./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b4ec56b 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_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN --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 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 --- 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-6b4ec56 [2022-11-20 11:41:21,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:41:21,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:41:21,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:41:21,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:41:21,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:41:21,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:41:21,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:41:21,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:41:21,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:41:21,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:41:21,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:41:21,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:41:21,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:41:21,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:41:21,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:41:21,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:41:21,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:41:21,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:41:21,135 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:41:21,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:41:21,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:41:21,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:41:21,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:41:21,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:41:21,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:41:21,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:41:21,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:41:21,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:41:21,163 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:41:21,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:41:21,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:41:21,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:41:21,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:41:21,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:41:21,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:41:21,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:41:21,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:41:21,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:41:21,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:41:21,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:41:21,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-20 11:41:21,233 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:41:21,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:41:21,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:41:21,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:41:21,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:41:21,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:41:21,237 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:41:21,238 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-20 11:41:21,238 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-20 11:41:21,238 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-20 11:41:21,240 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-20 11:41:21,240 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-20 11:41:21,240 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-20 11:41:21,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:41:21,241 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:41:21,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:41:21,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:41:21,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:41:21,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:41:21,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-20 11:41:21,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-20 11:41:21,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-20 11:41:21,243 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:41:21,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:41:21,244 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-20 11:41:21,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:41:21,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-20 11:41:21,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:41:21,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:41:21,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:41:21,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:41:21,247 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-20 11:41:21,248 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_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2199d5dae92fc703178378f6dd7dec10a5f129181c51bc9a88c002f6d4f76a67 [2022-11-20 11:41:21,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:41:21,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:41:21,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:41:21,716 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:41:21,717 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:41:21,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/recursive-simple/fibo_5-1.c [2022-11-20 11:41:25,031 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:41:25,274 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:41:25,275 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/sv-benchmarks/c/recursive-simple/fibo_5-1.c [2022-11-20 11:41:25,283 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/data/d0c5d152f/fd6014a088fe41a2a993ed419aacb8e9/FLAG554cd73e1 [2022-11-20 11:41:25,305 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/data/d0c5d152f/fd6014a088fe41a2a993ed419aacb8e9 [2022-11-20 11:41:25,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:41:25,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:41:25,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:41:25,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:41:25,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:41:25,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f878708 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25, skipping insertion in model container [2022-11-20 11:41:25,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:41:25,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:41:25,579 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_5a450358-07ee-4189-9ccb-fc815bfa83f5/sv-benchmarks/c/recursive-simple/fibo_5-1.c[740,753] [2022-11-20 11:41:25,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:41:25,603 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:41:25,622 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_5a450358-07ee-4189-9ccb-fc815bfa83f5/sv-benchmarks/c/recursive-simple/fibo_5-1.c[740,753] [2022-11-20 11:41:25,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:41:25,641 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:41:25,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25 WrapperNode [2022-11-20 11:41:25,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:41:25,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:41:25,645 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:41:25,645 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:41:25,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,683 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-20 11:41:25,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:41:25,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:41:25,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:41:25,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:41:25,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:41:25,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:41:25,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:41:25,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:41:25,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (1/1) ... [2022-11-20 11:41:25,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:25,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:25,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:25,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-20 11:41:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:41:25,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:41:25,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:41:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:41:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2022-11-20 11:41:25,832 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2022-11-20 11:41:25,923 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:41:25,925 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:41:26,036 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:41:26,043 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:41:26,043 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:41:26,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:41:26 BoogieIcfgContainer [2022-11-20 11:41:26,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:41:26,047 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-20 11:41:26,047 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-20 11:41:26,052 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-20 11:41:26,053 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:41:26,053 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 11:41:25" (1/3) ... [2022-11-20 11:41:26,054 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57f80c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:41:26, skipping insertion in model container [2022-11-20 11:41:26,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:41:26,055 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:41:25" (2/3) ... [2022-11-20 11:41:26,055 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@57f80c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 11:41:26, skipping insertion in model container [2022-11-20 11:41:26,055 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-20 11:41:26,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:41:26" (3/3) ... [2022-11-20 11:41:26,057 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_5-1.c [2022-11-20 11:41:26,123 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-20 11:41:26,123 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-20 11:41:26,124 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-20 11:41:26,124 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-20 11:41:26,124 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-20 11:41:26,124 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-20 11:41:26,124 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-20 11:41:26,125 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-20 11:41:26,129 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:41:26,175 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 11:41:26,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:41:26,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:41:26,183 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 11:41:26,183 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:41:26,183 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-20 11:41:26,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:41:26,186 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 11:41:26,186 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:41:26,186 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:41:26,187 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-20 11:41:26,187 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:41:26,220 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 12#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 5#L27true call main_#t~ret6#1 := fibo(main_~x~0#1);< 6#fiboENTRYtrue [2022-11-20 11:41:26,221 INFO L750 eck$LassoCheckResult]: Loop: 6#fiboENTRYtrue ~n := #in~n; 7#L8true assume !