./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.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_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/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_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/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_3eba9333-e952-488a-9cc0-5df9dc858e24/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 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- 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 18:13:22,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:13:22,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:13:22,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:13:22,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:13:22,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:13:22,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:13:22,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:13:22,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:13:22,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:13:22,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:13:22,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:13:22,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:13:22,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:13:22,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:13:22,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:13:22,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:13:22,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:13:22,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:13:22,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:13:22,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:13:22,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:13:22,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:13:22,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:13:22,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:13:22,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:13:22,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:13:22,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:13:22,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:13:22,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:13:22,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:13:22,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:13:22,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:13:22,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:13:22,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:13:22,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:13:22,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:13:22,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:13:22,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:13:22,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:13:22,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:13:22,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-12-13 18:13:22,441 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:13:22,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:13:22,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:13:22,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:13:22,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:13:22,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:13:22,442 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:13:22,443 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-12-13 18:13:22,443 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-12-13 18:13:22,443 INFO L138 SettingsManager]: * Use old map elimination=false [2022-12-13 18:13:22,443 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-12-13 18:13:22,443 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-12-13 18:13:22,443 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-12-13 18:13:22,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:13:22,443 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:13:22,444 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:13:22,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:13:22,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:13:22,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:13:22,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-12-13 18:13:22,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-12-13 18:13:22,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-12-13 18:13:22,445 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:13:22,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:13:22,445 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-12-13 18:13:22,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:13:22,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-12-13 18:13:22,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:13:22,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:13:22,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:13:22,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:13:22,447 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-12-13 18:13:22,447 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_3eba9333-e952-488a-9cc0-5df9dc858e24/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2022-12-13 18:13:22,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:13:22,625 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:13:22,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:13:22,628 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:13:22,629 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:13:22,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2022-12-13 18:13:25,177 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:13:25,344 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:13:25,345 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2022-12-13 18:13:25,349 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/data/bd0b7c622/54c002710551441aaaa8c0d3ef60e70c/FLAG1680e8f90 [2022-12-13 18:13:25,756 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/data/bd0b7c622/54c002710551441aaaa8c0d3ef60e70c [2022-12-13 18:13:25,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:13:25,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:13:25,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:13:25,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:13:25,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:13:25,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a110b68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25, skipping insertion in model container [2022-12-13 18:13:25,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:13:25,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:13:25,906 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_3eba9333-e952-488a-9cc0-5df9dc858e24/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2022-12-13 18:13:25,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:13:25,918 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:13:25,932 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_3eba9333-e952-488a-9cc0-5df9dc858e24/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c[946,959] [2022-12-13 18:13:25,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:13:25,945 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:13:25,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25 WrapperNode [2022-12-13 18:13:25,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:13:25,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:13:25,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:13:25,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:13:25,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,969 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-12-13 18:13:25,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:13:25,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:13:25,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:13:25,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:13:25,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,979 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,982 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:13:25,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:13:25,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:13:25,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:13:25,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (1/1) ... [2022-12-13 18:13:25,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:25,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,008 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-12-13 18:13:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:13:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:13:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-12-13 18:13:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-12-13 18:13:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-12-13 18:13:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-12-13 18:13:26,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:13:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:13:26,085 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:13:26,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:13:26,167 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:13:26,173 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:13:26,173 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 18:13:26,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:13:26 BoogieIcfgContainer [2022-12-13 18:13:26,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:13:26,176 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-12-13 18:13:26,176 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-12-13 18:13:26,180 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-12-13 18:13:26,181 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 18:13:26,181 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.12 06:13:25" (1/3) ... [2022-12-13 18:13:26,182 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d8e43cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 06:13:26, skipping insertion in model container [2022-12-13 18:13:26,182 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 18:13:26,182 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:13:25" (2/3) ... [2022-12-13 18:13:26,183 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1d8e43cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.12 06:13:26, skipping insertion in model container [2022-12-13 18:13:26,183 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-12-13 18:13:26,183 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:13:26" (3/3) ... [2022-12-13 18:13:26,184 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_4-2.c [2022-12-13 18:13:26,226 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-12-13 18:13:26,226 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-12-13 18:13:26,226 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-12-13 18:13:26,226 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-12-13 18:13:26,226 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-12-13 18:13:26,226 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-12-13 18:13:26,227 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-12-13 18:13:26,227 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-12-13 18:13:26,230 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 18:13:26,246 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 18:13:26,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:26,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:26,251 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 18:13:26,251 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:26,252 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-12-13 18:13:26,252 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 18:13:26,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 18:13:26,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:26,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:26,254 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-12-13 18:13:26,254 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:26,260 INFO L748 eck$LassoCheckResult]: Stem: 24#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 12#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17#$Ultimate##0true [2022-12-13 18:13:26,260 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 18:13:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-12-13 18:13:26,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:26,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229826534] [2022-12-13 18:13:26,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:26,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:26,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:13:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:26,369 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:13:26,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-12-13 18:13:26,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:26,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440769976] [2022-12-13 18:13:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:26,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:26,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:26,378 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:13:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:26,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:13:26,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:26,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-12-13 18:13:26,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:26,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301792435] [2022-12-13 18:13:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:26,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:26,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:13:26,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:26,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:13:26,582 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:13:26,583 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:13:26,583 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:13:26,583 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:13:26,583 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 18:13:26,583 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,583 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:13:26,583 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:13:26,584 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2022-12-13 18:13:26,584 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:13:26,584 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:13:26,596 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:26,604 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 18:13:26,607 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:26,609 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:26,611 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 18:13:26,613 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:26,615 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 18:13:26,618 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 18:13:26,664 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:13:26,664 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 18:13:26,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-12-13 18:13:26,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:26,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,686 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:26,686 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 18:13:26,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:26,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,692 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-12-13 18:13:26,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:26,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,707 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:26,707 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 18:13:26,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2022-12-13 18:13:26,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,713 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-12-13 18:13:26,715 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:26,715 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,727 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:26,727 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 18:13:26,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-12-13 18:13:26,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-12-13 18:13:26,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:26,734 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,746 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:26,746 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 18:13:26,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-12-13 18:13:26,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,751 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-12-13 18:13:26,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:26,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,765 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:26,765 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 18:13:26,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2022-12-13 18:13:26,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,770 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-12-13 18:13:26,773 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:26,773 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,785 