21:03:47,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2022-12-13 21:03:47,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:47,948 INFO L218 hiAutomatonCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-12-13 21:03:47,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2022-12-13 21:03:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2022-12-13 21:03:47,959 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) [2022-12-13 21:03:47,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2022-12-13 21:03:47,960 INFO L240 hiAutomatonCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-12-13 21:03:47,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:03:47,961 INFO L428 stractBuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-12-13 21:03:47,962 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 21:03:47,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2022-12-13 21:03:47,963 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 21:03:47,963 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:47,963 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:47,965 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] [2022-12-13 21:03:47,965 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] [2022-12-13 21:03:47,965 INFO L748 eck$LassoCheckResult]: Stem: 2797#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2768#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2769#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2801#$Ultimate##0 ~n := #in~n; 2791#L10 assume !(~n < 1); 2784#L12 assume !(1 == ~n); 2785#L15 call #t~ret4 := fibo2(~n - 1);< 2793#$Ultimate##0 ~n := #in~n; 2920#L20 assume !(~n < 1); 2918#L22 assume !(1 == ~n); 2778#L25 call #t~ret6 := fibo1(~n - 1);< 2815#$Ultimate##0 ~n := #in~n; 2813#L10 assume !(~n < 1); 2812#L12 assume !(1 == ~n); 2796#L15 call #t~ret4 := fibo2(~n - 1);< 2809#$Ultimate##0 ~n := #in~n; 2832#L20 assume !(~n < 1); 2831#L22 assume !(1 == ~n); 2741#L25 call #t~ret6 := fibo1(~n - 1);< 2815#$Ultimate##0 ~n := #in~n; 2816#L10 assume !(~n < 1); 2841#L12 assume 1 == ~n;#res := 1; 2842#fibo1FINAL assume true; 2902#fibo1EXIT >#46#return; 2764#L25-1 call #t~ret7 := fibo1(~n - 2);< 2763#$Ultimate##0 ~n := #in~n; 2765#L10 assume ~n < 1;#res := 0; 2908#fibo1FINAL assume true; 2899#fibo1EXIT >#48#return; 2890#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2889#fibo2FINAL assume true; 2849#fibo2EXIT >#50#return; 2851#L15-1 [2022-12-13 21:03:47,965 INFO L750 eck$LassoCheckResult]: Loop: 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2860#$Ultimate##0 ~n := #in~n; 2875#L20 assume !(~n < 1); 2873#L22 assume !(1 == ~n); 2859#L25 call #t~ret6 := fibo1(~n - 1);< 2869#$Ultimate##0 ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2853#L15 call #t~ret4 := fibo2(~n - 1);< 2860#$Ultimate##0 ~n := #in~n; 2875#L20 assume !(~n < 1); 2873#L22 assume !(1 == ~n); 2859#L25 call #t~ret6 := fibo1(~n - 1);< 2869#$Ultimate##0 ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2853#L15 call #t~ret4 := fibo2(~n - 1);< 2860#$Ultimate##0 ~n := #in~n; 2875#L20 assume !(~n < 1); 2873#L22 assume 1 == ~n;#res := 1; 2870#fibo2FINAL assume true; 2863#fibo2EXIT >#50#return; 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2860#$Ultimate##0 ~n := #in~n; 2875#L20 assume ~n < 1;#res := 0; 2876#fibo2FINAL assume true; 2854#fibo2EXIT >#52#return; 2850#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2915#fibo1FINAL assume true; 2909#fibo1EXIT >#46#return; 2856#L25-1 call #t~ret7 := fibo1(~n - 2);< 2869#$Ultimate##0 ~n := #in~n; 2867#L10 assume !(~n < 1); 2865#L12 assume !(1 == ~n); 2853#L15 call #t~ret4 := fibo2(~n - 1);< 2860#$Ultimate##0 ~n := #in~n; 2875#L20 assume !(~n < 1); 2873#L22 assume 1 == ~n;#res := 1; 2870#fibo2FINAL assume true; 2863#fibo2EXIT >#50#return; 2851#L15-1 call #t~ret5 := fibo2(~n - 2);< 2860#$Ultimate##0 ~n := #in~n; 2875#L20 assume ~n < 1;#res := 0; 2876#fibo2FINAL assume true; 2854#fibo2EXIT >#52#return; 2850#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2915#fibo1FINAL assume true; 2909#fibo1EXIT >#48#return; 2864#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2861#fibo2FINAL assume true; 2852#fibo2EXIT >#50#return; 2851#L15-1 [2022-12-13 21:03:47,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:47,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-12-13 21:03:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:47,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68621979] [2022-12-13 21:03:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:47,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:47,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:47,981 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:47,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:47,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2022-12-13 21:03:47,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:47,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507743181] [2022-12-13 21:03:47,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:47,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 21:03:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-12-13 21:03:48,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:48,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507743181] [2022-12-13 21:03:48,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507743181] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:48,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950248846] [2022-12-13 21:03:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:48,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:48,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:48,154 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:48,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 21:03:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 21:03:48,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:48,247 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 21:03:48,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 21:03:48,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950248846] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:48,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:48,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-12-13 21:03:48,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306571741] [2022-12-13 21:03:48,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:48,521 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 21:03:48,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:48,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 21:03:48,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:03:48,522 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) [2022-12-13 21:03:48,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:48,719 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2022-12-13 21:03:48,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2022-12-13 21:03:48,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-12-13 21:03:48,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2022-12-13 21:03:48,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-12-13 21:03:48,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2022-12-13 21:03:48,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2022-12-13 21:03:48,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:48,723 INFO L218 hiAutomatonCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-12-13 21:03:48,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2022-12-13 21:03:48,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-12-13 21:03:48,728 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) [2022-12-13 21:03:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2022-12-13 21:03:48,729 INFO L240 hiAutomatonCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-12-13 21:03:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 21:03:48,731 INFO L428 stractBuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-12-13 21:03:48,731 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 21:03:48,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2022-12-13 21:03:48,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-12-13 21:03:48,732 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:48,732 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:48,733 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] [2022-12-13 21:03:48,733 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:48,733 INFO L748 eck$LassoCheckResult]: Stem: 3534#$Ultimate##0 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); 3512#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; 3513#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3535#$Ultimate##0 ~n := #in~n; 3538#L10 assume !