./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:52:02,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:52:02,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:52:02,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:52:02,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:52:02,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:52:02,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:52:02,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:52:02,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:52:02,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:52:02,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:52:02,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:52:02,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:52:02,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:52:02,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:52:02,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:52:02,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:52:02,600 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:52:02,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:52:02,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:52:02,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:52:02,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:52:02,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:52:02,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:52:02,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:52:02,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:52:02,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:52:02,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:52:02,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:52:02,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:52:02,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:52:02,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:52:02,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:52:02,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:52:02,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:52:02,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:52:02,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:52:02,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:52:02,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:52:02,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:52:02,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:52:02,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 08:52:02,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:52:02,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:52:02,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:52:02,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:52:02,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:52:02,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:52:02,665 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:52:02,665 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 08:52:02,665 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 08:52:02,666 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 08:52:02,666 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 08:52:02,666 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 08:52:02,666 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 08:52:02,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:52:02,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:52:02,667 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 08:52:02,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:52:02,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:52:02,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:52:02,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 08:52:02,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 08:52:02,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 08:52:02,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:52:02,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:52:02,669 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 08:52:02,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:52:02,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 08:52:02,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:52:02,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:52:02,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:52:02,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:52:02,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:52:02,671 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 08:52:02,671 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_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2021-10-28 08:52:02,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:52:02,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:52:02,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:52:02,992 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:52:02,993 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:52:02,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2021-10-28 08:52:03,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/data/e634a5615/fbb442abebb84aadbc5660759b13dff9/FLAG318b70812 [2021-10-28 08:52:03,596 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:52:03,597 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2021-10-28 08:52:03,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/data/e634a5615/fbb442abebb84aadbc5660759b13dff9/FLAG318b70812 [2021-10-28 08:52:03,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/data/e634a5615/fbb442abebb84aadbc5660759b13dff9 [2021-10-28 08:52:03,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:52:03,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:52:03,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:03,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:52:03,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:52:03,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:03" (1/1) ... [2021-10-28 08:52:03,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76440e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:03, skipping insertion in model container [2021-10-28 08:52:03,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:03" (1/1) ... [2021-10-28 08:52:03,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:52:03,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:52:04,193 WARN L228 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_fc7b07b5-9615-49d2-a078-475327946cd1/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2021-10-28 08:52:04,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:04,207 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:52:04,225 WARN L228 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_fc7b07b5-9615-49d2-a078-475327946cd1/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2021-10-28 08:52:04,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:04,239 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:52:04,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04 WrapperNode [2021-10-28 08:52:04,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:04,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:04,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:52:04,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:52:04,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:04,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:52:04,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:52:04,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:52:04,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:52:04,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:52:04,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:52:04,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:52:04,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (1/1) ... [2021-10-28 08:52:04,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:04,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:04,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:04,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 08:52:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:52:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-10-28 08:52:04,385 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-10-28 08:52:04,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:52:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-10-28 08:52:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-10-28 08:52:04,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:52:04,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:52:04,561 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:52:04,561 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 08:52:04,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:04 BoogieIcfgContainer [2021-10-28 08:52:04,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:52:04,564 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 08:52:04,564 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 08:52:04,567 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 08:52:04,568 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:52:04,569 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 08:52:03" (1/3) ... [2021-10-28 08:52:04,570 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4acdc7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:52:04, skipping insertion in model container [2021-10-28 08:52:04,570 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:52:04,570 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:04" (2/3) ... [2021-10-28 08:52:04,571 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4acdc7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 08:52:04, skipping insertion in model container [2021-10-28 08:52:04,571 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 08:52:04,571 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:04" (3/3) ... [2021-10-28 08:52:04,572 INFO L389 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2021-10-28 08:52:04,614 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 08:52:04,614 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 08:52:04,615 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 