(~n < 1); 9#L10true assume !(1 == ~n); 14#L13true call #t~ret4 := fibo(~n - 1);< 6#fiboENTRYtrue [2022-11-20 11:41:26,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 29883, now seen corresponding path program 1 times [2022-11-20 11:41:26,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:26,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706960628] [2022-11-20 11:41:26,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:26,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:26,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:41:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:26,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:41:26,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:26,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 1 times [2022-11-20 11:41:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:26,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674738538] [2022-11-20 11:41:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:26,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:26,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:41:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:26,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:41:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1828301702, now seen corresponding path program 1 times [2022-11-20 11:41:26,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:26,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581767553] [2022-11-20 11:41:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:26,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:26,497 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:41:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:26,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:41:26,733 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:41:26,734 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:41:26,734 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:41:26,734 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:41:26,735 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:41:26,735 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:26,735 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:41:26,736 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:41:26,736 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration1_Loop [2022-11-20 11:41:26,736 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:41:26,736 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:41:26,761 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:26,775 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:26,781 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:26,787 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:26,803 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:26,919 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:41:26,919 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:41:26,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:26,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:26,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:26,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:26,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:26,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-20 11:41:26,979 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:26,979 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret5=0} Honda state: {fibo_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:26,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:26,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:26,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:26,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:27,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:27,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-20 11:41:27,042 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:27,042 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:27,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:27,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:27,059 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,069 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:27,069 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:27,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-20 11:41:27,107 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:27,107 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_~n=0} Honda state: {fibo_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:27,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:27,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:27,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:27,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:27,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-20 11:41:27,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:27,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:27,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,186 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:41:27,187 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:27,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-20 11:41:27,293 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:41:27,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:27,304 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:41:27,304 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:41:27,304 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:41:27,305 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:41:27,305 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:41:27,305 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,305 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:41:27,305 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:41:27,305 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration1_Loop [2022-11-20 11:41:27,305 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:41:27,305 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:41:27,307 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:27,316 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:27,322 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:27,329 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:27,342 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:27,407 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:41:27,413 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:41:27,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:27,417 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,430 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:27,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-20 11:41:27,446 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:27,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:27,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:27,447 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:27,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:27,451 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:27,451 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:27,471 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:27,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:27,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:27,478 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-20 11:41:27,484 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:27,497 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:27,497 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:27,497 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:27,498 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:27,498 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:27,501 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:27,501 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:27,523 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:27,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:27,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:27,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-20 11:41:27,540 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:27,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:27,554 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:27,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:27,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:27,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:27,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:27,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:27,565 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:27,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-20 11:41:27,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:27,573 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-20 11:41:27,577 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:27,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:27,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:27,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:27,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:27,590 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:27,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:27,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:27,601 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:41:27,607 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:41:27,607 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 11:41:27,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:27,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:27,662 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:27,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-20 11:41:27,667 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:41:27,667 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:41:27,667 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:41:27,668 