(~n < 1); 3525#L12 assume !(1 == ~n); 3490#L15 call #t~ret4 := fibo2(~n - 1);< 3529#$Ultimate##0 ~n := #in~n; 3574#L20 assume !(~n < 1); 3489#L22 assume !(1 == ~n); 3491#L25 call #t~ret6 := fibo1(~n - 1);< 3515#$Ultimate##0 ~n := #in~n; 3517#L10 assume !(~n < 1); 3528#L12 assume !(1 == ~n); 3496#L15 call #t~ret4 := fibo2(~n - 1);< 3495#$Ultimate##0 ~n := #in~n; 3497#L20 assume !(~n < 1); 3533#L22 assume !(1 == ~n); 3510#L25 call #t~ret6 := fibo1(~n - 1);< 3515#$Ultimate##0 ~n := #in~n; 3516#L10 assume !(~n < 1); 3539#L12 assume 1 == ~n;#res := 1; 3540#fibo1FINAL assume true; 3569#fibo1EXIT >#46#return; 3564#L25-1 call #t~ret7 := fibo1(~n - 2);< 3567#$Ultimate##0 ~n := #in~n; 3578#L10 assume ~n < 1;#res := 0; 3572#fibo1FINAL assume true; 3563#fibo1EXIT >#48#return; 3561#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3560#fibo2FINAL assume true; 3557#fibo2EXIT >#50#return; 3507#L15-1 [2022-12-13 21:03:48,733 INFO L750 eck$LassoCheckResult]: Loop: 3507#L15-1 call #t~ret5 := fibo2(~n - 2);< 3555#$Ultimate##0 ~n := #in~n; 3583#L20 assume !(~n < 1); 3546#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3519#$Ultimate##0 ~n := #in~n; 3542#L10 assume !(~n < 1); 3543#L12 assume !(1 == ~n); 3493#L15 call #t~ret4 := fibo2(~n - 1);< 3492#$Ultimate##0 ~n := #in~n; 3494#L20 assume !(~n < 1); 3546#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3519#$Ultimate##0 ~n := #in~n; 3542#L10 assume !(~n < 1); 3543#L12 assume 1 == ~n;#res := 1; 3524#fibo1FINAL assume true; 3584#fibo1EXIT >#46#return; 3499#L25-1 call #t~ret7 := fibo1(~n - 2);< 3508#$Ultimate##0 ~n := #in~n; 3514#L10 assume ~n < 1;#res := 0; 3498#fibo1FINAL assume true; 3506#fibo1EXIT >#48#return; 3521#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3522#fibo2FINAL assume true; 3556#fibo2EXIT >#50#return; 3507#L15-1 [2022-12-13 21:03:48,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:48,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2022-12-13 21:03:48,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:48,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132312527] [2022-12-13 21:03:48,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:48,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:48,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:48,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2022-12-13 21:03:48,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:48,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446476888] [2022-12-13 21:03:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:48,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:48,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:48,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:48,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:48,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2022-12-13 21:03:48,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:48,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932364682] [2022-12-13 21:03:48,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:48,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 21:03:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 21:03:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 21:03:48,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:48,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932364682] [2022-12-13 21:03:48,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932364682] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:48,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100349327] [2022-12-13 21:03:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:48,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:48,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:48,850 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:48,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 21:03:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:48,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:03:48,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 21:03:48,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 21:03:49,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100349327] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:49,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:49,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2022-12-13 21:03:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703790935] [2022-12-13 21:03:49,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:49,241 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:03:49,242 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:03:49,242 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:03:49,242 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:03:49,242 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:03:49,242 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:49,242 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:03:49,242 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:03:49,242 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2022-12-13 21:03:49,242 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:03:49,242 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:03:49,243 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,244 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,251 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,253 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,255 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,256 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,257 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,258 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,294 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:03:49,294 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:03:49,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:49,295 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:49,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-12-13 21:03:49,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:49,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:49,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:49,308 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:49,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:49,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:49,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:49,312 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:49,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-12-13 21:03:49,314 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:49,314 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:49,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-12-13 21:03:49,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:49,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:49,328 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:49,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-12-13 21:03:49,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:03:49,330 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:49,695 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:03:49,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:49,698 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:03:49,698 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:03:49,698 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:03:49,698 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:03:49,698 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:03:49,698 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:49,698 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:03:49,698 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:03:49,698 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2022-12-13 21:03:49,698 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:03:49,698 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:03:49,699 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,700 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,706 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,707 