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:26,785 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 18:13:26,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-12-13 18:13:26,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,789 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-12-13 18:13:26,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:26,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,803 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:26,803 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 18:13:26,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-12-13 18:13:26,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,808 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-12-13 18:13:26,810 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:26,810 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-12-13 18:13:26,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,826 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-12-13 18:13:26,829 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 18:13:26,829 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:26,889 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 18:13:26,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:26,892 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:13:26,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:13:26,893 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:13:26,893 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:13:26,893 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 18:13:26,893 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,893 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:13:26,893 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:13:26,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration1_Loop [2022-12-13 18:13:26,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:13:26,893 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:13:26,894 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 18:13:26,897 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 18:13:26,898 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 18:13:26,900 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 18:13:26,902 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 18:13:26,903 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 18:13:26,910 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 18:13:26,912 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 18:13:26,946 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:13:26,951 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 18:13:26,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-12-13 18:13:26,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 18:13:26,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:26,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:26,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:26,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:26,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:26,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:26,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:26,970 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:26,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-12-13 18:13:26,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,974 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-12-13 18:13:26,977 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 18:13:26,987 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:26,987 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:26,987 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:26,987 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:26,987 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:26,988 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:26,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:26,990 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:26,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-12-13 18:13:26,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:26,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:26,993 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:26,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-12-13 18:13:26,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 18:13:27,006 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:27,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:27,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:27,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:27,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:27,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:27,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:27,008 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:27,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2022-12-13 18:13:27,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:27,012 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:27,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-12-13 18:13:27,014 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 18:13:27,024 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:27,025 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:27,025 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:27,025 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:27,025 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:27,025 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:27,026 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:27,027 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:27,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2022-12-13 18:13:27,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:27,031 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:27,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-12-13 18:13:27,034 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 18:13:27,043 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:27,044 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:27,044 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:27,044 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:27,044 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:27,045 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:27,045 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:27,046 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:27,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-12-13 18:13:27,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:27,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:27,051 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:27,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-12-13 18:13:27,053 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 18:13:27,063 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:27,063 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:27,063 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:27,063 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:27,063 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:27,064 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:27,064 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:27,067 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 18:13:27,071 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 18:13:27,071 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 18:13:27,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:27,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:27,105 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:27,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-12-13 18:13:27,107 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 18:13:27,107 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 18:13:27,107 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 18:13:27,108 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-12-13 18:13:27,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-12-13 18:13:27,113 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 18:13:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:13:27,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:13:27,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:27,239 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 18:13:27,269 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 18:13:27,271 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 18:13:27,413 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 18:13:27,415 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 18:13:27,419 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 18:13:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-12-13 18:13:27,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-12-13 18:13:27,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:27,422 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-12-13 18:13:27,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:27,423 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-12-13 18:13:27,423 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:27,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-12-13 18:13:27,427 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 18:13:27,432 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-12-13 18:13:27,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-12-13 18:13:27,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-12-13 18:13:27,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-12-13 18:13:27,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:27,435 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-12-13 18:13:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-12-13 18:13:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-12-13 18:13:27,455 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 18:13:27,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-12-13 18:13:27,457 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-12-13 18:13:27,457 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-12-13 18:13:27,457 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-12-13 18:13:27,457 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-12-13 18:13:27,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 18:13:27,458 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:27,458 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:27,459 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:27,459 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:27,459 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 := 4; 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#$Ultimate##0 ~n := #in~n; 220#L10 assume ~n < 1;#res := 0; 207#fibo1FINAL assume true; 208#fibo1EXIT >#46#return; 209#L25-1 [2022-12-13 18:13:27,459 INFO L750 eck$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 18:13:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:27,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-12-13 18:13:27,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:27,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338426778] [2022-12-13 18:13:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:27,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2022-12-13 18:13:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:13:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,559 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 18:13:27,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:27,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338426778] [2022-12-13 18:13:27,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338426778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:13:27,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:13:27,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:13:27,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114931143] [2022-12-13 18:13:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:13:27,562 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 18:13:27,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:27,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-12-13 18:13:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:27,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155339747] [2022-12-13 18:13:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:27,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:13:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,616 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 18:13:27,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:27,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155339747] [2022-12-13 18:13:27,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155339747] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:13:27,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:13:27,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:13:27,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041324786] [2022-12-13 18:13:27,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:13:27,617 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 18:13:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:13:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:13:27,619 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 18:13:27,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:27,674 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-12-13 18:13:27,674 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-12-13 18:13:27,677 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 18:13:27,679 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-12-13 18:13:27,679 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-12-13 18:13:27,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-12-13 18:13:27,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-12-13 18:13:27,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:27,680 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-12-13 18:13:27,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-12-13 18:13:27,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-12-13 18:13:27,685 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 18:13:27,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-12-13 18:13:27,686 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-12-13 18:13:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:13:27,687 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-12-13 18:13:27,688 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-12-13 18:13:27,688 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-12-13 18:13:27,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-12-13 18:13:27,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:27,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:27,690 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:27,690 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:27,690 INFO L748 eck$LassoCheckResult]: Stem: 379#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 362#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 363#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 364#$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 18:13:27,691 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 18:13:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:27,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-12-13 18:13:27,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:27,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130287013] [2022-12-13 18:13:27,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:27,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:13:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,792 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 18:13:27,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:27,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130287013] [2022-12-13 18:13:27,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130287013] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:27,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219170028] [2022-12-13 18:13:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:27,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:27,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:27,795 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:27,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 18:13:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:27,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:13:27,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:27,856 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 18:13:27,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:27,924 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 18:13:27,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219170028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:27,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:27,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-12-13 18:13:27,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954126009] [2022-12-13 18:13:27,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:27,925 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 18:13:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-12-13 18:13:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:27,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179044438] [2022-12-13 18:13:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:27,931 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:13:27,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:27,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:13:28,071 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:13:28,072 