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-20 11:41:27,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:27,678 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:41:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:27,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:27,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:41:27,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:27,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:41:27,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:27,897 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-20 11:41:27,899 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:28,093 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 48 states and 60 transitions. Complement of second has 12 states. [2022-11-20 11:41:28,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:41:28,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:41:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2022-11-20 11:41:28,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-20 11:41:28,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:28,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-20 11:41:28,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:28,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-20 11:41:28,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:28,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 60 transitions. [2022-11-20 11:41:28,122 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 11:41:28,129 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 25 states and 34 transitions. [2022-11-20 11:41:28,130 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-20 11:41:28,131 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-11-20 11:41:28,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 34 transitions. [2022-11-20 11:41:28,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:41:28,132 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-11-20 11:41:28,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 34 transitions. [2022-11-20 11:41:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-20 11:41:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:41:28,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-11-20 11:41:28,169 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-20 11:41:28,169 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-11-20 11:41:28,170 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-20 11:41:28,170 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 26 transitions. [2022-11-20 11:41:28,173 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 11:41:28,173 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:41:28,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:41:28,174 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:28,174 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:28,175 INFO L748 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 122#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 128#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 131#fiboENTRY ~n := #in~n; 132#L8 assume !(~n < 1); 137#L10 assume !(1 == ~n); 126#L13 call #t~ret4 := fibo(~n - 1);< 127#fiboENTRY ~n := #in~n; 133#L8 assume ~n < 1;#res := 0; 134#fiboFINAL assume true; 135#fiboEXIT >#33#return; 124#L13-1 [2022-11-20 11:41:28,175 INFO L750 eck$LassoCheckResult]: Loop: 124#L13-1 call #t~ret5 := fibo(~n - 2);< 125#fiboENTRY ~n := #in~n; 140#L8 assume !(~n < 1); 139#L10 assume !(1 == ~n); 123#L13 call #t~ret4 := fibo(~n - 1);< 125#fiboENTRY ~n := #in~n; 140#L8 assume ~n < 1;#res := 0; 130#fiboFINAL assume true; 138#fiboEXIT >#33#return; 124#L13-1 [2022-11-20 11:41:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:28,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1181449843, now seen corresponding path program 1 times [2022-11-20 11:41:28,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:28,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60507804] [2022-11-20 11:41:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:28,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:28,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:41:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:28,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:41:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:28,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60507804] [2022-11-20 11:41:28,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60507804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:28,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:28,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:41:28,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120160523] [2022-11-20 11:41:28,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:28,420 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 11:41:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 246097683, now seen corresponding path program 1 times [2022-11-20 11:41:28,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:28,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052463436] [2022-11-20 11:41:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:28,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:41:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:28,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:41:28,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:28,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052463436] [2022-11-20 11:41:28,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052463436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:28,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:28,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:41:28,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713618654] [2022-11-20 11:41:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:28,584 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-20 11:41:28,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:28,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:41:28,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:41:28,590 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. cyclomatic complexity: 8 Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 11:41:28,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:28,741 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-11-20 11:41:28,741 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 32 transitions. [2022-11-20 11:41:28,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 11:41:28,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 24 states and 30 transitions. [2022-11-20 11:41:28,755 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-11-20 11:41:28,755 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2022-11-20 11:41:28,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 30 transitions. [2022-11-20 11:41:28,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:41:28,758 INFO L218 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-20 11:41:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 30 transitions. [2022-11-20 11:41:28,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 11:41:28,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:41:28,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-20 11:41:28,765 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-20 11:41:28,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:41:28,769 INFO L428 stractBuchiCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-20 11:41:28,769 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-20 11:41:28,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 30 transitions. [2022-11-20 11:41:28,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-20 11:41:28,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:41:28,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:41:28,774 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:28,775 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:28,775 INFO L748 eck$LassoCheckResult]: Stem: 194#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 195#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 200#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 204#fiboENTRY ~n := #in~n; 206#L8 assume !(~n < 1); 210#L10 assume !(1 == ~n); 199#L13 call #t~ret4 := fibo(~n - 1);< 201#fiboENTRY ~n := #in~n; 207#L8 assume !(~n < 1); 209#L10 assume 1 == ~n;#res := 1; 211#fiboFINAL assume true; 213#fiboEXIT >#33#return; 197#L13-1 [2022-11-20 11:41:28,776 INFO L750 eck$LassoCheckResult]: Loop: 197#L13-1 call #t~ret5 := fibo(~n - 2);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume !(1 == ~n); 196#L13 call #t~ret4 := fibo(~n - 1);< 198#fiboENTRY ~n := #in~n; 216#L8 assume !(~n < 1); 214#L10 assume 1 == ~n;#res := 1; 215#fiboFINAL assume true; 212#fiboEXIT >#33#return; 197#L13-1 [2022-11-20 11:41:28,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:28,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2029785426, now seen corresponding path program 1 times [2022-11-20 11:41:28,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:28,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658060875] [2022-11-20 11:41:28,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:28,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 11:41:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:28,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:28,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:28,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658060875] [2022-11-20 11:41:28,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658060875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:28,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280514093] [2022-11-20 11:41:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:28,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:28,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:28,904 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:28,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:41:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:28,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:41:29,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:29,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:29,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:29,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280514093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:41:29,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:41:29,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-20 11:41:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853717663] [2022-11-20 11:41:29,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:29,270 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 11:41:29,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 1 times [2022-11-20 11:41:29,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:29,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133163212] [2022-11-20 