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,708 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,709 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,710 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,711 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:49,749 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:03:49,749 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:03:49,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:49,750 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:49,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-12-13 21:03:49,752 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 [2022-12-13 21:03:49,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:49,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:49,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:49,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:49,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:49,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:49,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:49,764 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:49,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:49,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:49,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:49,767 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:49,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-12-13 21:03:49,769 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 [2022-12-13 21:03:49,779 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:49,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:49,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:49,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:49,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:49,780 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:49,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:49,782 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:03:49,785 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 21:03:49,785 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 21:03:49,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:49,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:49,786 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:49,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-12-13 21:03:49,788 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:03:49,788 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:03:49,788 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:03:49,788 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-12-13 21:03:49,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:49,790 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:03:49,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:49,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:03:49,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:49,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 21:03:49,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:03:50,084 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 [2022-12-13 21:03:50,084 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) [2022-12-13 21:03:50,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:50,338 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. [2022-12-13 21:03:50,338 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 [2022-12-13 21:03:50,339 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) [2022-12-13 21:03:50,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2022-12-13 21:03:50,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2022-12-13 21:03:50,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:50,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2022-12-13 21:03:50,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:50,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2022-12-13 21:03:50,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:50,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2022-12-13 21:03:50,348 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2022-12-13 21:03:50,351 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2022-12-13 21:03:50,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2022-12-13 21:03:50,352 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2022-12-13 21:03:50,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2022-12-13 21:03:50,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:50,352 INFO L218 hiAutomatonCegarLoop]: Abstraction has 292 states and 395 transitions. [2022-12-13 21:03:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2022-12-13 21:03:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2022-12-13 21:03:50,364 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) [2022-12-13 21:03:50,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2022-12-13 21:03:50,366 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 357 transitions. [2022-12-13 21:03:50,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:50,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:03:50,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:03:50,367 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) [2022-12-13 21:03:50,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:50,484 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2022-12-13 21:03:50,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2022-12-13 21:03:50,485 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-12-13 21:03:50,487 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2022-12-13 21:03:50,487 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-12-13 21:03:50,487 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-12-13 21:03:50,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2022-12-13 21:03:50,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:50,487 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-12-13 21:03:50,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2022-12-13 21:03:50,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2022-12-13 21:03:50,491 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) [2022-12-13 21:03:50,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2022-12-13 21:03:50,491 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-12-13 21:03:50,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 21:03:50,492 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-12-13 21:03:50,492 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 21:03:50,493 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2022-12-13 21:03:50,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-12-13 21:03:50,494 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:50,494 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:50,495 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] [2022-12-13 21:03:50,495 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] [2022-12-13 21:03:50,495 INFO L748 eck$LassoCheckResult]: Stem: 5041#$Ultimate##0 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); 5027#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; 5028#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5044#$Ultimate##0 ~n := #in~n; 5045#L10 assume !(~n < 1); 5034#L12 assume !(1 == ~n); 5005#L15 call #t~ret4 := fibo2(~n - 1);< 5062#$Ultimate##0 ~n := #in~n; 5096#L20 assume !(~n < 1); 5004#L22 assume !(1 == ~n); 5006#L25 call #t~ret6 := fibo1(~n - 1);< 5023#$Ultimate##0 ~n := #in~n; 5026#L10 assume !(~n < 1); 5037#L12 assume !(1 == ~n); 5011#L15 call #t~ret4 := fibo2(~n - 1);< 5010#$Ultimate##0 ~n := #in~n; 5012#L20 assume !(~n < 1); 5040#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#$Ultimate##0 ~n := #in~n; 5026#L10 assume !(~n < 1); 5037#L12 assume !(1 == ~n); 5011#L15 call #t~ret4 := fibo2(~n - 1);< 5010#$Ultimate##0 ~n := #in~n; 5012#L20 assume !(~n < 1); 5040#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#$Ultimate##0 ~n := #in~n; 5025#L10 assume !(~n < 1); 5054#L12 assume 1 == ~n;#res := 1; 5060#fibo1FINAL assume true; 5104#fibo1EXIT >#46#return; 5016#L25-1 call #t~ret7 := fibo1(~n - 2);< 5017#$Ultimate##0 ~n := #in~n; 5116#L10 assume ~n < 1;#res := 0; 5114#fibo1FINAL assume true; 5018#fibo1EXIT >#48#return; 5019#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5032#fibo2FINAL assume true; 5078#fibo2EXIT >#50#return; 5074#L15-1 call #t~ret5 := fibo2(~n - 2);< 5075#$Ultimate##0 ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5106#fibo2FINAL assume true; 5073#fibo2EXIT >#52#return; 5071#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5070#fibo1FINAL assume true; 5068#fibo1EXIT >#46#return; 5047#L25-1 [2022-12-13 21:03:50,496 INFO L750 eck$LassoCheckResult]: Loop: 5047#L25-1 call #t~ret7 := fibo1(~n - 2);< 5031#$Ultimate##0 ~n := #in~n; 5056#L10 assume !