08:52:04,615 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 08:52:04,615 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 08:52:04,615 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 08:52:04,615 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 08:52:04,616 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 08:52:04,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-28 08:52:04,700 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:52:04,701 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:04,701 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:04,708 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 08:52:04,728 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:04,728 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 08:52:04,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-28 08:52:04,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:52:04,734 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:04,734 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:04,734 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 08:52:04,735 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:04,741 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 15#L39true call main_#t~ret11 := fibo1(main_~x~0);< 5#fibo1ENTRYtrue [2021-10-28 08:52:04,742 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret7 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret9 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-10-28 08:52:04,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-10-28 08:52:04,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:04,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644600478] [2021-10-28 08:52:04,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:04,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:04,909 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:04,963 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:04,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-10-28 08:52:04,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:04,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188713820] [2021-10-28 08:52:04,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:04,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:04,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:04,975 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:04,983 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:04,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:04,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-10-28 08:52:04,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:04,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451357150] [2021-10-28 08:52:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:04,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:05,004 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:05,033 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:05,331 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:52:05,332 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:52:05,332 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:52:05,332 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:52:05,332 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:52:05,333 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,333 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:52:05,333 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:52:05,333 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2021-10-28 08:52:05,333 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:52:05,334 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:52:05,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,363 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,369 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:05,437 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:52:05,438 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:52:05,440 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:05,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:05,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:05,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:05,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 08:52:05,473 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:05,473 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:05,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:05,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:05,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:05,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 08:52:05,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:05,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:05,544 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:05,544 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:05,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:05,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:05,579 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:05,592 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:05,592 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:05,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 08:52:05,612 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:05,612 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:05,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:05,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:05,652 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:05,658 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:05,658 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:05,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 08:52:05,678 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:05,678 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:05,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:05,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:05,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:05,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:05,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:05,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 08:52:05,768 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:05,768 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:05,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:05,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:05,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:05,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:05,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:05,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 08:52:05,832 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:05,832 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:05,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:05,868 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:05,869 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:05,876 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:05,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:05,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 08:52:05,904 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:05,904 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:05,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:05,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:05,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:05,941 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:05,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:05,947 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:05,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 08:52:05,968 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:05,968 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:06,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,006 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,012 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:06,012 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:06,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 08:52:06,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,075 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,077 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,083 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:52:06,083 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:06,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 08:52:06,192 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:52:06,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,199 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:52:06,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:52:06,199 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:52:06,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:52:06,200 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:52:06,200 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,200 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:52:06,200 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:52:06,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2021-10-28 08:52:06,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:52:06,200 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:52:06,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,212 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:06,293 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:52:06,297 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:52:06,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,300 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,313 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 [2021-10-28 08:52:06,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,324 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,324 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,326 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,326 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 08:52:06,340 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:06,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,370 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 08:52:06,372 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 [2021-10-28 08:52:06,381 