11:41:29,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:29,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:29,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:41:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:29,313 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:41:29,512 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:41:29,513 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:41:29,513 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:41:29,513 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:41:29,513 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:41:29,513 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:29,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:41:29,514 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:41:29,517 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration3_Loop [2022-11-20 11:41:29,518 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:41:29,518 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:41:29,519 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:29,523 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:29,528 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:29,538 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:29,591 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:41:29,591 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:41:29,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:29,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:29,593 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:29,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:29,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:29,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-20 11:41:29,630 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:29,630 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:29,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:29,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:29,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:29,643 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:29,653 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:29,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:29,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-20 11:41:29,687 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:29,687 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:29,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:29,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:29,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:29,697 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:29,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-20 11:41:29,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:29,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:29,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:29,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:29,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:29,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:29,753 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:41:29,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:29,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-20 11:41:30,517 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:41:30,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:30,523 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:41:30,523 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:41:30,523 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:41:30,523 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:41:30,524 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:41:30,524 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:30,524 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:41:30,524 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:41:30,524 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration3_Loop [2022-11-20 11:41:30,524 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:41:30,524 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:41:30,525 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:30,532 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:30,534 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:30,544 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:30,603 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:41:30,604 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:41:30,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:30,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:30,607 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:30,617 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:30,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-20 11:41:30,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:30,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:30,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:30,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:30,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:30,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:30,636 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:30,651 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:30,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:30,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:30,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:30,662 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:30,673 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:30,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-20 11:41:30,688 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:30,688 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:30,688 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:30,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:30,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:30,689 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:30,689 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:30,707 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:30,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:30,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:30,718 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:30,724 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:30,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-20 11:41:30,738 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:30,738 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:30,739 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:30,739 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:30,739 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:30,741 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:30,741 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:30,756 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:41:30,763 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:41:30,763 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 11:41:30,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:30,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:30,767 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:30,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-20 11:41:30,769 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:41:30,770 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:41:30,770 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:41:30,770 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-20 11:41:30,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:30,774 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:41:30,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:30,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:41:30,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:31,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:41:31,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:31,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:31,140 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-20 11:41:31,141 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:41:31,463 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 30 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 135 states and 183 transitions. Complement of second has 36 states. [2022-11-20 11:41:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 11:41:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:41:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-20 11:41:31,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 10 letters. [2022-11-20 11:41:31,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:31,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 22 letters. Loop has 10 letters. [2022-11-20 11:41:31,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:31,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 12 letters. Loop has 20 letters. [2022-11-20 11:41:31,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:31,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 183 transitions. [2022-11-20 11:41:31,475 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-20 11:41:31,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 108 states and 152 transitions. [2022-11-20 11:41:31,479 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 64 [2022-11-20 11:41:31,479 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 69 [2022-11-20 11:41:31,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 152 transitions. [2022-11-20 11:41:31,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:41:31,480 INFO L218 hiAutomatonCegarLoop]: Abstraction has 108 states and 152 transitions. [2022-11-20 11:41:31,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 152 transitions. [2022-11-20 11:41:31,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-20 11:41:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 64 states have internal predecessors, (71), 21 states have call successors, (22), 11 states have call predecessors, (22), 15 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2022-11-20 11:41:31,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 126 transitions. [2022-11-20 11:41:31,496 INFO L240 hiAutomatonCegarLoop]: Abstraction has 94 states and 126 transitions. [2022-11-20 11:41:31,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:31,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:41:31,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:41:31,497 INFO L87 Difference]: Start difference. First operand 94 states and 126 transitions. Second operand has 12 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:41:31,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:31,686 INFO L93 Difference]: Finished difference Result 123 states and 165 transitions. [2022-11-20 11:41:31,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 165 transitions. [2022-11-20 11:41:31,701 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-20 11:41:31,706 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 