(~n < 1); 5046#L12 assume !(1 == ~n); 5052#L15 call #t~ret4 := fibo2(~n - 1);< 5057#$Ultimate##0 ~n := #in~n; 5058#L20 assume !(~n < 1); 5076#L22 assume !(1 == ~n); 5049#L25 call #t~ret6 := fibo1(~n - 1);< 5031#$Ultimate##0 ~n := #in~n; 5056#L10 assume !(~n < 1); 5046#L12 assume !(1 == ~n); 5052#L15 call #t~ret4 := fibo2(~n - 1);< 5057#$Ultimate##0 ~n := #in~n; 5058#L20 assume !(~n < 1); 5076#L22 assume !(1 == ~n); 5049#L25 call #t~ret6 := fibo1(~n - 1);< 5031#$Ultimate##0 ~n := #in~n; 5056#L10 assume !(~n < 1); 5046#L12 assume 1 == ~n;#res := 1; 5051#fibo1FINAL assume true; 5102#fibo1EXIT >#46#return; 5021#L25-1 call #t~ret7 := fibo1(~n - 2);< 5020#$Ultimate##0 ~n := #in~n; 5022#L10 assume ~n < 1;#res := 0; 5036#fibo1FINAL assume true; 5115#fibo1EXIT >#48#return; 5103#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5101#fibo2FINAL assume true; 5087#fibo2EXIT >#50#return; 5082#L15-1 call #t~ret5 := fibo2(~n - 2);< 5086#$Ultimate##0 ~n := #in~n; 5099#L20 assume ~n < 1;#res := 0; 5085#fibo2FINAL assume true; 5080#fibo2EXIT >#52#return; 5083#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5092#fibo1FINAL assume true; 5069#fibo1EXIT >#46#return; 5047#L25-1 [2022-12-13 21:03:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2022-12-13 21:03:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:50,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12488476] [2022-12-13 21:03:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:03:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:50,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 21:03:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,639 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 21:03:50,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12488476] [2022-12-13 21:03:50,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12488476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936749976] [2022-12-13 21:03:50,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:50,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:50,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:50,640 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:50,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 21:03:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:03:50,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:50,736 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:03:50,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:03:50,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936749976] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:50,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:50,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-12-13 21:03:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940180910] [2022-12-13 21:03:50,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:50,877 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 21:03:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2022-12-13 21:03:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:50,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598275995] [2022-12-13 21:03:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:50,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 21:03:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:50,967 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 21:03:50,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:50,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598275995] [2022-12-13 21:03:50,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598275995] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:50,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573975666] [2022-12-13 21:03:50,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:50,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:50,968 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:50,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-13 21:03:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:03:51,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:51,039 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 21:03:51,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:51,195 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 21:03:51,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573975666] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:51,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:51,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-12-13 21:03:51,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963599508] [2022-12-13 21:03:51,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:51,197 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 21:03:51,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:51,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 21:03:51,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-12-13 21:03:51,197 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) [2022-12-13 21:03:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:51,311 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2022-12-13 21:03:51,311 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2022-12-13 21:03:51,312 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-12-13 21:03:51,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2022-12-13 21:03:51,313 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-12-13 21:03:51,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-12-13 21:03:51,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2022-12-13 21:03:51,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:51,313 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2022-12-13 21:03:51,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2022-12-13 21:03:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-12-13 21:03:51,315 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) [2022-12-13 21:03:51,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2022-12-13 21:03:51,315 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-12-13 21:03:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 21:03:51,316 INFO L428 stractBuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-12-13 21:03:51,316 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-12-13 21:03:51,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2022-12-13 21:03:51,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-12-13 21:03:51,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:51,317 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:51,318 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] [2022-12-13 21:03:51,318 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] [2022-12-13 21:03:51,318 INFO L748 eck$LassoCheckResult]: Stem: 5955#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5933#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5934#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5956#$Ultimate##0 ~n := #in~n; 5958#L10 assume !(~n < 1); 5943#L12 assume !(1 == ~n); 5921#L15 call #t~ret4 := fibo2(~n - 1);< 5920#$Ultimate##0 ~n := #in~n; 5922#L20 assume !(~n < 1); 5984#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5930#$Ultimate##0 ~n := #in~n; 5932#L10 assume !(~n < 1); 5948#L12 assume !(1 == ~n); 5915#L15 call #t~ret4 := fibo2(~n - 1);< 5950#$Ultimate##0 ~n := #in~n; 5952#L20 assume !(~n < 1); 5914#L22 assume !(1 == ~n); 5916#L25 call #t~ret6 := fibo1(~n - 1);< 5930#$Ultimate##0 ~n := #in~n; 5932#L10 assume !(~n < 1); 5948#L12 assume !(1 == ~n); 5915#L15 call #t~ret4 := fibo2(~n - 1);< 5950#$Ultimate##0 ~n := #in~n; 5952#L20 assume !(~n < 1); 5914#L22 assume !(1 == ~n); 5916#L25 call #t~ret6 := fibo1(~n - 1);< 5930#$Ultimate##0 ~n := #in~n; 5931#L10 assume !(~n < 1); 5968#L12 assume 1 == ~n;#res := 1; 5973#fibo1FINAL assume true; 6018#fibo1EXIT >#46#return; 6016#L25-1 call #t~ret7 := fibo1(~n - 2);< 6017#$Ultimate##0 ~n := #in~n; 6020#L10 assume ~n < 1;#res := 0; 6019#fibo1FINAL assume true; 6015#fibo1EXIT >#48#return; 6014#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6012#fibo2FINAL assume true; 6009#fibo2EXIT >#50#return; 5918#L15-1 call #t~ret5 := fibo2(~n - 2);< 5917#$Ultimate##0 ~n := #in~n; 5919#L20 assume !