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,382 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,382 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,382 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,382 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,383 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,383 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:06,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,436 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,437 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 08:52:06,448 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 [2021-10-28 08:52:06,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,476 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:06,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,510 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,511 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,524 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 [2021-10-28 08:52:06,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,535 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,535 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 08:52:06,548 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:06,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,584 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,592 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 [2021-10-28 08:52:06,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 08:52:06,600 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,600 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,600 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,600 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,600 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,601 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,601 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,615 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:06,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,652 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,660 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 [2021-10-28 08:52:06,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,670 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,671 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 08:52:06,684 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:06,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,712 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,716 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 08:52:06,719 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 [2021-10-28 08:52:06,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,728 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,728 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,728 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,729 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,729 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,748 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:06,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,783 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,784 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,790 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 [2021-10-28 08:52:06,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,799 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 08:52:06,820 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:06,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,856 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,857 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 08:52:06,865 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 [2021-10-28 08:52:06,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:06,872 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:06,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:06,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:06,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:06,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:06,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:06,900 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:52:06,904 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 08:52:06,904 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:52:06,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:06,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:06,913 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:06,949 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:52:06,949 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:52:06,949 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:52:06,949 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-10-28 08:52:06,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 08:52:06,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:06,986 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:52:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:07,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:52:07,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:07,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:52:07,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:07,252 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-28 08:52:07,253 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:07,493 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2021-10-28 08:52:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 08:52:07,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-10-28 08:52:07,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-28 08:52:07,501 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:07,501 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-28 08:52:07,502 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:07,502 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-10-28 08:52:07,503 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:07,504 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-10-28 08:52:07,517 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:52:07,524 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-10-28 08:52:07,525 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-28 08:52:07,526 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-28 08:52:07,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-10-28 08:52:07,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:07,528 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-10-28 08:52:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-10-28 08:52:07,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-28 08:52:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-28 08:52:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-10-28 08:52:07,560 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-28 08:52:07,560 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-28 08:52:07,560 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 08:52:07,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-10-28 08:52:07,562 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:52:07,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:07,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:07,563 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:07,563 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:07,563 INFO L791 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 197#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 214#L39 call main_#t~ret11 := fibo1(main_~x~0);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret7 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret9 := fibo1(~n - 1);< 216#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#46#return; 207#L25-1 [2021-10-28 08:52:07,564 INFO L793 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret10 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret7 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret9 := fibo1(~n - 1);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#46#return; 207#L25-1 [2021-10-28 08:52:07,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-10-28 08:52:07,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:07,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280148195] [2021-10-28 08:52:07,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:07,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:07,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:52:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:07,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:52:07,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:07,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280148195] [2021-10-28 08:52:07,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280148195] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:07,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:07,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:52:07,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254476326] [2021-10-28 08:52:07,684 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:52:07,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:07,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-10-28 08:52:07,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:07,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921923671] [2021-10-28 08:52:07,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:07,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:07,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:07,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:52:07,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:07,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921923671] [2021-10-28 08:52:07,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921923671] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:07,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:07,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 08:52:07,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183518505] [2021-10-28 08:52:07,782 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:52:07,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:07,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 