118 states and 160 transitions. [2022-11-20 11:41:31,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 77 [2022-11-20 11:41:31,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 77 [2022-11-20 11:41:31,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 160 transitions. [2022-11-20 11:41:31,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:41:31,712 INFO L218 hiAutomatonCegarLoop]: Abstraction has 118 states and 160 transitions. [2022-11-20 11:41:31,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states and 160 transitions. [2022-11-20 11:41:31,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2022-11-20 11:41:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 66 states have (on average 1.196969696969697) internal successors, (79), 72 states have internal predecessors, (79), 24 states have call successors, (25), 13 states have call predecessors, (25), 16 states have return successors, (37), 20 states have call predecessors, (37), 22 states have call successors, (37) [2022-11-20 11:41:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 141 transitions. [2022-11-20 11:41:31,733 INFO L240 hiAutomatonCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-20 11:41:31,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:41:31,734 INFO L428 stractBuchiCegarLoop]: Abstraction has 106 states and 141 transitions. [2022-11-20 11:41:31,734 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-20 11:41:31,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 106 states and 141 transitions. [2022-11-20 11:41:31,736 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2022-11-20 11:41:31,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:41:31,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:41:31,738 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:31,738 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:31,738 INFO L748 eck$LassoCheckResult]: Stem: 787#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 788#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 802#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 804#fiboENTRY ~n := #in~n; 852#L8 assume !(~n < 1); 851#L10 assume !(1 == ~n); 801#L13 call #t~ret4 := fibo(~n - 1);< 803#fiboENTRY ~n := #in~n; 813#L8 assume !(~n < 1); 818#L10 assume !(1 == ~n); 824#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 849#L8 assume !(~n < 1); 847#L10 assume !(1 == ~n); 841#L13 call #t~ret4 := fibo(~n - 1);< 845#fiboENTRY ~n := #in~n; 850#L8 assume !(~n < 1); 848#L10 assume 1 == ~n;#res := 1; 846#fiboFINAL assume true; 844#fiboEXIT >#33#return; 790#L13-1 call #t~ret5 := fibo(~n - 2);< 842#fiboENTRY ~n := #in~n; 890#L8 assume ~n < 1;#res := 0; 889#fiboFINAL assume true; 888#fiboEXIT >#35#return; 887#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 885#fiboFINAL assume true; 877#fiboEXIT >#33#return; 820#L13-1 [2022-11-20 11:41:31,739 INFO L750 eck$LassoCheckResult]: Loop: 820#L13-1 call #t~ret5 := fibo(~n - 2);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume !(1 == ~n); 822#L13 call #t~ret4 := fibo(~n - 1);< 800#fiboENTRY ~n := #in~n; 882#L8 assume !(~n < 1); 819#L10 assume 1 == ~n;#res := 1; 823#fiboFINAL assume true; 874#fiboEXIT >#33#return; 820#L13-1 [2022-11-20 11:41:31,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:31,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1730264506, now seen corresponding path program 1 times [2022-11-20 11:41:31,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:31,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828188816] [2022-11-20 11:41:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:31,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:31,765 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:41:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:31,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:41:31,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash -960881524, now seen corresponding path program 2 times [2022-11-20 11:41:31,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:31,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373281753] [2022-11-20 11:41:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:31,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:31,811 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:41:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:31,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:41:31,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:31,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2043808913, now seen corresponding path program 2 times [2022-11-20 11:41:31,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:31,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665869532] [2022-11-20 11:41:31,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:31,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:41:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:32,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:41:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:41:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:32,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:41:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:32,102 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 34 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-20 11:41:32,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:32,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665869532] [2022-11-20 11:41:32,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665869532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:32,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532925523] [2022-11-20 11:41:32,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:41:32,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:32,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:32,105 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:32,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 11:41:32,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:41:32,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:41:32,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:41:32,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:41:32,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:32,478 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 45 proven. 39 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:41:32,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532925523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:41:32,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:41:32,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 15 [2022-11-20 11:41:32,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630156976] [2022-11-20 11:41:32,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:32,625 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:41:32,625 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:41:32,625 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:41:32,626 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:41:32,626 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:41:32,626 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:32,626 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:41:32,626 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:41:32,626 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration4_Loop [2022-11-20 11:41:32,626 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:41:32,627 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:41:32,628 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:32,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:32,635 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:32,644 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:32,689 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:41:32,689 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:41:32,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:32,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:32,691 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:32,701 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:32,701 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:32,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-20 11:41:32,725 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:32,726 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:32,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:32,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:32,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:32,738 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:32,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:32,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:32,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-20 11:41:32,758 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:32,758 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=1} Honda state: {fibo_#t~ret4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:32,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:32,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:32,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:32,763 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:32,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-20 11:41:32,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:32,767 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:32,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:32,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:32,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:32,804 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:32,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-20 11:41:32,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:41:32,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:33,542 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:41:33,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-11-20 11:41:33,546 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:41:33,547 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:41:33,547 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:41:33,547 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:41:33,547 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:41:33,547 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:33,547 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:41:33,547 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:41:33,547 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration4_Loop [2022-11-20 11:41:33,547 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:41:33,547 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:41:33,548 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:33,554 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:33,570 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:33,574 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:33,619 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:41:33,619 