(~n < 1); 5951#L22 assume 1 == ~n;#res := 1; 6021#fibo2FINAL assume true; 6008#fibo2EXIT >#52#return; 5986#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5985#fibo1FINAL assume true; 5982#fibo1EXIT >#46#return; 5961#L25-1 [2022-12-13 21:03:51,318 INFO L750 eck$LassoCheckResult]: Loop: 5961#L25-1 call #t~ret7 := fibo1(~n - 2);< 5981#$Ultimate##0 ~n := #in~n; 6029#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5965#L15 call #t~ret4 := fibo2(~n - 1);< 5972#$Ultimate##0 ~n := #in~n; 6004#L20 assume !(~n < 1); 5966#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5937#$Ultimate##0 ~n := #in~n; 5975#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5965#L15 call #t~ret4 := fibo2(~n - 1);< 5972#$Ultimate##0 ~n := #in~n; 6004#L20 assume !(~n < 1); 5966#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5937#$Ultimate##0 ~n := #in~n; 5975#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5965#L15 call #t~ret4 := fibo2(~n - 1);< 5972#$Ultimate##0 ~n := #in~n; 6004#L20 assume !(~n < 1); 5966#L22 assume 1 == ~n;#res := 1; 5967#fibo2FINAL assume true; 6005#fibo2EXIT >#50#return; 6002#L15-1 call #t~ret5 := fibo2(~n - 2);< 6003#$Ultimate##0 ~n := #in~n; 6007#L20 assume ~n < 1;#res := 0; 6006#fibo2FINAL assume true; 6001#fibo2EXIT >#52#return; 6000#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5987#fibo1FINAL assume true; 5978#fibo1EXIT >#46#return; 5980#L25-1 call #t~ret7 := fibo1(~n - 2);< 5999#$Ultimate##0 ~n := #in~n; 6030#L10 assume ~n < 1;#res := 0; 5947#fibo1FINAL assume true; 6025#fibo1EXIT >#48#return; 5998#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5996#fibo2FINAL assume true; 5993#fibo2EXIT >#50#return; 5991#L15-1 call #t~ret5 := fibo2(~n - 2);< 5992#$Ultimate##0 ~n := #in~n; 6013#L20 assume !(~n < 1); 6011#L22 assume 1 == ~n;#res := 1; 6010#fibo2FINAL assume true; 5990#fibo2EXIT >#52#return; 5989#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5988#fibo1FINAL assume true; 5983#fibo1EXIT >#46#return; 5961#L25-1 [2022-12-13 21:03:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2022-12-13 21:03:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:51,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473053093] [2022-12-13 21:03:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 21:03:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:51,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 21:03:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 21:03:51,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:51,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473053093] [2022-12-13 21:03:51,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473053093] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:51,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913771877] [2022-12-13 21:03:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:51,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:51,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:51,437 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:51,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-13 21:03:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 21:03:51,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:51,523 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:03:51,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:03:51,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913771877] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:51,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:51,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-12-13 21:03:51,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997622772] [2022-12-13 21:03:51,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:51,684 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 21:03:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2022-12-13 21:03:51,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:51,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897340043] [2022-12-13 21:03:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 21:03:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:51,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 21:03:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 21:03:51,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,798 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 21:03:51,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:51,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897340043] [2022-12-13 21:03:51,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897340043] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:51,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693138864] [2022-12-13 21:03:51,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:51,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:51,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:51,799 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:51,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-12-13 21:03:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:51,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 21:03:51,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 21:03:51,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 21:03:52,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693138864] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:52,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:52,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-12-13 21:03:52,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954095033] [2022-12-13 21:03:52,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:52,071 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 21:03:52,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:52,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 21:03:52,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-12-13 21:03:52,072 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) [2022-12-13 21:03:52,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:52,291 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-12-13 21:03:52,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2022-12-13 21:03:52,292 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-12-13 21:03:52,293 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2022-12-13 21:03:52,293 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-12-13 21:03:52,293 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-12-13 21:03:52,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2022-12-13 21:03:52,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 21:03:52,294 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-12-13 21:03:52,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2022-12-13 21:03:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-12-13 21:03:52,296 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) [2022-12-13 21:03:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-12-13 21:03:52,297 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-12-13 21:03:52,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 21:03:52,297 INFO L428 stractBuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-12-13 21:03:52,297 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-12-13 21:03:52,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2022-12-13 21:03:52,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-12-13 21:03:52,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 21:03:52,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 21:03:52,299 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] [2022-12-13 21:03:52,299 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:03:52,299 INFO L748 eck$LassoCheckResult]: Stem: 6996#$Ultimate##0 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); 6978#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; 6979#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6999#$Ultimate##0 ~n := #in~n; 6991#L10 assume !(~n < 1); 6987#L12 assume !(1 == ~n); 6960#L15 call #t~ret4 := fibo2(~n - 1);< 6959#$Ultimate##0 ~n := #in~n; 6961#L20 assume !(~n < 1); 7010#L22 assume !(1 == ~n); 6975#L25 call #t~ret6 := fibo1(~n - 1);< 6974#$Ultimate##0 ~n := #in~n; 6977#L10 assume !(~n < 1); 7017#L12 assume !(1 == ~n); 6955#L15 call #t~ret4 := fibo2(~n - 1);< 7016#$Ultimate##0 ~n := #in~n; 6995#L20 assume !(~n < 1); 6954#L22 assume !