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:13:28,072 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:13:28,072 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:13:28,072 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 18:13:28,072 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:28,072 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:13:28,072 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:13:28,072 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2022-12-13 18:13:28,072 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:13:28,072 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:13:28,073 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 18:13:28,074 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 18:13:28,075 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 18:13:28,077 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 18:13:28,078 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 18:13:28,082 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 18:13:28,084 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 18:13:28,086 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 18:13:28,117 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:13:28,117 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 18:13:28,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:28,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:28,118 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:28,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-12-13 18:13:28,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:28,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:28,134 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:28,134 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 18:13:28,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-12-13 18:13:28,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:28,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:28,138 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:28,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-12-13 18:13:28,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:28,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:28,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:28,153 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 18:13:28,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2022-12-13 18:13:28,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:28,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:28,157 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:28,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-12-13 18:13:28,159 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:28,159 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:28,171 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:28,171 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 18:13:28,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-12-13 18:13:28,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:28,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:28,175 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:28,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-12-13 18:13:28,177 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:28,177 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:28,189 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:28,189 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 18:13:28,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-12-13 18:13:28,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:28,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:28,193 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:28,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-12-13 18:13:28,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:28,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:28,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:28,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:28,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:28,210 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:28,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-12-13 18:13:28,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 18:13:28,213 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:29,374 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 18:13:29,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-12-13 18:13:29,377 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:13:29,377 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:13:29,377 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:13:29,378 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:13:29,378 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 18:13:29,378 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:29,378 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:13:29,378 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:13:29,378 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration3_Loop [2022-12-13 18:13:29,378 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:13:29,378 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:13:29,379 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 18:13:29,381 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 18:13:29,382 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 18:13:29,384 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 18:13:29,389 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 18:13:29,390 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 18:13:29,391 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 18:13:29,392 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 18:13:29,423 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:13:29,423 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 18:13:29,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:29,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:29,424 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:29,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-12-13 18:13:29,427 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 18:13:29,436 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:29,437 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:29,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:29,437 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:29,437 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:29,438 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:29,438 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:29,439 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:29,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-12-13 18:13:29,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:29,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:29,442 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:29,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-12-13 18:13:29,444 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 18:13:29,454 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:29,454 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:29,455 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:29,455 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:29,455 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:29,455 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:29,455 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:29,457 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:29,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:29,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:29,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:29,460 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:29,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-12-13 18:13:29,462 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 18:13:29,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:29,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:29,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:29,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:29,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:29,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:29,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:29,474 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:29,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2022-12-13 18:13:29,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:29,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:29,477 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:29,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-12-13 18:13:29,479 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 18:13:29,490 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:29,490 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:29,490 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:29,490 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:29,490 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:29,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:29,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:29,494 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 18:13:29,498 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-12-13 18:13:29,498 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-12-13 18:13:29,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:29,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:29,499 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:29,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-12-13 18:13:29,501 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 18:13:29,501 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 18:13:29,501 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 18:13:29,501 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-12-13 18:13:29,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:29,504 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 18:13:29,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:29,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:13:29,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:29,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-12-13 18:13:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:29,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:13:29,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:29,695 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 18:13:29,695 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 18:13:29,695 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 18:13:29,976 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 18:13:29,977 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 18:13:29,977 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 18:13:29,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-12-13 18:13:29,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-12-13 18:13:29,978 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:29,978 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-12-13 18:13:29,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:29,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-12-13 18:13:29,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:29,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-12-13 18:13:29,985 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 18:13:29,987 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-12-13 18:13:29,987 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-12-13 18:13:29,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-12-13 18:13:29,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-12-13 18:13:29,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:29,990 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-12-13 18:13:29,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-12-13 18:13:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-12-13 18:13:29,998 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 18:13:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-12-13 18:13:29,999 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-12-13 18:13:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:13:30,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:13:30,000 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (3), 3 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 18:13:30,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:30,104 INFO L93 Difference]: Finished difference Result 183 states and 247 transitions. [2022-12-13 18:13:30,104 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 247 transitions. [2022-12-13 18:13:30,108 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 18:13:30,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 243 transitions. [2022-12-13 18:13:30,111 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2022-12-13 18:13:30,111 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2022-12-13 18:13:30,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 243 transitions. [2022-12-13 18:13:30,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:30,111 INFO L218 hiAutomatonCegarLoop]: Abstraction has 180 states and 243 transitions. [2022-12-13 18:13:30,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 243 transitions. [2022-12-13 18:13:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2022-12-13 18:13:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 111 states have internal predecessors, (129), 38 states have call successors, (40), 20 states have call predecessors, (40), 25 states have return successors, (56), 33 states have call predecessors, (56), 36 states have call successors, (56) [2022-12-13 18:13:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 225 transitions. [2022-12-13 18:13:30,124 INFO L240 hiAutomatonCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-12-13 18:13:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:13:30,125 INFO L428 stractBuchiCegarLoop]: Abstraction has 165 states and 225 transitions. [2022-12-13 18:13:30,125 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-12-13 18:13:30,125 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 225 transitions. [2022-12-13 18:13:30,127 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-12-13 18:13:30,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:30,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:30,128 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:30,128 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:30,129 INFO L748 eck$LassoCheckResult]: Stem: 1265#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1237#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 1238#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1268#$Ultimate##0 ~n := #in~n; 1260#L10 assume !(~n < 1); 1253#L12 assume !(1 == ~n); 1225#L15 call #t~ret4 := fibo2(~n - 1);< 1261#$Ultimate##0 ~n := #in~n; 1263#L20 assume !(~n < 1); 1264#L22 assume !(1 == ~n); 1239#L25 call #t~ret6 := fibo1(~n - 1);< 1240#$Ultimate##0 ~n := #in~n; 1298#L10 assume !(~n < 1); 1302#L12 assume !(1 == ~n); 1303#L15 call #t~ret4 := fibo2(~n - 1);< 1310#$Ultimate##0 ~n := #in~n; 1313#L20 assume ~n < 1;#res := 0; 1311#fibo2FINAL assume true; 1309#fibo2EXIT >#50#return; 1307#L15-1 call #t~ret5 := fibo2(~n - 2);< 1308#$Ultimate##0 ~n := #in~n; 1315#L20 assume ~n < 1;#res := 0; 1312#fibo2FINAL assume true; 1306#fibo2EXIT >#52#return; 1304#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1305#fibo1FINAL assume true; 1362#fibo1EXIT >#46#return; 1218#L25-1 call #t~ret7 := fibo1(~n - 2);< 1295#$Ultimate##0 ~n := #in~n; 1325#L10 assume ~n < 1;#res := 0; 1217#fibo1FINAL assume true; 1220#fibo1EXIT >#48#return; 1232#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1241#fibo2FINAL assume true; 1254#fibo2EXIT >#50#return; 1201#L15-1 call #t~ret5 := fibo2(~n - 2);< 1323#$Ultimate##0 [2022-12-13 18:13:30,129 INFO L750 eck$LassoCheckResult]: Loop: 1323#$Ultimate##0 ~n := #in~n; 1317#L20 assume !(~n < 1); 1200#L22 assume !(1 == ~n); 1205#L25 call #t~ret6 := fibo1(~n - 1);< 1226#$Ultimate##0 ~n := #in~n; 1234#L10 assume !(~n < 1); 1259#L12 assume !