08:52:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 08:52:07,787 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:52:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:07,867 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-10-28 08:52:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:52:07,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-10-28 08:52:07,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:52:07,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-10-28 08:52:07,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-10-28 08:52:07,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-28 08:52:07,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-10-28 08:52:07,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:07,888 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-10-28 08:52:07,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-10-28 08:52:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-10-28 08:52:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2021-10-28 08:52:07,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-10-28 08:52:07,902 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-28 08:52:07,902 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-28 08:52:07,902 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 08:52:07,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-10-28 08:52:07,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 08:52:07,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:07,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:07,907 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:07,907 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:07,908 INFO L791 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 342#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 360#L39 call main_#t~ret11 := fibo1(main_~x~0);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret7 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret9 := fibo1(~n - 1);< 362#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 386#fibo1FINAL assume true; 385#fibo1EXIT >#46#return; 351#L25-1 [2021-10-28 08:52:07,908 INFO L793 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret10 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret7 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret9 := fibo1(~n - 1);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 351#L25-1 [2021-10-28 08:52:07,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-10-28 08:52:07,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:07,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923927549] [2021-10-28 08:52:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:07,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:07,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:52:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:08,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:08,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923927549] [2021-10-28 08:52:08,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923927549] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:08,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490243187] [2021-10-28 08:52:08,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:08,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:08,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:08,020 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:08,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 08:52:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:08,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:52:08,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:08,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490243187] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:08,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:08,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-28 08:52:08,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267627913] [2021-10-28 08:52:08,189 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:52:08,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-10-28 08:52:08,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:08,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386240925] [2021-10-28 08:52:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:08,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:08,197 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:08,212 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:08,441 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:52:08,442 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:52:08,442 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:52:08,442 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:52:08,442 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:52:08,442 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:08,442 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:52:08,442 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:52:08,443 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2021-10-28 08:52:08,443 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:52:08,443 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:52:08,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:08,516 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:52:08,516 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:52:08,517 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:08,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:08,520 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:08,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:08,529 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:08,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 08:52:08,549 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:08,549 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:08,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:08,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:08,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:08,581 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:08,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:08,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:08,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 08:52:08,604 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:08,604 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:08,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:08,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:08,640 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:08,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:08,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:08,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 08:52:08,668 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:08,668 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:08,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:08,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:08,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:08,708 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:08,711 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:08,711 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:08,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 08:52:08,736 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:08,736 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:08,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:08,771 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:08,776 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:08,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:08,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:08,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 08:52:08,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:08,825 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:08,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:08,826 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:08,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 08:52:08,828 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:52:08,828 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:09,921 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:52:09,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-28 08:52:09,924 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:52:09,924 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:52:09,924 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:52:09,924 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:52:09,924 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:52:09,924 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:09,924 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:52:09,924 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:52:09,924 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2021-10-28 08:52:09,924 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:52:09,924 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:52:09,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:09,928 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:09,931 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:09,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:09,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:09,951 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:09,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:09,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:09,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:10,001 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:52:10,001 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:52:10,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:10,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:10,002 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:10,009 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 [2021-10-28 08:52:10,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:10,017 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:10,018 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:10,018 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:10,018 