(1 == ~n); 6956#L25 call #t~ret6 := fibo1(~n - 1);< 6974#$Ultimate##0 ~n := #in~n; 6976#L10 assume !(~n < 1); 6985#L12 assume 1 == ~n;#res := 1; 6986#fibo1FINAL assume true; 7037#fibo1EXIT >#46#return; 6972#L25-1 call #t~ret7 := fibo1(~n - 2);< 6971#$Ultimate##0 ~n := #in~n; 6973#L10 assume ~n < 1;#res := 0; 6990#fibo1FINAL assume true; 7020#fibo1EXIT >#48#return; 7019#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7018#fibo2FINAL assume true; 7015#fibo2EXIT >#50#return; 6952#L15-1 call #t~ret5 := fibo2(~n - 2);< 6957#$Ultimate##0 ~n := #in~n; 6958#L20 assume !(~n < 1); 6951#L22 assume 1 == ~n;#res := 1; 6953#fibo2FINAL assume true; 7014#fibo2EXIT >#52#return; 7013#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7011#fibo1FINAL assume true; 7008#fibo1EXIT >#46#return; 6964#L25-1 call #t~ret7 := fibo1(~n - 2);< 7005#$Ultimate##0 ~n := #in~n; 7033#L10 assume !(~n < 1); 7000#L12 [2022-12-13 21:03:52,299 INFO L750 eck$LassoCheckResult]: Loop: 7000#L12 assume !(1 == ~n); 6969#L15 call #t~ret4 := fibo2(~n - 1);< 6992#$Ultimate##0 ~n := #in~n; 7006#L20 assume !(~n < 1); 7012#L22 assume !(1 == ~n); 6963#L25 call #t~ret6 := fibo1(~n - 1);< 6980#$Ultimate##0 ~n := #in~n; 7001#L10 assume !(~n < 1); 7000#L12 [2022-12-13 21:03:52,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:52,299 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2022-12-13 21:03:52,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:52,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888311256] [2022-12-13 21:03:52,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:52,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:52,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:52,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:52,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2022-12-13 21:03:52,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:52,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855764584] [2022-12-13 21:03:52,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:52,317 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 21:03:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 21:03:52,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 21:03:52,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:52,320 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2022-12-13 21:03:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:03:52,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638961941] [2022-12-13 21:03:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:03:52,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:03:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 21:03:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 21:03:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:03:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:52,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 21:03:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 21:03:52,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:03:52,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638961941] [2022-12-13 21:03:52,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638961941] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:03:52,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817564345] [2022-12-13 21:03:52,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:03:52,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:03:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:52,425 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:03:52,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-12-13 21:03:52,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 21:03:52,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:03:52,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 21:03:52,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 21:03:52,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:03:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 21:03:52,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817564345] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:03:52,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:03:52,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2022-12-13 21:03:52,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147407461] [2022-12-13 21:03:52,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:03:52,663 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:03:52,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:03:52,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:03:52,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:03:52,663 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 21:03:52,663 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:52,663 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:03:52,663 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:03:52,663 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2022-12-13 21:03:52,663 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:03:52,663 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:03:52,664 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:52,666 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:52,667 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:52,668 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:52,670 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:52,676 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:52,677 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:52,679 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:52,710 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:03:52,710 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 21:03:52,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:52,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:52,711 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:52,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-12-13 21:03:52,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:52,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:52,725 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:52,725 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:52,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2022-12-13 21:03:52,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:52,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:52,728 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:52,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-12-13 21:03:52,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:52,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:52,741 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:52,741 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:52,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2022-12-13 21:03:52,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:52,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:52,745 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:52,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-12-13 21:03:52,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:52,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:52,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:52,758 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:52,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2022-12-13 21:03:52,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:52,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:52,762 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:52,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-12-13 21:03:52,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:52,764 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:52,776 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 21:03:52,776 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 21:03:52,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2022-12-13 21:03:52,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:52,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:52,779 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:52,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-12-13 21:03:52,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 21:03:52,781 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:52,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2022-12-13 21:03:52,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:52,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:52,805 