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:41:33,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:33,621 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:33,629 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:33,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-20 11:41:33,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:33,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:33,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:33,644 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:33,644 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:33,646 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:33,646 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:33,663 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:33,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:33,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:33,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:33,673 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:33,683 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:33,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-20 11:41:33,701 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:33,702 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:33,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:33,702 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:33,702 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:33,704 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:33,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:33,718 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:41:33,737 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-20 11:41:33,737 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-20 11:41:33,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:33,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:33,741 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:33,746 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:41:33,746 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:41:33,746 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:41:33,746 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_~n) = 1*fibo_~n Supporting invariants [] [2022-11-20 11:41:33,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-20 11:41:33,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:33,756 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:41:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:33,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:41:33,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:33,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:34,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:41:34,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:34,308 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-20 11:41:34,310 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:41:34,577 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 175 states and 233 transitions. Complement of second has 33 states. [2022-11-20 11:41:34,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 11:41:34,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:41:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 37 transitions. [2022-11-20 11:41:34,580 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 37 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-20 11:41:34,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:34,581 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:41:34,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:34,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:41:34,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:34,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:41:34,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:35,029 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-20 11:41:35,029 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:41:35,246 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 300 states and 403 transitions. Complement of second has 25 states. [2022-11-20 11:41:35,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2022-11-20 11:41:35,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:41:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2022-11-20 11:41:35,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-20 11:41:35,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:35,252 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:41:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:35,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:41:35,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:35,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:41:35,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:35,754 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2022-11-20 11:41:35,754 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40 Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:41:36,067 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 106 states and 141 transitions. cyclomatic complexity: 40. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Result 858 states and 1136 transitions. Complement of second has 130 states. [2022-11-20 11:41:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2022-11-20 11:41:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:41:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 42 transitions. [2022-11-20 11:41:36,074 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 10 letters. [2022-11-20 11:41:36,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:36,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 42 letters. Loop has 10 letters. [2022-11-20 11:41:36,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:36,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 42 transitions. Stem has 32 letters. Loop has 20 letters. [2022-11-20 11:41:36,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:36,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 858 states and 1136 transitions. [2022-11-20 11:41:36,103 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2022-11-20 11:41:36,128 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 858 states to 430 states and 620 transitions. [2022-11-20 11:41:36,128 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 163 [2022-11-20 11:41:36,131 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2022-11-20 11:41:36,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 430 states and 620 transitions. [2022-11-20 11:41:36,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:41:36,132 INFO L218 hiAutomatonCegarLoop]: Abstraction has 430 states and 620 transitions. [2022-11-20 11:41:36,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states and 620 transitions. [2022-11-20 11:41:36,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 352. [2022-11-20 11:41:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 221 states have (on average 1.1990950226244343) internal successors, (265), 235 states have internal predecessors, (265), 75 states have call successors, (84), 46 states have call predecessors, (84), 56 states have return successors, (136), 70 states have call predecessors, (136), 71 states have call successors, (136) [2022-11-20 11:41:36,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 485 transitions. [2022-11-20 11:41:36,189 INFO L240 hiAutomatonCegarLoop]: Abstraction has 352 states and 485 transitions. [2022-11-20 11:41:36,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:41:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:41:36,190 INFO L87 Difference]: Start difference. First operand 352 states and 485 transitions. Second operand has 15 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 7 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-20 11:41:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:36,510 INFO L93 Difference]: Finished difference Result 143 states and 171 transitions. [2022-11-20 11:41:36,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 143 states and 171 transitions. [2022-11-20 11:41:36,512 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:41:36,514 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 143 states to 141 states and 167 transitions. [2022-11-20 11:41:36,514 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 80 [2022-11-20 11:41:36,514 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 101 [2022-11-20 11:41:36,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 167 transitions. [2022-11-20 11:41:36,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-20 11:41:36,515 INFO L218 hiAutomatonCegarLoop]: Abstraction has 141 states and 167 transitions. [2022-11-20 11:41:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states and 167 transitions. [2022-11-20 11:41:36,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 109. [2022-11-20 11:41:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 74 states have (on average 1.1081081081081081) internal successors, (82), 74 states have internal predecessors, (82), 20 states have call successors, (24), 17 states have call predecessors, (24), 15 states have return successors, (22), 17 states have call predecessors, (22), 17 states have call successors, (22) [2022-11-20 11:41:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 128 transitions. [2022-11-20 11:41:36,522 INFO L240 hiAutomatonCegarLoop]: Abstraction has 109 states and 128 transitions. [2022-11-20 11:41:36,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:41:36,528 INFO L428 stractBuchiCegarLoop]: Abstraction has 109 states and 128 transitions. [2022-11-20 11:41:36,529 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-20 11:41:36,529 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 128 transitions. [2022-11-20 11:41:36,530 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-20 11:41:36,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-20 11:41:36,531 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-20 11:41:36,532 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 6, 5, 5, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:36,533 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-20 11:41:36,533 INFO L748 eck$LassoCheckResult]: Stem: 3655#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(11, 2);call #Ultimate.allocInit(12, 3); 3656#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret6#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 3671#L27 call main_#t~ret6#1 := fibo(main_~x~0#1);< 3672#fiboENTRY ~n := #in~n; 3715#L8 assume !(~n < 1); 3714#L10 assume !(1 == ~n); 3708#L13 call #t~ret4 := fibo(~n - 1);< 3713#fiboENTRY ~n := #in~n; 3712#L8 assume !(~n < 1); 3711#L10 assume !(1 == ~n); 3661#L13 call #t~ret4 := fibo(~n - 1);< 3662#fiboENTRY ~n := #in~n; 3676#L8 assume !(~n < 1); 3687#L10 assume !(1 == ~n); 3660#L13 call #t~ret4 := fibo(~n - 1);< 3662#fiboENTRY ~n := #in~n; 3677#L8 assume !