(1 == ~n); 1202#L15 call #t~ret4 := fibo2(~n - 1);< 1323#$Ultimate##0 [2022-12-13 18:13:30,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash 613030308, now seen corresponding path program 1 times [2022-12-13 18:13:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:30,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775388664] [2022-12-13 18:13:30,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:30,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:30,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:13:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:30,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:13:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:30,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 18:13:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 18:13:30,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:30,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775388664] [2022-12-13 18:13:30,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775388664] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:30,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609409531] [2022-12-13 18:13:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:30,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:30,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,258 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 18:13:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:30,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:13:30,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:13:30,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:13:30,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609409531] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:30,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:30,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 16 [2022-12-13 18:13:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145952261] [2022-12-13 18:13:30,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:30,625 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 18:13:30,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:30,626 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2022-12-13 18:13:30,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:30,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366283645] [2022-12-13 18:13:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:30,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:30,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:13:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:30,632 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:13:30,705 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:13:30,705 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:13:30,705 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:13:30,705 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:13:30,705 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 18:13:30,705 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,705 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:13:30,705 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:13:30,705 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2022-12-13 18:13:30,705 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:13:30,705 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:13:30,706 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 18:13:30,708 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 18:13:30,709 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 18:13:30,711 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 18:13:30,712 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 18:13:30,713 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 18:13:30,715 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 18:13:30,720 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 18:13:30,751 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:13:30,752 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 18:13:30,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,753 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-12-13 18:13:30,755 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:30,755 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:30,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:30,766 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 18:13:30,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-12-13 18:13:30,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,770 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-12-13 18:13:30,772 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:30,772 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:30,783 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:30,783 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 18:13:30,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:30,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,787 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-12-13 18:13:30,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:30,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:30,799 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:30,800 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 18:13:30,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:30,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,803 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-12-13 18:13:30,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:30,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:30,816 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:30,816 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 18:13:30,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-12-13 18:13:30,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,819 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-12-13 18:13:30,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:30,822 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:30,833 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:30,833 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 18:13:30,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2022-12-13 18:13:30,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,836 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-12-13 18:13:30,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:30,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:30,850 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:30,850 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 18:13:30,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:30,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,853 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-12-13 18:13:30,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:30,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:30,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:30,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,869 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-12-13 18:13:30,871 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 18:13:30,871 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:30,933 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 18:13:30,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-12-13 18:13:30,936 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:13:30,936 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:13:30,936 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:13:30,936 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:13:30,936 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 18:13:30,936 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,936 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:13:30,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:13:30,936 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration4_Loop [2022-12-13 18:13:30,937 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:13:30,937 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:13:30,937 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 18:13:30,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:30,940 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 18:13:30,941 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:30,942 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 18:13:30,943 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:30,944 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 18:13:30,945 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 18:13:30,968 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:13:30,968 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 18:13:30,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,969 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-12-13 18:13:30,971 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 18:13:30,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:30,981 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:30,981 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:30,981 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:30,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:30,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:30,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:30,984 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:30,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:30,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:30,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:30,987 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:30,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-12-13 18:13:30,989 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 18:13:30,999 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:30,999 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:30,999 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:30,999 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:30,999 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:31,000 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:31,000 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:31,001 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:31,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2022-12-13 18:13:31,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:31,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:31,004 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:31,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-12-13 18:13:31,006 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 18:13:31,016 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:31,016 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:31,016 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:31,016 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:31,016 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:31,017 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:31,017 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:31,018 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:31,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2022-12-13 18:13:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:31,021 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:31,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-12-13 18:13:31,024 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 18:13:31,033 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:31,033 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:31,033 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:31,034 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:31,034 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:31,034 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:31,034 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:31,035 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:31,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:31,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:31,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:31,039 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:31,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-12-13 18:13:31,042 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 18:13:31,051 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:31,052 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:31,052 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:31,052 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:31,052 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:31,052 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:31,052 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:31,054 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:31,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:31,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:31,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:31,057 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:31,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-12-13 18:13:31,059 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 18:13:31,069 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:31,069 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:31,069 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:31,070 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:31,070 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:31,070 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:31,070 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:31,071 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:31,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2022-12-13 18:13:31,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:31,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:31,074 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:31,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-12-13 18:13:31,077 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 18:13:31,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:31,087 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:31,087 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:31,087 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:31,087 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:31,087 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:31,088 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:31,089 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:31,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:31,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:31,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:31,092 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:31,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-12-13 18:13:31,094 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-12-13 18:13:31,104 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:31,104 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:31,104 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:31,104 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:31,105 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:31,105 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:31,105 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:31,108 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 18:13:31,109 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 18:13:31,110 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 18:13:31,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:31,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:31,111 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:31,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-12-13 18:13:31,112 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 18:13:31,112 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 18:13:31,112 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 18:13:31,113 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-12-13 18:13:31,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:31,115 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 18:13:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:31,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:13:31,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:31,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2022-12-13 18:13:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:31,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:13:31,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:31,420 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 18:13:31,420 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 18:13:31,421 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:13:31,542 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2022-12-13 18:13:31,542 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 18:13:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:13:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-12-13 18:13:31,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-12-13 18:13:31,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:31,543 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 18:13:31,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:31,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:13:31,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:31,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:13:31,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:31,836 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 18:13:31,837 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 18:13:31,837 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:13:31,938 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 671 states and 941 transitions. Complement of second has 26 states. [2022-12-13 18:13:31,938 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 18:13:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:13:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2022-12-13 18:13:31,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 36 letters. Loop has 8 letters. [2022-12-13 18:13:31,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:31,939 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 18:13:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:31,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:13:31,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:32,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:13:32,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:13:32,224 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 18:13:32,224 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65 Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:13:32,343 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 225 transitions. cyclomatic complexity: 65. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 553 states and 762 transitions. Complement of second has 25 states. [2022-12-13 18:13:32,343 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 18:13:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-13 18:13:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2022-12-13 18:13:32,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 8 letters. [2022-12-13 18:13:32,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:32,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2022-12-13 18:13:32,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:32,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 36 letters. Loop has 16 letters. [2022-12-13 18:13:32,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:32,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 553 states and 762 transitions. [2022-12-13 18:13:32,353 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2022-12-13 18:13:32,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 553 states to 445 states and 639 transitions. [2022-12-13 18:13:32,360 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 195 [2022-12-13 18:13:32,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 226 [2022-12-13 18:13:32,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 445 states and 639 transitions. [2022-12-13 18:13:32,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:32,361 INFO L218 hiAutomatonCegarLoop]: Abstraction has 445 states and 639 transitions. [2022-12-13 18:13:32,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states and 639 transitions. [2022-12-13 18:13:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 370. [2022-12-13 18:13:32,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 246 states have (on average 1.2845528455284554) internal successors, (316), 269 states have internal predecessors, (316), 71 states have call successors, (74), 55 states have call predecessors, (74), 53 states have return successors, (117), 45 states have call predecessors, (117), 69 states have call successors, (117) [2022-12-13 18:13:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 507 transitions. [2022-12-13 18:13:32,385 INFO L240 hiAutomatonCegarLoop]: Abstraction has 370 states and 507 transitions. [2022-12-13 18:13:32,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:32,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:13:32,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:13:32,386 INFO L87 Difference]: Start difference. First operand 370 states and 507 transitions. Second operand has 16 states, 14 states have (on average 3.142857142857143) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (12), 3 states have call predecessors, (12), 10 states have call successors, (12) [2022-12-13 18:13:32,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:32,599 INFO L93 Difference]: Finished difference Result 449 states and 635 transitions. [2022-12-13 18:13:32,599 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 449 states and 635 transitions. [2022-12-13 18:13:32,605 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 18:13:32,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 449 states to 410 states and 591 transitions. [2022-12-13 18:13:32,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 228 [2022-12-13 18:13:32,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 229 [2022-12-13 18:13:32,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 410 states and 591 transitions. [2022-12-13 18:13:32,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:32,611 INFO L218 hiAutomatonCegarLoop]: Abstraction has 410 states and 591 transitions. [2022-12-13 18:13:32,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states and 591 transitions. [2022-12-13 18:13:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 359. [2022-12-13 18:13:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 233 states have (on average 1.240343347639485) internal successors, (289), 261 states have internal predecessors, (289), 74 states have call successors, (77), 50 states have call predecessors, (77), 52 states have return successors, (130), 47 states have call predecessors, (130), 72 states have call successors, (130) [2022-12-13 18:13:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 496 transitions. [2022-12-13 18:13:32,630 INFO L240 hiAutomatonCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-12-13 18:13:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 18:13:32,631 INFO L428 stractBuchiCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-12-13 18:13:32,631 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-12-13 18:13:32,631 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 359 states and 496 transitions. [2022-12-13 18:13:32,633 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 18:13:32,633 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:32,633 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:32,634 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:32,634 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-12-13 18:13:32,634 INFO L748 eck$LassoCheckResult]: Stem: 4982#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 4942#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 4943#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4985#$Ultimate##0 ~n := #in~n; 5104#L10 assume !(~n < 1); 5103#L12 assume !(1 == ~n); 5040#L15 call #t~ret4 := fibo2(~n - 1);< 5102#$Ultimate##0 ~n := #in~n; 5101#L20 assume !(~n < 1); 5100#L22 assume !(1 == ~n); 4954#L25 call #t~ret6 := fibo1(~n - 1);< 5037#$Ultimate##0 ~n := #in~n; 5039#L10 assume !(~n < 1); 5122#L12 assume !(1 == ~n); 5097#L15 call #t~ret4 := fibo2(~n - 1);< 5146#$Ultimate##0 ~n := #in~n; 5152#L20 assume !(~n < 1); 5149#L22 assume 1 == ~n;#res := 1; 5148#fibo2FINAL assume true; 5145#fibo2EXIT >#50#return; 4951#L15-1 call #t~ret5 := fibo2(~n - 2);< 4955#$Ultimate##0 ~n := #in~n; 5128#L20 assume ~n < 1;#res := 0; 5125#fibo2FINAL assume true; 5123#fibo2EXIT >#52#return; 5121#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5119#fibo1FINAL assume true; 5117#fibo1EXIT >#46#return; 5090#L25-1 call #t~ret7 := fibo1(~n - 2);< 5113#$Ultimate##0 ~n := #in~n; 5244#L10 assume ~n < 1;#res := 0; 5196#fibo1FINAL assume true; 5153#fibo1EXIT >#48#return; 5151#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5150#fibo2FINAL assume true; 5147#fibo2EXIT >#50#return; 4910#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 [2022-12-13 18:13:32,634 INFO L750 eck$LassoCheckResult]: Loop: 5106#$Ultimate##0 ~n := #in~n; 4921#L20 assume !(~n < 1); 4908#L22 assume !(1 == ~n); 4914#L25 call #t~ret6 := fibo1(~n - 1);< 5130#$Ultimate##0 ~n := #in~n; 5126#L10 assume !(~n < 1); 5127#L12 assume !(1 == ~n); 4909#L15 call #t~ret4 := fibo2(~n - 1);< 4920#$Ultimate##0 ~n := #in~n; 4921#L20 assume !(~n < 1); 4908#L22 assume !(1 == ~n); 4914#L25 call #t~ret6 := fibo1(~n - 1);< 5130#$Ultimate##0 ~n := #in~n; 5126#L10 assume !(~n < 1); 5127#L12 assume !(1 == ~n); 4909#L15 call #t~ret4 := fibo2(~n - 1);< 4920#$Ultimate##0 ~n := #in~n; 4922#L20 assume !(~n < 1); 5175#L22 assume 1 == ~n;#res := 1; 5173#fibo2FINAL assume true; 5172#fibo2EXIT >#50#return; 4911#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5200#fibo2FINAL assume true; 5169#fibo2EXIT >#52#return; 5139#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5162#fibo1FINAL assume true; 5160#fibo1EXIT >#46#return; 5157#L25-1 call #t~ret7 := fibo1(~n - 2);< 5161#$Ultimate##0 ~n := #in~n; 5189#L10 assume !(~n < 1); 5184#L12 assume !(1 == ~n); 5138#L15 call #t~ret4 := fibo2(~n - 1);< 5166#$Ultimate##0 ~n := #in~n; 5165#L20 assume !(~n < 1); 5163#L22 assume !(1 == ~n); 5156#L25 call #t~ret6 := fibo1(~n - 1);< 5161#$Ultimate##0 ~n := #in~n; 5189#L10 assume !(~n < 1); 5184#L12 assume !(1 == ~n); 5138#L15 call #t~ret4 := fibo2(~n - 1);< 5166#$Ultimate##0 ~n := #in~n; 5165#L20 assume !(~n < 1); 5163#L22 assume 1 == ~n;#res := 1; 5164#fibo2FINAL assume true; 5170#fibo2EXIT >#50#return; 4911#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5200#fibo2FINAL assume true; 5169#fibo2EXIT >#52#return; 5139#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5162#fibo1FINAL assume true; 5160#fibo1EXIT >#46#return; 5157#L25-1 call #t~ret7 := fibo1(~n - 2);< 5161#$Ultimate##0 ~n := #in~n; 5189#L10 assume ~n < 1;#res := 0; 5190#fibo1FINAL assume true; 5155#fibo1EXIT >#48#return; 5159#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5201#fibo2FINAL assume true; 5136#fibo2EXIT >#50#return; 4911#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5200#fibo2FINAL assume true; 5169#fibo2EXIT >#52#return; 5139#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5162#fibo1FINAL assume true; 5160#fibo1EXIT >#48#return; 5159#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5201#fibo2FINAL assume true; 5136#fibo2EXIT >#50#return; 4911#L15-1 call #t~ret5 := fibo2(~n - 2);< 5106#$Ultimate##0 [2022-12-13 18:13:32,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:32,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1718474001, now seen corresponding path program 1 times [2022-12-13 18:13:32,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:32,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530097840] [2022-12-13 18:13:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:32,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:13:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:32,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:32,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:13:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 18:13:32,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:32,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530097840] [2022-12-13 18:13:32,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530097840] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:32,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662748629] [2022-12-13 18:13:32,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:32,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:32,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:32,768 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:32,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-13 18:13:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:32,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:13:32,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 18:13:32,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:32,950 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 18:13:32,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662748629] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:32,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:32,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 16 [2022-12-13 18:13:32,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873828360] [2022-12-13 18:13:32,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:32,952 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 18:13:32,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash 688787707, now seen corresponding path program 1 times [2022-12-13 18:13:32,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:32,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590645808] [2022-12-13 18:13:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:13:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:13:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:33,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:33,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:13:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:13:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 34 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 18:13:33,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:33,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590645808] [2022-12-13 18:13:33,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590645808] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:33,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209049593] [2022-12-13 18:13:33,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:33,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:33,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:33,154 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:33,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-13 18:13:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:13:33,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 18:13:33,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:33,536 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 18:13:33,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209049593] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:33,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:33,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-12-13 18:13:33,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083379886] [2022-12-13 18:13:33,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:33,536 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 18:13:33,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:33,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:13:33,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:13:33,537 INFO L87 Difference]: Start difference. First operand 359 states and 496 transitions. cyclomatic complexity: 144 Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 8 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2022-12-13 18:13:33,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:33,660 INFO L93 Difference]: Finished difference Result 387 states and 546 transitions. [2022-12-13 18:13:33,660 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 387 states and 546 transitions. [2022-12-13 18:13:33,663 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 18:13:33,665 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 387 states to 387 states and 546 transitions. [2022-12-13 18:13:33,666 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 209 [2022-12-13 18:13:33,666 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 209 [2022-12-13 18:13:33,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 387 states and 546 transitions. [2022-12-13 18:13:33,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:33,666 INFO L218 hiAutomatonCegarLoop]: Abstraction has 387 states and 546 transitions. [2022-12-13 18:13:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states and 546 transitions. [2022-12-13 18:13:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 369. [2022-12-13 18:13:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 238 states have (on average 1.2352941176470589) internal successors, (294), 269 states have internal predecessors, (294), 75 states have call successors, (78), 50 states have call predecessors, (78), 56 states have return successors, (136), 49 states have call predecessors, (136), 73 states have call successors, (136) [2022-12-13 18:13:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2022-12-13 18:13:33,675 INFO L240 hiAutomatonCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-12-13 18:13:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:13:33,676 INFO L428 stractBuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2022-12-13 18:13:33,676 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-12-13 18:13:33,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2022-12-13 18:13:33,678 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 18:13:33,678 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:33,678 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:33,679 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 18:13:33,679 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1] [2022-12-13 18:13:33,679 INFO L748 eck$LassoCheckResult]: Stem: 6684#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6644#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 6645#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6686#$Ultimate##0 ~n := #in~n; 6742#L10 assume !(~n < 1); 6741#L12 assume !(1 == ~n); 6730#L15 call #t~ret4 := fibo2(~n - 1);< 6740#$Ultimate##0 ~n := #in~n; 6739#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6654#L25 call #t~ret6 := fibo1(~n - 1);< 6731#$Ultimate##0 ~n := #in~n; 6721#L10 assume !(~n < 1); 6722#L12 assume !(1 == ~n); 6707#L15 call #t~ret4 := fibo2(~n - 1);< 6708#$Ultimate##0 ~n := #in~n; 6728#L20 assume !(~n < 1); 6729#L22 assume !(1 == ~n); 6656#L25 call #t~ret6 := fibo1(~n - 1);< 6731#$Ultimate##0 ~n := #in~n; 6737#L10 assume !(~n < 1); 6835#L12 assume 1 == ~n;#res := 1; 6832#fibo1FINAL assume true; 6830#fibo1EXIT >#46#return; 6803#L25-1 call #t~ret7 := fibo1(~n - 2);< 6807#$Ultimate##0 ~n := #in~n; 6904#L10 assume ~n < 1;#res := 0; 6905#fibo1FINAL assume true; 6952#fibo1EXIT >#48#return; 6900#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6941#fibo2FINAL assume true; 6848#fibo2EXIT >#50#return; 6849#L15-1 [2022-12-13 18:13:33,679 INFO L750 eck$LassoCheckResult]: Loop: 6849#L15-1 call #t~ret5 := fibo2(~n - 2);< 6825#$Ultimate##0 ~n := #in~n; 6881#L20 assume !(~n < 1); 6880#L22 assume !(1 == ~n); 6637#L25 call #t~ret6 := fibo1(~n - 1);< 6828#$Ultimate##0 ~n := #in~n; 6826#L10 assume !(~n < 1); 6827#L12 assume !(1 == ~n); 6856#L15 call #t~ret4 := fibo2(~n - 1);< 6866#$Ultimate##0 ~n := #in~n; 6881#L20 assume !(~n < 1); 6880#L22 assume !(1 == ~n); 6637#L25 call #t~ret6 := fibo1(~n - 1);< 6828#$Ultimate##0 ~n := #in~n; 6826#L10 assume !(~n < 1); 6827#L12 assume !(1 == ~n); 6856#L15 call #t~ret4 := fibo2(~n - 1);< 6866#$Ultimate##0 ~n := #in~n; 6882#L20 assume !(~n < 1); 6915#L22 assume 1 == ~n;#res := 1; 6914#fibo2FINAL assume true; 6910#fibo2EXIT >#50#return; 6849#L15-1 call #t~ret5 := fibo2(~n - 2);< 6825#$Ultimate##0 ~n := #in~n; 6883#L20 assume ~n < 1;#res := 0; 6890#fibo2FINAL assume true; 6907#fibo2EXIT >#52#return; 6850#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6934#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6862#L25-1 call #t~ret7 := fibo1(~n - 2);< 6875#$Ultimate##0 ~n := #in~n; 6924#L10 assume !(~n < 1); 6918#L12 assume !(1 == ~n); 6858#L15 call #t~ret4 := fibo2(~n - 1);< 6865#$Ultimate##0 ~n := #in~n; 6896#L20 assume !(~n < 1); 6893#L22 assume !(1 == ~n); 6863#L25 call #t~ret6 := fibo1(~n - 1);< 6875#$Ultimate##0 ~n := #in~n; 6924#L10 assume !