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:10,018 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:10,019 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:10,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 08:52:10,030 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:10,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-28 08:52:10,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:10,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:10,054 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:10,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 08:52:10,055 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 [2021-10-28 08:52:10,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:10,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:10,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:10,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:10,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:10,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:10,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:10,073 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:10,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:10,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:10,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:10,112 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:10,113 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 [2021-10-28 08:52:10,122 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:10,122 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:10,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:10,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:10,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:10,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 08:52:10,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:10,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:10,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:10,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:10,175 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:10,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:10,176 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:10,177 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 [2021-10-28 08:52:10,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:10,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:10,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:10,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:10,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:10,188 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:10,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:10,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 08:52:10,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:52:10,211 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 08:52:10,211 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:52:10,211 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:10,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:10,213 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:10,214 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:52:10,214 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:52:10,214 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:52:10,214 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-10-28 08:52:10,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 08:52:10,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-28 08:52:10,234 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:52:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:10,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:10,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:52:10,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:10,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 08:52:10,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:10,649 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-10-28 08:52:10,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:52:11,083 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2021-10-28 08:52:11,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-10-28 08:52:11,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 08:52:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-10-28 08:52:11,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-10-28 08:52:11,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:11,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-10-28 08:52:11,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:11,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-10-28 08:52:11,087 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:11,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-10-28 08:52:11,096 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:52:11,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-10-28 08:52:11,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-10-28 08:52:11,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-10-28 08:52:11,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-10-28 08:52:11,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:11,105 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-10-28 08:52:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-10-28 08:52:11,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-10-28 08:52:11,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2021-10-28 08:52:11,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-10-28 08:52:11,126 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-10-28 08:52:11,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:11,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 08:52:11,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 08:52:11,127 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 08:52:11,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:11,291 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2021-10-28 08:52:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 08:52:11,292 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2021-10-28 08:52:11,305 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:52:11,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2021-10-28 08:52:11,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-10-28 08:52:11,318 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-10-28 08:52:11,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2021-10-28 08:52:11,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:11,319 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2021-10-28 08:52:11,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2021-10-28 08:52:11,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-28 08:52:11,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 113 states have internal predecessors, (130), 38 states have call successors, (40), 20 states have call predecessors, (40), 26 states have return successors, (55), 33 states have call predecessors, (55), 36 states have call successors, (55) [2021-10-28 08:52:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2021-10-28 08:52:11,345 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-28 08:52:11,345 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-28 08:52:11,345 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 08:52:11,345 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2021-10-28 08:52:11,347 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:52:11,347 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:11,347 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:11,352 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 08:52:11,352 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:52:11,352 INFO L791 eck$LassoCheckResult]: Stem: 1156#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1157#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 1185#L39 call main_#t~ret11 := fibo1(main_~x~0);< 1219#fibo1ENTRY ~n := #in~n; 1207#L10 assume !(~n < 1); 1202#L12 assume !(1 == ~n); 1165#L15 call #t~ret7 := fibo2(~n - 1);< 1208#fibo2ENTRY ~n := #in~n; 1215#L20 assume !(~n < 1); 1164#L22 assume !(1 == ~n); 1166#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume !(~n < 1); 1247#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume ~n < 1;#res := 0; 1204#fibo2FINAL assume true; 1205#fibo2EXIT >#50#return; 1187#L15-1 call #t~ret8 := fibo2(~n - 2);< 1191#fibo2ENTRY ~n := #in~n; 1315#L20 assume !(~n < 1); 1314#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1251#L10 assume !(~n < 1); 1255#L12 assume 1 == ~n;#res := 1; 1256#fibo1FINAL assume true; 1245#fibo1EXIT >#46#return; 1236#L25-1 call #t~ret10 := fibo1(~n - 2);< 1178#fibo1ENTRY ~n := #in~n; 1241#L10 assume !(~n < 1); 1240#L12 assume !(1 == ~n); 1177#L15 call #t~ret7 := fibo2(~n - 1);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume ~n < 1;#res := 0; 1232#fibo2FINAL assume true; 1239#fibo2EXIT >#50#return; 1176#L15-1 call #t~ret8 := fibo2(~n - 2);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume !(~n < 1); 1227#L22 assume 1 == ~n;#res := 1; 1228#fibo2FINAL assume true; 1304#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-28 08:52:11,353 INFO L793 eck$LassoCheckResult]: Loop: 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-28 08:52:11,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:11,353 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-10-28 08:52:11,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:11,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404231430] [2021-10-28 08:52:11,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:11,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 08:52:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:11,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-28 08:52:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:11,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,676 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-28 08:52:11,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:11,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404231430] [2021-10-28 08:52:11,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404231430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:11,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026368796] [2021-10-28 08:52:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:11,677 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:11,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:11,678 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:11,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 08:52:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:11,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:52:11,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-10-28 08:52:12,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026368796] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:12,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:12,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 21 [2021-10-28 08:52:12,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826570227] [2021-10-28 08:52:12,110 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:52:12,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:12,111 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-10-28 08:52:12,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:12,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47541441] [2021-10-28 08:52:12,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:12,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 08:52:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-28 08:52:12,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:12,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47541441] [2021-10-28 08:52:12,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47541441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:12,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363161717] [2021-10-28 08:52:12,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:12,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:12,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:12,235 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:12,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 08:52:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:52:12,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 08:52:12,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363161717] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:12,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:12,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2021-10-28 08:52:12,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618312813] [2021-10-28 08:52:12,508 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:52:12,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:52:12,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:52:12,509 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2021-10-28 08:52:12,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:12,745 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2021-10-28 08:52:12,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 08:52:12,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2021-10-28 08:52:12,753 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:52:12,757 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2021-10-28 08:52:12,758 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-28 08:52:12,758 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-10-28 08:52:12,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2021-10-28 08:52:12,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:12,759 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-10-28 08:52:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2021-10-28 08:52:12,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2021-10-28 08:52:12,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 115 states have (on average 1.182608695652174) internal successors, (136), 125 states have internal predecessors, (136), 38 states have call successors, (39), 24 states have call predecessors, (39), 31 states have return successors, (63), 34 states have call predecessors, (63), 36 states have call successors, (63) [2021-10-28 08:52:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-10-28 08:52:12,787 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-28 08:52:12,787 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-28 08:52:12,787 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 08:52:12,788 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2021-10-28 08:52:12,790 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 08:52:12,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:12,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:12,792 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:12,792 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:52:12,792 INFO L791 eck$LassoCheckResult]: Stem: 2267#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2268#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2301#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2335#fibo1ENTRY ~n := #in~n; 2323#L10 assume !(~n < 1); 2316#L12 assume !(1 == ~n); 2317#L15 call #t~ret7 := fibo2(~n - 1);< 2326#fibo2ENTRY ~n := #in~n; 2411#L20 assume !(~n < 1); 2410#L22 assume !(1 == ~n); 2310#L25 call #t~ret9 := fibo1(~n - 1);< 2349#fibo1ENTRY ~n := #in~n; 2347#L10 assume !(~n < 1); 2346#L12 assume !(1 == ~n); 2288#L15 call #t~ret7 := fibo2(~n - 1);< 2340#fibo2ENTRY ~n := #in~n; 2369#L20 assume !(~n < 1); 2367#L22 assume !(1 == ~n); 2278#L25 call #t~ret9 := fibo1(~n - 1);< 2349#fibo1ENTRY ~n := #in~n; 2350#L10 assume !(~n < 1); 2378#L12 assume 1 == ~n;#res := 1; 2379#fibo1FINAL assume true; 2441#fibo1EXIT >#46#return; 2287#L25-1 call #t~ret10 := fibo1(~n - 2);< 2289#fibo1ENTRY ~n := #in~n; 2321#L10 assume ~n < 1;#res := 0; 2322#fibo1FINAL assume true; 2450#fibo1EXIT >#48#return; 2293#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2417#fibo2FINAL assume true; 2386#fibo2EXIT >#50#return; 2387#L15-1 [2021-10-28 08:52:12,793 INFO L793 eck$LassoCheckResult]: Loop: 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume !(1 == ~n); 2393#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume !(1 == ~n); 2393#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume 1 == ~n;#res := 1; 2415#fibo2FINAL assume true; 2395#fibo2EXIT >#50#return; 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume ~n < 1;#res := 0; 2412#fibo2FINAL assume true; 2409#fibo2EXIT >#52#return; 2388#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2408#fibo1FINAL assume true; 2400#fibo1EXIT >#46#return; 2391#L25-1 call #t~ret10 := fibo1(~n - 2);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume 1 == ~n;#res := 1; 2415#fibo2FINAL assume true; 2395#fibo2EXIT >#50#return; 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume ~n < 1;#res := 0; 2412#fibo2FINAL assume true; 2409#fibo2EXIT >#52#return; 2388#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2408#fibo1FINAL assume true; 2400#fibo1EXIT >#48#return; 2397#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2394#fibo2FINAL assume true; 2389#fibo2EXIT >#50#return; 2387#L15-1 [2021-10-28 08:52:12,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:12,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-10-28 08:52:12,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:12,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95701452] [2021-10-28 08:52:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:12,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:12,806 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:12,821 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-10-28 08:52:12,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:12,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868247067] [2021-10-28 08:52:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:12,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:52:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:12,983 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-28 08:52:12,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:12,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868247067] [2021-10-28 08:52:12,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868247067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:12,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286099619] [2021-10-28 08:52:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:12,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:12,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:12,986 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:13,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 08:52:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 08:52:13,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 08:52:13,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286099619] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:13,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:13,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-28 08:52:13,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091047666] [2021-10-28 08:52:13,286 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:52:13,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:13,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 08:52:13,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-28 08:52:13,287 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (11), 6 states have call predecessors, (11), 9 states have call successors, (11) [2021-10-28 08:52:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:13,604 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2021-10-28 08:52:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 08:52:13,605 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 154 transitions. [2021-10-28 08:52:13,607 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 08:52:13,609 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 101 states and 126 transitions. [2021-10-28 08:52:13,609 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2021-10-28 08:52:13,609 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2021-10-28 08:52:13,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 126 transitions. [2021-10-28 08:52:13,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:13,610 