(~n < 1); 3730#L10 assume 1 == ~n;#res := 1; 3729#fiboFINAL assume true; 3727#fiboEXIT >#33#return; 3674#L13-1 call #t~ret5 := fibo(~n - 2);< 3740#fiboENTRY ~n := #in~n; 3746#L8 assume ~n < 1;#res := 0; 3745#fiboFINAL assume true; 3739#fiboEXIT >#35#return; 3719#L13-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 3720#fiboFINAL assume true; 3710#fiboEXIT >#33#return; 3702#L13-1 call #t~ret5 := fibo(~n - 2);< 3707#fiboENTRY ~n := #in~n; 3706#L8 assume !(~n < 1); 3703#L10 assume !(1 == ~n); 3705#L13 call #t~ret4 := fibo(~n - 1);< 3659#fiboENTRY ~n := #in~n; 3760#L8 assume !(~n < 1); 3761#L10 assume !(1 == ~n); 3665#L13 call #t~ret4 := fibo(~n - 1);< 3732#fiboENTRY [2022-11-20 11:41:36,534 INFO L750 eck$LassoCheckResult]: Loop: 3732#fiboENTRY ~n := #in~n; 3763#L8 assume !(~n < 1); 3759#L10 assume !(1 == ~n); 3664#L13 call #t~ret4 := fibo(~n - 1);< 3732#fiboENTRY [2022-11-20 11:41:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:36,534 INFO L85 PathProgramCache]: Analyzing trace with hash 561439143, now seen corresponding path program 3 times [2022-11-20 11:41:36,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:36,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266571950] [2022-11-20 11:41:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:36,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:36,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:41:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:36,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 11:41:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:36,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:41:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:41:36,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:36,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266571950] [2022-11-20 11:41:36,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266571950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:41:36,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23102563] [2022-11-20 11:41:36,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:41:36,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:41:36,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:36,761 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:41:36,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-20 11:41:36,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 11:41:36,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:41:36,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:41:36,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:41:36,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:41:37,154 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 37 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:41:37,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23102563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:41:37,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:41:37,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 11] total 14 [2022-11-20 11:41:37,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786741322] [2022-11-20 11:41:37,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:41:37,158 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-20 11:41:37,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:37,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1450956, now seen corresponding path program 2 times [2022-11-20 11:41:37,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:37,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045730340] [2022-11-20 11:41:37,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:37,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:37,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:41:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:41:37,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:41:37,211 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:41:37,211 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:41:37,211 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:41:37,211 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:41:37,211 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-20 11:41:37,212 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,212 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:41:37,212 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:41:37,212 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration5_Loop [2022-11-20 11:41:37,212 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:41:37,212 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:41:37,214 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,217 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,219 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,227 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,230 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,279 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:41:37,279 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-20 11:41:37,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,281 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:37,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:37,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-20 11:41:37,319 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:37,319 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#t~ret4=0} Honda state: {fibo_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:37,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:37,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,331 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,335 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:37,335 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:37,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-20 11:41:37,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-20 11:41:37,367 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo_#res=0} Honda state: {fibo_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-20 11:41:37,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:37,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,379 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-20 11:41:37,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:37,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-20 11:41:37,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:37,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,430 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-20 11:41:37,436 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-20 11:41:37,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-20 11:41:37,539 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-20 11:41:37,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2022-11-20 11:41:37,544 INFO L210 LassoAnalysis]: Preferences: [2022-11-20 11:41:37,544 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-20 11:41:37,544 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-20 11:41:37,544 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-20 11:41:37,545 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-20 11:41:37,545 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,545 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-20 11:41:37,545 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-20 11:41:37,545 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_5-1.c_Iteration5_Loop [2022-11-20 11:41:37,545 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-20 11:41:37,545 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-20 11:41:37,546 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,557 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,559 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,563 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,573 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-20 11:41:37,625 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-20 11:41:37,626 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-20 11:41:37,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,627 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,635 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:37,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-20 11:41:37,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:37,650 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:37,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:37,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:37,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:37,651 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:37,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:37,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:37,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:37,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,673 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-20 11:41:37,680 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:37,695 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:37,695 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:37,695 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:37,695 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:37,695 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:37,696 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:37,696 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:37,719 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:37,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:37,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,725 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,731 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:37,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-20 11:41:37,746 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:37,746 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:37,747 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:37,747 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:37,747 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:37,748 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:37,748 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:37,763 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-20 11:41:37,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:37,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,774 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,779 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-20 11:41:37,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-20 11:41:37,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-20 11:41:37,794 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-20 11:41:37,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-20 11:41:37,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-20 11:41:37,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-20 11:41:37,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-20 11:41:37,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-20 11:41:37,822 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-20 11:41:37,825 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-20 