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:52,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-12-13 21:03:52,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 21:03:52,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 21:03:53,625 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 21:03:53,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2022-12-13 21:03:53,629 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 21:03:53,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 21:03:53,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 21:03:53,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 21:03:53,629 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 21:03:53,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:53,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 21:03:53,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 21:03:53,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2022-12-13 21:03:53,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 21:03:53,629 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 21:03:53,629 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:53,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:53,632 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:53,633 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:53,635 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:53,640 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:53,641 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:53,642 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 21:03:53,671 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 21:03:53,671 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 21:03:53,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:53,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:53,672 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:53,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-12-13 21:03:53,674 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 [2022-12-13 21:03:53,684 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:53,684 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:53,684 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:53,684 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:53,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:53,684 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:53,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:53,686 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:53,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2022-12-13 21:03:53,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:53,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:53,689 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:53,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-12-13 21:03:53,692 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 [2022-12-13 21:03:53,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:53,702 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:53,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:53,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:53,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:53,703 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:53,703 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:53,704 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:53,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2022-12-13 21:03:53,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:53,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:53,707 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:53,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-12-13 21:03:53,709 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 [2022-12-13 21:03:53,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:53,719 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:53,719 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:53,719 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:53,719 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:53,720 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:53,720 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:53,721 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:53,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2022-12-13 21:03:53,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:53,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:53,724 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:53,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-12-13 21:03:53,726 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 21:03:53,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:53,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:53,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:53,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:53,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:53,737 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:53,737 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:53,738 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 21:03:53,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2022-12-13 21:03:53,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:53,741 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:53,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-12-13 21:03:53,743 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 [2022-12-13 21:03:53,753 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 21:03:53,753 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 21:03:53,753 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 21:03:53,753 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 21:03:53,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 21:03:53,755 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 21:03:53,755 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 21:03:53,757 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 21:03:53,758 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 21:03:53,758 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 21:03:53,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 21:03:53,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:03:53,759 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 21:03:53,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-12-13 21:03:53,761 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 21:03:53,761 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 21:03:53,761 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 21:03:53,761 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-12-13 21:03:53,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2022-12-13 21:03:53,764 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 21:03:53,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:53,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 21:03:53,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:53,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2022-12-13 21:03:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:53,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:03:53,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:54,026 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 [2022-12-13 21:03:54,027 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) [2022-12-13 21:03:54,077 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. [2022-12-13 21:03:54,078 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 [2022-12-13 21:03:54,078 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) [2022-12-13 21:03:54,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-12-13 21:03:54,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-12-13 21:03:54,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:54,079 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 21:03:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:54,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 21:03:54,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:54,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:03:54,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:54,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:54,350 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 [2022-12-13 21:03:54,350 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) [2022-12-13 