(~n < 1); 6918#L12 assume !(1 == ~n); 6858#L15 call #t~ret4 := fibo2(~n - 1);< 6865#$Ultimate##0 ~n := #in~n; 6896#L20 assume !(~n < 1); 6893#L22 assume 1 == ~n;#res := 1; 6894#fibo2FINAL assume true; 6909#fibo2EXIT >#50#return; 6849#L15-1 call #t~ret5 := fibo2(~n - 2);< 6825#$Ultimate##0 ~n := #in~n; 6883#L20 assume ~n < 1;#res := 0; 6890#fibo2FINAL assume true; 6907#fibo2EXIT >#52#return; 6850#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6934#fibo1FINAL assume true; 6868#fibo1EXIT >#46#return; 6862#L25-1 call #t~ret7 := fibo1(~n - 2);< 6875#$Ultimate##0 ~n := #in~n; 6924#L10 assume !(~n < 1); 6918#L12 assume 1 == ~n;#res := 1; 6897#fibo1FINAL assume true; 6879#fibo1EXIT >#48#return; 6867#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6864#fibo2FINAL assume true; 6854#fibo2EXIT >#50#return; 6849#L15-1 call #t~ret5 := fibo2(~n - 2);< 6825#$Ultimate##0 ~n := #in~n; 6883#L20 assume ~n < 1;#res := 0; 6890#fibo2FINAL assume true; 6907#fibo2EXIT >#52#return; 6850#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6934#fibo1FINAL assume true; 6868#fibo1EXIT >#48#return; 6867#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6864#fibo2FINAL assume true; 6854#fibo2EXIT >#50#return; 6849#L15-1 [2022-12-13 18:13:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-12-13 18:13:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:33,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925336246] [2022-12-13 18:13:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:33,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:13:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 18:13:33,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:33,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925336246] [2022-12-13 18:13:33,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925336246] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:33,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478049786] [2022-12-13 18:13:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:33,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:33,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:33,775 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:33,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-12-13 18:13:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:33,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:13:33,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:33,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:13:33,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:34,011 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:13:34,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478049786] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:34,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:34,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2022-12-13 18:13:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50285898] [2022-12-13 18:13:34,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:34,012 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 18:13:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:34,013 INFO L85 PathProgramCache]: Analyzing trace with hash 651349219, now seen corresponding path program 1 times [2022-12-13 18:13:34,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:34,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18927476] [2022-12-13 18:13:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:34,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:13:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:34,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:13:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:13:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:13:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 38 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 18:13:34,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:34,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18927476] [2022-12-13 18:13:34,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18927476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:34,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722537006] [2022-12-13 18:13:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:34,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:34,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:34,208 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:34,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-12-13 18:13:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:13:34,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 18:13:34,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:34,594 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 44 proven. 47 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 18:13:34,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722537006] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:34,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:34,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-12-13 18:13:34,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237601898] [2022-12-13 18:13:34,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:34,595 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 18:13:34,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:34,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 18:13:34,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:13:34,596 INFO L87 Difference]: Start difference. First operand 369 states and 508 transitions. cyclomatic complexity: 146 Second operand has 18 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2022-12-13 18:13:34,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:34,756 INFO L93 Difference]: Finished difference Result 400 states and 493 transitions. [2022-12-13 18:13:34,756 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 493 transitions. [2022-12-13 18:13:34,760 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-12-13 18:13:34,761 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 235 states and 273 transitions. [2022-12-13 18:13:34,762 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 113 [2022-12-13 18:13:34,762 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 113 [2022-12-13 18:13:34,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 273 transitions. [2022-12-13 18:13:34,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:34,762 INFO L218 hiAutomatonCegarLoop]: Abstraction has 235 states and 273 transitions. [2022-12-13 18:13:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states and 273 transitions. [2022-12-13 18:13:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 218. [2022-12-13 18:13:34,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 143 states have (on average 1.167832167832168) internal successors, (167), 159 states have internal predecessors, (167), 47 states have call successors, (48), 34 states have call predecessors, (48), 28 states have return successors, (39), 24 states have call predecessors, (39), 30 states have call successors, (39) [2022-12-13 18:13:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 254 transitions. [2022-12-13 18:13:34,766 INFO L240 hiAutomatonCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-12-13 18:13:34,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:13:34,766 INFO L428 stractBuchiCegarLoop]: Abstraction has 218 states and 254 transitions. [2022-12-13 18:13:34,766 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-12-13 18:13:34,766 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 218 states and 254 transitions. [2022-12-13 18:13:34,767 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2022-12-13 18:13:34,767 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:34,767 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:34,768 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:34,768 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:34,768 INFO L748 eck$LassoCheckResult]: Stem: 8359#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8336#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8337#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8365#$Ultimate##0 ~n := #in~n; 8395#L10 assume !(~n < 1); 8390#L12 assume !(1 == ~n); 8346#L15 call #t~ret4 := fibo2(~n - 1);< 8385#$Ultimate##0 ~n := #in~n; 8382#L20 assume !(~n < 1); 8380#L22 assume !(1 == ~n); 8341#L25 call #t~ret6 := fibo1(~n - 1);< 8375#$Ultimate##0 ~n := #in~n; 8404#L10 assume !(~n < 1); 8400#L12 assume !(1 == ~n); 8393#L15 call #t~ret4 := fibo2(~n - 1);< 8394#$Ultimate##0 ~n := #in~n; 8405#L20 assume !(~n < 1); 8402#L22 assume 1 == ~n;#res := 1; 8397#fibo2FINAL assume true; 8392#fibo2EXIT >#50#return; 8388#L15-1 call #t~ret5 := fibo2(~n - 2);< 8389#$Ultimate##0 ~n := #in~n; 8396#L20 assume ~n < 1;#res := 0; 8391#fibo2FINAL assume true; 8387#fibo2EXIT >#52#return; 8386#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8384#fibo1FINAL assume true; 8373#fibo1EXIT >#46#return; 8367#L25-1 call #t~ret7 := fibo1(~n - 2);< 8369#$Ultimate##0 ~n := #in~n; 8449#L10 assume !(~n < 1); 8445#L12 assume 1 == ~n;#res := 1; 8412#fibo1FINAL assume true; 8366#fibo1EXIT >#48#return; 8345#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8347#fibo2FINAL assume true; 8350#fibo2EXIT >#50#return; 8358#L15-1 [2022-12-13 18:13:34,768 INFO L750 eck$LassoCheckResult]: Loop: 8358#L15-1 call #t~ret5 := fibo2(~n - 2);< 8427#$Ultimate##0 ~n := #in~n; 8423#L20 assume !(~n < 1); 8420#L22 assume !(1 == ~n); 8413#L25 call #t~ret6 := fibo1(~n - 1);< 8417#$Ultimate##0 ~n := #in~n; 8437#L10 assume !(~n < 1); 8438#L12 assume 1 == ~n;#res := 1; 8443#fibo1FINAL assume true; 8442#fibo1EXIT >#46#return; 8430#L25-1 call #t~ret7 := fibo1(~n - 2);< 8441#$Ultimate##0 ~n := #in~n; 8444#L10 assume !(~n < 1); 8434#L12 assume !(1 == ~n); 8414#L15 call #t~ret4 := fibo2(~n - 1);< 8425#$Ultimate##0 ~n := #in~n; 8426#L20 assume !(~n < 1); 8486#L22 assume 1 == ~n;#res := 1; 8484#fibo2FINAL assume true; 8472#fibo2EXIT >#50#return; 8358#L15-1 [2022-12-13 18:13:34,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:34,768 INFO L85 PathProgramCache]: Analyzing trace with hash -979062994, now seen corresponding path program 1 times [2022-12-13 18:13:34,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:34,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538276077] [2022-12-13 18:13:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:34,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:34,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:13:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:34,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:13:34,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:34,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1176615322, now seen corresponding path program 1 times [2022-12-13 18:13:34,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:34,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825508911] [2022-12-13 18:13:34,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:34,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:13:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:13:34,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:13:34,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:34,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825508911] [2022-12-13 18:13:34,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825508911] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:34,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369734094] [2022-12-13 18:13:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:34,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:34,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:34,813 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:34,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-12-13 18:13:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:34,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:13:34,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:13:34,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:13:34,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369734094] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:34,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:34,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-12-13 18:13:34,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076803322] [2022-12-13 18:13:34,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:34,903 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 18:13:34,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:34,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:13:34,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:13:34,904 INFO L87 Difference]: Start difference. First operand 218 states and 254 transitions. cyclomatic complexity: 42 Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 18:13:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:34,952 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2022-12-13 18:13:34,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 193 states and 213 transitions. [2022-12-13 18:13:34,953 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-12-13 18:13:34,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 193 states to 160 states and 179 transitions. [2022-12-13 18:13:34,954 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2022-12-13 18:13:34,954 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 87 [2022-12-13 18:13:34,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 179 transitions. [2022-12-13 18:13:34,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:34,954 INFO L218 hiAutomatonCegarLoop]: Abstraction has 160 states and 179 transitions. [2022-12-13 18:13:34,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 179 transitions. [2022-12-13 18:13:34,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-12-13 18:13:34,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 114 states have internal predecessors, (118), 33 states have call successors, (34), 26 states have call predecessors, (34), 19 states have return successors, (25), 17 states have call predecessors, (25), 24 states have call successors, (25) [2022-12-13 18:13:34,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2022-12-13 18:13:34,957 INFO L240 hiAutomatonCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-12-13 18:13:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:13:34,958 INFO L428 stractBuchiCegarLoop]: Abstraction has 158 states and 177 transitions. [2022-12-13 18:13:34,958 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-12-13 18:13:34,958 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 158 states and 177 transitions. [2022-12-13 18:13:34,959 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2022-12-13 18:13:34,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:34,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:34,960 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:34,960 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:34,960 INFO L748 eck$LassoCheckResult]: Stem: 8912#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 8892#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 8893#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8915#$Ultimate##0 ~n := #in~n; 8965#L10 assume !(~n < 1); 8964#L12 assume !(1 == ~n); 8895#L15 call #t~ret4 := fibo2(~n - 1);< 8952#$Ultimate##0 ~n := #in~n; 8946#L20 assume !(~n < 1); 8936#L22 assume !(1 == ~n); 8888#L25 call #t~ret6 := fibo1(~n - 1);< 8887#$Ultimate##0 ~n := #in~n; 8890#L10 assume !(~n < 1); 8900#L12 assume !(1 == ~n); 8854#L15 call #t~ret4 := fibo2(~n - 1);< 8860#$Ultimate##0 ~n := #in~n; 8861#L20 assume !(~n < 1); 8853#L22 assume 1 == ~n;#res := 1; 8855#fibo2FINAL assume true; 8908#fibo2EXIT >#50#return; 8898#L15-1 call #t~ret5 := fibo2(~n - 2);< 8899#$Ultimate##0 ~n := #in~n; 8993#L20 assume ~n < 1;#res := 0; 8991#fibo2FINAL assume true; 8989#fibo2EXIT >#52#return; 8987#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 8985#fibo1FINAL assume true; 8934#fibo1EXIT >#46#return; 8876#L25-1 call #t~ret7 := fibo1(~n - 2);< 8933#$Ultimate##0 ~n := #in~n; 8979#L10 assume !(~n < 1); 8977#L12 assume 1 == ~n;#res := 1; 8976#fibo1FINAL assume true; 8932#fibo1EXIT >#48#return; 8894#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8896#fibo2FINAL assume true; 9009#fibo2EXIT >#50#return; 8867#L15-1 call #t~ret5 := fibo2(~n - 2);< 8982#$Ultimate##0 [2022-12-13 18:13:34,960 INFO L750 eck$LassoCheckResult]: Loop: 8982#$Ultimate##0 ~n := #in~n; 8980#L20 assume !(~n < 1); 8978#L22 assume !(1 == ~n); 8877#L25 call #t~ret6 := fibo1(~n - 1);< 8975#$Ultimate##0 ~n := #in~n; 8994#L10 assume !(~n < 1); 8990#L12 assume !(1 == ~n); 8866#L15 call #t~ret4 := fibo2(~n - 1);< 8906#$Ultimate##0 ~n := #in~n; 8981#L20 assume !