11:41:37,825 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-20 11:41:37,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-20 11:41:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:41:37,830 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-20 11:41:37,836 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-20 11:41:37,836 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-20 11:41:37,836 INFO L513 LassoAnalysis]: Proved termination. [2022-11-20 11:41:37,836 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo_#in~n) = 1*fibo_#in~n Supporting invariants [] [2022-11-20 11:41:37,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-20 11:41:37,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:37,847 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-20 11:41:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:37,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:41:37,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:38,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:41:38,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:38,233 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-20 11:41:38,233 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:41:38,309 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 119 states and 138 transitions. Complement of second has 13 states. [2022-11-20 11:41:38,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:41:38,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:41:38,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-20 11:41:38,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-20 11:41:38,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:38,311 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:41:38,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:38,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:41:38,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:38,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:38,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:41:38,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:38,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:38,723 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-20 11:41:38,723 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:41:38,802 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 119 states and 138 transitions. Complement of second has 13 states. [2022-11-20 11:41:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:41:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:41:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2022-11-20 11:41:38,804 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-20 11:41:38,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:38,805 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-20 11:41:38,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:38,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:41:38,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:39,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:41:39,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:41:39,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:41:39,178 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2022-11-20 11:41:39,178 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:41:39,268 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 128 transitions. cyclomatic complexity: 22. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 160 states and 181 transitions. Complement of second has 14 states. [2022-11-20 11:41:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 2 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-20 11:41:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:41:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2022-11-20 11:41:39,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 37 letters. Loop has 4 letters. [2022-11-20 11:41:39,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:39,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 41 letters. Loop has 4 letters. [2022-11-20 11:41:39,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:39,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 37 letters. Loop has 8 letters. [2022-11-20 11:41:39,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-20 11:41:39,272 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 181 transitions. [2022-11-20 11:41:39,274 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:41:39,274 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 0 states and 0 transitions. [2022-11-20 11:41:39,274 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 11:41:39,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 11:41:39,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 11:41:39,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:41:39,275 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:41:39,275 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:41:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:39,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 11:41:39,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:41:39,277 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 9 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:41:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:39,277 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-20 11:41:39,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-20 11:41:39,277 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:41:39,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:41:39,278 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-20 11:41:39,278 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-20 11:41:39,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-20 11:41:39,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:41:39,278 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:41:39,278 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:41:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:41:39,279 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:41:39,279 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-20 11:41:39,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:41:39,280 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-20 11:41:39,280 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-20 11:41:39,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 11:41:39 BoogieIcfgContainer [2022-11-20 11:41:39,289 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-20 11:41:39,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:41:39,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:41:39,290 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:41:39,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:41:26" (3/4) ... [2022-11-20 11:41:39,294 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:41:39,294 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:41:39,295 INFO L158 Benchmark]: Toolchain (without parser) took 13979.89ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 116.3MB in the beginning and 104.4MB in the end (delta: 11.9MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2022-11-20 11:41:39,295 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:41:39,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.88ms. Allocated memory is still 159.4MB. Free memory was 116.3MB in the beginning and 106.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:41:39,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.14ms. Allocated memory is still 159.4MB. Free memory was 106.5MB in the beginning and 105.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:41:39,296 INFO L158 Benchmark]: Boogie Preprocessor took 33.85ms. Allocated memory is still 159.4MB. Free memory was 105.2MB in the beginning and 104.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:41:39,296 INFO L158 Benchmark]: RCFGBuilder took 326.25ms. Allocated memory is still 159.4MB. Free memory was 104.2MB in the beginning and 95.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 11:41:39,297 INFO L158 Benchmark]: BuchiAutomizer took 13241.62ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 94.8MB in the beginning and 104.4MB in the end (delta: -9.7MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-11-20 11:41:39,297 INFO L158 Benchmark]: Witness Printer took 4.58ms. Allocated memory is still 192.9MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:41:39,299 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 92.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.88ms. Allocated memory is still 159.4MB. Free memory was 116.3MB in the beginning and 106.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.14ms. Allocated memory is still 159.4MB. Free memory was 106.5MB in the beginning and 105.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.85ms. Allocated memory is still 159.4MB. Free memory was 105.2MB in the beginning and 104.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 326.25ms. Allocated memory is still 159.4MB. Free memory was 104.2MB in the beginning and 95.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 13241.62ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 94.8MB in the beginning and 104.4MB in the end (delta: -9.7MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * Witness Printer took 4.58ms. Allocated memory is still 192.9MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (4 trivial, 2 deterministic, 2 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 4 locations. One deterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function n and consists of 9 locations. One nondeterministic module has affine ranking function \old(n) and consists of 5 locations. 4 modules have a trivial ranking function, the largest among these consists of 15 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.1s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 7.2s. Construction of modules took 0.7s. Büchi inclusion checks took 4.8s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.1s 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, 373 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 361 mSDsluCounter, 292 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152 mSDsCounter, 186 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 186 mSolverCounterUnsat, 140 mSDtfsCounter, 646 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI1 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp90 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf92 smp83 dnf100 smp100 tf110 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 57ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-20 11:41:39,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-20 11:41:39,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-20 11:41:39,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 11:41:39,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a450358-07ee-4189-9ccb-fc815bfa83f5/bin/uautomizer-ug76WZFUDN/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