21:03:54,404 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. [2022-12-13 21:03:54,404 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 [2022-12-13 21:03:54,405 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) [2022-12-13 21:03:54,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-12-13 21:03:54,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-12-13 21:03:54,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:54,405 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 21:03:54,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:03:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:54,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 21:03:54,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:03:54,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 21:03:54,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:03:54,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:03:54,639 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 [2022-12-13 21:03:54,640 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) [2022-12-13 21:03:54,703 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. [2022-12-13 21:03:54,704 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 [2022-12-13 21:03:54,704 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) [2022-12-13 21:03:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2022-12-13 21:03:54,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2022-12-13 21:03:54,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:54,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2022-12-13 21:03:54,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:54,705 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2022-12-13 21:03:54,705 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 21:03:54,705 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2022-12-13 21:03:54,706 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 21:03:54,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2022-12-13 21:03:54,706 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 21:03:54,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 21:03:54,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 21:03:54,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:54,706 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:03:54,706 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:03:54,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:03:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:03:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:03:54,707 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) [2022-12-13 21:03:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:03:54,707 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-12-13 21:03:54,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-12-13 21:03:54,707 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 21:03:54,707 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 21:03:54,707 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 21:03:54,707 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 21:03:54,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 21:03:54,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:03:54,707 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:03:54,707 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:03:54,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:03:54,707 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 21:03:54,708 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-12-13 21:03:54,708 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 21:03:54,708 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 21:03:54,708 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 21:03:54,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 09:03:54 BoogieIcfgContainer [2022-12-13 21:03:54,712 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 21:03:54,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:03:54,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:03:54,713 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:03:54,713 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:03:42" (3/4) ... [2022-12-13 21:03:54,715 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 21:03:54,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:03:54,716 INFO L158 Benchmark]: Toolchain (without parser) took 12578.83ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 133.3MB in the beginning and 108.9MB in the end (delta: 24.4MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2022-12-13 21:03:54,716 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 161.5MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:54,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.76ms. Allocated memory is still 161.5MB. Free memory was 133.3MB in the beginning and 123.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 21:03:54,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.24ms. Allocated memory is still 161.5MB. Free memory was 123.2MB in the beginning and 121.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:03:54,716 INFO L158 Benchmark]: Boogie Preprocessor took 11.81ms. Allocated memory is still 161.5MB. Free memory was 121.9MB in the beginning and 121.2MB in the end (delta: 712.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:54,716 INFO L158 Benchmark]: RCFGBuilder took 183.66ms. Allocated memory is still 161.5MB. Free memory was 121.2MB in the beginning and 110.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 21:03:54,717 INFO L158 Benchmark]: BuchiAutomizer took 12207.56ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 110.8MB in the beginning and 108.9MB in the end (delta: 1.9MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2022-12-13 21:03:54,717 INFO L158 Benchmark]: Witness Printer took 2.49ms. Allocated memory is still 195.0MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:03:54,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 161.5MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.76ms. Allocated memory is still 161.5MB. Free memory was 133.3MB in the beginning and 123.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.24ms. Allocated memory is still 161.5MB. Free memory was 123.2MB in the beginning and 121.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.81ms. Allocated memory is still 161.5MB. Free memory was 121.9MB in the beginning and 121.2MB in the end (delta: 712.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 183.66ms. Allocated memory is still 161.5MB. Free memory was 121.2MB in the beginning and 110.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 12207.56ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 110.8MB in the beginning and 108.9MB in the end (delta: 1.9MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. * Witness Printer took 2.49ms. Allocated memory is still 195.0MB. Free memory is still 108.9MB. 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 12.1s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 8.6s. Construction of modules took 0.9s. Büchi inclusion checks took 2.4s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.1s 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, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 590 mSDsluCounter, 878 SdHoareTripleChecker+Invalid, 0.9s 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, 0.0s 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: 18ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.7s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-12-13 21:03:54,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-12-13 21:03:54,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-12-13 21:03:55,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-12-13 21:03:55,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-12-13 21:03:55,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-12-13 21:03:55,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 21:03:55,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-13 21:03:56,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-13 21:03:56,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 21:03:56,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 21:03:56,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4b95fbe-c343-4f28-a686-36e83c017405/bin/uautomizer-uyxdKDjOR8/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