(~n < 1); 9010#L22 assume 1 == ~n;#res := 1; 9008#fibo2FINAL assume true; 9000#fibo2EXIT >#50#return; 8868#L15-1 call #t~ret5 := fibo2(~n - 2);< 8982#$Ultimate##0 [2022-12-13 18:13:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash -286181691, now seen corresponding path program 2 times [2022-12-13 18:13:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:34,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370485852] [2022-12-13 18:13:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:34,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:34,964 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:13:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:34,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:13:34,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:34,970 INFO L85 PathProgramCache]: Analyzing trace with hash -767060718, now seen corresponding path program 1 times [2022-12-13 18:13:34,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:34,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604398067] [2022-12-13 18:13:34,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:34,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:34,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 18:13:34,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 18:13:34,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 18:13:34,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:34,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1541383382, now seen corresponding path program 3 times [2022-12-13 18:13:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:34,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393752593] [2022-12-13 18:13:34,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:34,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 18:13:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-12-13 18:13:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 18:13:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 18:13:35,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393752593] [2022-12-13 18:13:35,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393752593] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:35,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37312141] [2022-12-13 18:13:35,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 18:13:35,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:35,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,063 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-12-13 18:13:35,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 18:13:35,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:13:35,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:13:35,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 18:13:35,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:35,202 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 34 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 18:13:35,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37312141] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:35,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:35,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 13 [2022-12-13 18:13:35,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919461655] [2022-12-13 18:13:35,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:35,277 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:13:35,277 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:13:35,277 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:13:35,278 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:13:35,278 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-12-13 18:13:35,278 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,278 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:13:35,278 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:13:35,278 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2022-12-13 18:13:35,278 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:13:35,278 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:13:35,279 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 18:13:35,280 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 18:13:35,281 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 18:13:35,282 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:35,284 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 18:13:35,285 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:35,286 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 18:13:35,289 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 18:13:35,308 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:13:35,308 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-12-13 18:13:35,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,309 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-12-13 18:13:35,311 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:35,311 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:35,322 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:35,322 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 18:13:35,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:35,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,325 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-12-13 18:13:35,327 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:35,327 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:35,339 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:35,339 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-12-13 18:13:35,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2022-12-13 18:13:35,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,342 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-12-13 18:13:35,344 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:35,344 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:35,355 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:35,355 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 18:13:35,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:35,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,358 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2022-12-13 18:13:35,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:35,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:35,372 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:35,372 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 18:13:35,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:35,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,376 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-12-13 18:13:35,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:35,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:35,390 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:35,390 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 18:13:35,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:35,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,393 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-12-13 18:13:35,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:35,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:35,406 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-12-13 18:13:35,407 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 18:13:35,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:35,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,410 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-12-13 18:13:35,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-12-13 18:13:35,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:35,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2022-12-13 18:13:35,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,427 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-12-13 18:13:35,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-12-13 18:13:35,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-12-13 18:13:35,440 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-12-13 18:13:35,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2022-12-13 18:13:35,443 INFO L210 LassoAnalysis]: Preferences: [2022-12-13 18:13:35,443 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-12-13 18:13:35,443 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-12-13 18:13:35,443 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-12-13 18:13:35,443 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-12-13 18:13:35,443 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,443 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-12-13 18:13:35,443 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-12-13 18:13:35,443 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_4-2.c_Iteration8_Loop [2022-12-13 18:13:35,443 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-12-13 18:13:35,443 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-12-13 18:13:35,444 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 18:13:35,446 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:35,447 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 18:13:35,448 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 18:13:35,449 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-12-13 18:13:35,450 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 18:13:35,453 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 18:13:35,454 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 18:13:35,471 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-12-13 18:13:35,471 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-12-13 18:13:35,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,472 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-12-13 18:13:35,474 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 18:13:35,484 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:35,484 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:35,484 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:35,484 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:35,484 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:35,484 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:35,484 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:35,485 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:35,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2022-12-13 18:13:35,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,488 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-12-13 18:13:35,491 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 18:13:35,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:35,501 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:35,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:35,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:35,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:35,502 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:35,502 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:35,503 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:35,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2022-12-13 18:13:35,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,506 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2022-12-13 18:13:35,508 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 18:13:35,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:35,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:35,518 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:35,518 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:35,518 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:35,519 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:35,519 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:35,520 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:35,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2022-12-13 18:13:35,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,524 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2022-12-13 18:13:35,526 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 18:13:35,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:35,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:35,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:35,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:35,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:35,536 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:35,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:35,538 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:35,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:35,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,541 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-12-13 18:13:35,543 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 18:13:35,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:35,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:35,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:35,553 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:35,553 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:35,553 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:35,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:35,555 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-12-13 18:13:35,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2022-12-13 18:13:35,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,558 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-12-13 18:13:35,560 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 18:13:35,570 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-12-13 18:13:35,570 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-12-13 18:13:35,570 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-12-13 18:13:35,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-12-13 18:13:35,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-12-13 18:13:35,571 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-12-13 18:13:35,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-12-13 18:13:35,573 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-12-13 18:13:35,575 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-12-13 18:13:35,575 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-12-13 18:13:35,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-12-13 18:13:35,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:35,576 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-12-13 18:13:35,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-12-13 18:13:35,578 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-12-13 18:13:35,578 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-12-13 18:13:35,578 INFO L513 LassoAnalysis]: Proved termination. [2022-12-13 18:13:35,578 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2022-12-13 18:13:35,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2022-12-13 18:13:35,580 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-12-13 18:13:35,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:13:35,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:35,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:35,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:13:35,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:35,829 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 18:13:35,829 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 18:13:35,829 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:13:35,975 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 231 states and 259 transitions. Complement of second has 28 states. [2022-12-13 18:13:35,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-12-13 18:13:35,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:13:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-12-13 18:13:35,977 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-12-13 18:13:35,977 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:35,977 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 18:13:35,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:36,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:36,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:13:36,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:36,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:13:36,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:36,263 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 18:13:36,264 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2022-12-13 18:13:36,264 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:13:36,423 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 231 states and 259 transitions. Complement of second has 28 states. [2022-12-13 18:13:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-12-13 18:13:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:13:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 33 transitions. [2022-12-13 18:13:36,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 33 transitions. Stem has 38 letters. Loop has 14 letters. [2022-12-13 18:13:36,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:36,424 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-12-13 18:13:36,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:36,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:13:36,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:36,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:13:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:36,738 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 18:13:36,739 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 8 loop predicates [2022-12-13 18:13:36,739 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:13:36,943 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 158 states and 177 transitions. cyclomatic complexity: 24. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Result 338 states and 380 transitions. Complement of second has 29 states. [2022-12-13 18:13:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2022-12-13 18:13:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 18:13:36,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 43 transitions. [2022-12-13 18:13:36,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 14 letters. [2022-12-13 18:13:36,944 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:36,944 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 52 letters. Loop has 14 letters. [2022-12-13 18:13:36,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:36,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 43 transitions. Stem has 38 letters. Loop has 28 letters. [2022-12-13 18:13:36,945 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-12-13 18:13:36,945 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 338 states and 380 transitions. [2022-12-13 18:13:36,948 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 64 [2022-12-13 18:13:36,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 338 states to 220 states and 255 transitions. [2022-12-13 18:13:36,949 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 82 [2022-12-13 18:13:36,950 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 100 [2022-12-13 18:13:36,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 220 states and 255 transitions. [2022-12-13 18:13:36,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:36,950 INFO L218 hiAutomatonCegarLoop]: Abstraction has 220 states and 255 transitions. [2022-12-13 18:13:36,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states and 255 transitions. [2022-12-13 18:13:36,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 168. [2022-12-13 18:13:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 112 states have (on average 1.125) internal successors, (126), 120 states have internal predecessors, (126), 35 states have call successors, (36), 28 states have call predecessors, (36), 21 states have return successors, (27), 19 states have call predecessors, (27), 26 states have call successors, (27) [2022-12-13 18:13:36,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 189 transitions. [2022-12-13 18:13:36,953 INFO L240 hiAutomatonCegarLoop]: Abstraction has 168 states and 189 transitions. [2022-12-13 18:13:36,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:36,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:13:36,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:13:36,953 INFO L87 Difference]: Start difference. First operand 168 states and 189 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 18:13:37,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:37,088 INFO L93 Difference]: Finished difference Result 178 states and 198 transitions. [2022-12-13 18:13:37,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 178 states and 198 transitions. [2022-12-13 18:13:37,089 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-12-13 18:13:37,089 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 178 states to 159 states and 178 transitions. [2022-12-13 18:13:37,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-12-13 18:13:37,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-12-13 18:13:37,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 178 transitions. [2022-12-13 18:13:37,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-12-13 18:13:37,090 INFO L218 hiAutomatonCegarLoop]: Abstraction has 159 states and 178 transitions. [2022-12-13 18:13:37,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 178 transitions. [2022-12-13 18:13:37,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2022-12-13 18:13:37,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 113 states have internal predecessors, (120), 32 states have call successors, (32), 27 states have call predecessors, (32), 19 states have return successors, (23), 16 states have call predecessors, (23), 23 states have call successors, (23) [2022-12-13 18:13:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 175 transitions. [2022-12-13 18:13:37,094 INFO L240 hiAutomatonCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-12-13 18:13:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:13:37,095 INFO L428 stractBuchiCegarLoop]: Abstraction has 157 states and 175 transitions. [2022-12-13 18:13:37,095 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-12-13 18:13:37,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 157 states and 175 transitions. [2022-12-13 18:13:37,096 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 42 [2022-12-13 18:13:37,096 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-12-13 18:13:37,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-12-13 18:13:37,097 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:37,097 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:13:37,097 INFO L748 eck$LassoCheckResult]: Stem: 11246#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 11225#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 4; 11226#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 11249#$Ultimate##0 ~n := #in~n; 11239#L10 assume !(~n < 1); 11233#L12 assume !(1 == ~n); 11195#L15 call #t~ret4 := fibo2(~n - 1);< 11202#$Ultimate##0 ~n := #in~n; 11203#L20 assume !(~n < 1); 11194#L22 assume !(1 == ~n); 11196#L25 call #t~ret6 := fibo1(~n - 1);< 11273#$Ultimate##0 ~n := #in~n; 11285#L10 assume !(~n < 1); 11284#L12 assume !(1 == ~n); 11281#L15 call #t~ret4 := fibo2(~n - 1);< 11282#$Ultimate##0 ~n := #in~n; 11289#L20 assume !(~n < 1); 11288#L22 assume 1 == ~n;#res := 1; 11287#fibo2FINAL assume true; 11280#fibo2EXIT >#50#return; 11277#L15-1 call #t~ret5 := fibo2(~n - 2);< 11278#$Ultimate##0 ~n := #in~n; 11283#L20 assume ~n < 1;#res := 0; 11279#fibo2FINAL assume true; 11276#fibo2EXIT >#52#return; 11275#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11274#fibo1FINAL assume true; 11272#fibo1EXIT >#46#return; 11268#L25-1 call #t~ret7 := fibo1(~n - 2);< 11219#$Ultimate##0 ~n := #in~n; 11270#L10 assume !(~n < 1); 11269#L12 assume !(1 == ~n); 11218#L15 call #t~ret4 := fibo2(~n - 1);< 11267#$Ultimate##0 ~n := #in~n; 11264#L20 assume !(~n < 1); 11257#L22 assume 1 == ~n;#res := 1; 11258#fibo2FINAL assume true; 11328#fibo2EXIT >#50#return; 11245#L15-1 [2022-12-13 18:13:37,097 INFO L750 eck$LassoCheckResult]: Loop: 11245#L15-1 call #t~ret5 := fibo2(~n - 2);< 11325#$Ultimate##0 ~n := #in~n; 11320#L20 assume !(~n < 1); 11319#L22 assume !(1 == ~n); 11296#L25 call #t~ret6 := fibo1(~n - 1);< 11318#$Ultimate##0 ~n := #in~n; 11334#L10 assume !(~n < 1); 11333#L12 assume !(1 == ~n); 11295#L15 call #t~ret4 := fibo2(~n - 1);< 11297#$Ultimate##0 ~n := #in~n; 11324#L20 assume !(~n < 1); 11331#L22 assume 1 == ~n;#res := 1; 11330#fibo2FINAL assume true; 11329#fibo2EXIT >#50#return; 11316#L15-1 call #t~ret5 := fibo2(~n - 2);< 11322#$Ultimate##0 ~n := #in~n; 11323#L20 assume ~n < 1;#res := 0; 11336#fibo2FINAL assume true; 11327#fibo2EXIT >#52#return; 11326#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 11321#fibo1FINAL assume true; 11317#fibo1EXIT >#46#return; 11221#L25-1 call #t~ret7 := fibo1(~n - 2);< 11220#$Ultimate##0 ~n := #in~n; 11222#L10 assume !(~n < 1); 11232#L12 assume !(1 == ~n); 11191#L15 call #t~ret4 := fibo2(~n - 1);< 11240#$Ultimate##0 ~n := #in~n; 11314#L20 assume !(~n < 1); 11190#L22 assume 1 == ~n;#res := 1; 11192#fibo2FINAL assume true; 11244#fibo2EXIT >#50#return; 11245#L15-1 [2022-12-13 18:13:37,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash 772882902, now seen corresponding path program 1 times [2022-12-13 18:13:37,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:37,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090944840] [2022-12-13 18:13:37,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:37,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:13:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:13:37,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:13:37,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:37,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090944840] [2022-12-13 18:13:37,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090944840] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:37,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387704421] [2022-12-13 18:13:37,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:37,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:37,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:37,178 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:37,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-12-13 18:13:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:13:37,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:37,251 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:13:37,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 18:13:37,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387704421] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:37,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:37,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 13 [2022-12-13 18:13:37,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769370410] [2022-12-13 18:13:37,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:37,325 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-12-13 18:13:37,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:13:37,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1807088251, now seen corresponding path program 1 times [2022-12-13 18:13:37,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:13:37,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640755922] [2022-12-13 18:13:37,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:37,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:13:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:13:37,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-12-13 18:13:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:13:37,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 18:13:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 18:13:37,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:13:37,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640755922] [2022-12-13 18:13:37,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640755922] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:13:37,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364156529] [2022-12-13 18:13:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:13:37,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:13:37,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:13:37,408 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:13:37,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-12-13 18:13:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:13:37,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:13:37,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:13:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 18:13:37,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:13:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 18:13:37,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364156529] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:13:37,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:13:37,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2022-12-13 18:13:37,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403229324] [2022-12-13 18:13:37,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:13:37,632 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-12-13 18:13:37,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:13:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 18:13:37,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:13:37,633 INFO L87 Difference]: Start difference. First operand 157 states and 175 transitions. cyclomatic complexity: 23 Second operand has 18 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 9 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 18:13:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:13:37,740 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2022-12-13 18:13:37,740 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 44 transitions. [2022-12-13 18:13:37,741 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 18:13:37,741 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 0 states and 0 transitions. [2022-12-13 18:13:37,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-12-13 18:13:37,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-12-13 18:13:37,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-12-13 18:13:37,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:13:37,741 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:13:37,741 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:13:37,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:13:37,742 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 18:13:37,742 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-12-13 18:13:37,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-12-13 18:13:37,742 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-12-13 18:13:37,742 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-12-13 18:13:37,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.12 06:13:37 BoogieIcfgContainer [2022-12-13 18:13:37,747 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-12-13 18:13:37,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 18:13:37,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 18:13:37,748 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 18:13:37,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:13:26" (3/4) ... [2022-12-13 18:13:37,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 18:13:37,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 18:13:37,750 INFO L158 Benchmark]: Toolchain (without parser) took 11990.88ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 103.3MB in the beginning and 100.3MB in the end (delta: 2.9MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2022-12-13 18:13:37,750 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 92.3MB. Free memory was 44.7MB in the beginning and 44.6MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:13:37,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.74ms. Allocated memory is still 138.4MB. Free memory was 102.9MB in the beginning and 92.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 18:13:37,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.62ms. Allocated memory is still 138.4MB. Free memory was 92.8MB in the beginning and 91.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 18:13:37,751 INFO L158 Benchmark]: Boogie Preprocessor took 13.80ms. Allocated memory is still 138.4MB. Free memory was 91.6MB in the beginning and 90.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:13:37,751 INFO L158 Benchmark]: RCFGBuilder took 191.24ms. Allocated memory is still 138.4MB. Free memory was 90.3MB in the beginning and 81.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 18:13:37,751 INFO L158 Benchmark]: BuchiAutomizer took 11571.05ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 80.7MB in the beginning and 101.4MB in the end (delta: -20.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-12-13 18:13:37,751 INFO L158 Benchmark]: Witness Printer took 2.37ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 100.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 18:13:37,752 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 92.3MB. Free memory was 44.7MB in the beginning and 44.6MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.74ms. Allocated memory is still 138.4MB. Free memory was 102.9MB in the beginning and 92.8MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.62ms. Allocated memory is still 138.4MB. Free memory was 92.8MB in the beginning and 91.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.80ms. Allocated memory is still 138.4MB. Free memory was 91.6MB in the beginning and 90.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 191.24ms. Allocated memory is still 138.4MB. Free memory was 90.3MB in the beginning and 81.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 11571.05ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 80.7MB in the beginning and 101.4MB in the end (delta: -20.7MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Witness Printer took 2.37ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 100.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (8 trivial, 2 deterministic, 2 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 nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function \old(n) and consists of 10 locations. 8 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.5s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 6.9s. Construction of modules took 0.9s. Büchi inclusion checks took 3.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 264 StatesRemovedByMinimization, 11 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 [2, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 704 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 676 mSDsluCounter, 985 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 655 mSDsCounter, 355 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2158 IncrementalHoareTripleChecker+Invalid, 2513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 355 mSolverCounterUnsat, 330 mSDtfsCounter, 2158 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT1 SILN0 SILU0 SILI4 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax100 hnf100 lsp95 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf92 smp83 dnf100 smp100 tf111 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.7s 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 18:13:37,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-12-13 18:13:37,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-12-13 18:13:38,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-12-13 18:13:38,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-12-13 18:13:38,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-12-13 18:13:38,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-12-13 18:13:38,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-12-13 18:13:39,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-12-13 18:13:39,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 18:13:39,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 18:13:39,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3eba9333-e952-488a-9cc0-5df9dc858e24/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