INFO L681 BuchiCegarLoop]: Abstraction has 101 states and 126 transitions. [2021-10-28 08:52:13,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 126 transitions. [2021-10-28 08:52:13,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2021-10-28 08:52:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.125) internal successors, (72), 66 states have internal predecessors, (72), 18 states have call successors, (18), 14 states have call predecessors, (18), 16 states have return successors, (32), 17 states have call predecessors, (32), 16 states have call successors, (32) [2021-10-28 08:52:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 122 transitions. [2021-10-28 08:52:13,618 INFO L704 BuchiCegarLoop]: Abstraction has 98 states and 122 transitions. [2021-10-28 08:52:13,618 INFO L587 BuchiCegarLoop]: Abstraction has 98 states and 122 transitions. [2021-10-28 08:52:13,618 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 08:52:13,618 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 122 transitions. [2021-10-28 08:52:13,619 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 08:52:13,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:13,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:13,621 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:13,621 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:13,621 INFO L791 eck$LassoCheckResult]: Stem: 2856#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2857#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2880#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2906#fibo1ENTRY ~n := #in~n; 2891#L10 assume !(~n < 1); 2888#L12 assume !(1 == ~n); 2862#L15 call #t~ret7 := fibo2(~n - 1);< 2895#fibo2ENTRY ~n := #in~n; 2935#L20 assume !(~n < 1); 2861#L22 assume !(1 == ~n); 2863#L25 call #t~ret9 := fibo1(~n - 1);< 2877#fibo1ENTRY ~n := #in~n; 2878#L10 assume !(~n < 1); 2929#L12 assume !(1 == ~n); 2900#L15 call #t~ret7 := fibo2(~n - 1);< 2903#fibo2ENTRY ~n := #in~n; 2899#L20 assume !(~n < 1); 2901#L22 assume !(1 == ~n); 2874#L25 call #t~ret9 := fibo1(~n - 1);< 2877#fibo1ENTRY ~n := #in~n; 2879#L10 assume !(~n < 1); 2911#L12 assume 1 == ~n;#res := 1; 2912#fibo1FINAL assume true; 2873#fibo1EXIT >#46#return; 2865#L25-1 call #t~ret10 := fibo1(~n - 2);< 2945#fibo1ENTRY ~n := #in~n; 2890#L10 assume ~n < 1;#res := 0; 2864#fibo1FINAL assume true; 2867#fibo1EXIT >#48#return; 2930#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2927#fibo2FINAL assume true; 2925#fibo2EXIT >#50#return; 2871#L15-1 [2021-10-28 08:52:13,621 INFO L793 eck$LassoCheckResult]: Loop: 2871#L15-1 call #t~ret8 := fibo2(~n - 2);< 2883#fibo2ENTRY ~n := #in~n; 2942#L20 assume !(~n < 1); 2907#L22 assume !(1 == ~n); 2884#L25 call #t~ret9 := fibo1(~n - 1);< 2885#fibo1ENTRY ~n := #in~n; 2916#L10 assume !(~n < 1); 2914#L12 assume !(1 == ~n); 2870#L15 call #t~ret7 := fibo2(~n - 1);< 2894#fibo2ENTRY ~n := #in~n; 2902#L20 assume !(~n < 1); 2907#L22 assume !(1 == ~n); 2884#L25 call #t~ret9 := fibo1(~n - 1);< 2885#fibo1ENTRY ~n := #in~n; 2916#L10 assume !(~n < 1); 2914#L12 assume 1 == ~n;#res := 1; 2915#fibo1FINAL assume true; 2943#fibo1EXIT >#46#return; 2868#L25-1 call #t~ret10 := fibo1(~n - 2);< 2872#fibo1ENTRY ~n := #in~n; 2946#L10 assume ~n < 1;#res := 0; 2917#fibo1FINAL assume true; 2932#fibo1EXIT >#48#return; 2934#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2936#fibo2FINAL assume true; 2924#fibo2EXIT >#50#return; 2871#L15-1 [2021-10-28 08:52:13,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:13,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2021-10-28 08:52:13,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:13,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206907074] [2021-10-28 08:52:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:13,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:13,632 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:13,646 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:13,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:13,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2021-10-28 08:52:13,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:13,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033424495] [2021-10-28 08:52:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:13,647 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:13,653 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:13,659 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:13,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2021-10-28 08:52:13,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:13,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595306626] [2021-10-28 08:52:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:13,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 08:52:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-10-28 08:52:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,789 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-28 08:52:13,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:13,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595306626] [2021-10-28 08:52:13,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595306626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:13,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759475270] [2021-10-28 08:52:13,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:13,790 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:13,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:13,796 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:13,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 08:52:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:13,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 08:52:13,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 08:52:14,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759475270] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:14,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:14,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2021-10-28 08:52:14,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282305116] [2021-10-28 08:52:14,408 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:52:14,408 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:52:14,408 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:52:14,408 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:52:14,409 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:52:14,409 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:14,409 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:52:14,409 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:52:14,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2021-10-28 08:52:14,409 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:52:14,409 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:52:14,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,426 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:14,472 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:52:14,472 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:52:14,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:14,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:14,474 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:14,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:14,475 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:14,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 08:52:14,496 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:14,496 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:14,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:14,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:14,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:14,533 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:14,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:14,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:14,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 08:52:14,556 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:14,556 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=1} Honda state: {fibo1_#t~ret7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:14,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:14,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:14,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:14,593 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:14,599 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:14,599 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:14,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 08:52:14,618 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:14,619 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:14,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:14,654 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:14,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:14,655 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:14,657 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:14,657 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:14,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 08:52:14,667 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:14,667 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:14,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:14,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:14,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:14,692 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:14,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 08:52:14,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:14,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:14,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-10-28 08:52:14,734 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:14,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:14,735 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:14,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 08:52:14,736 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:52:14,736 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:16,027 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:52:16,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:16,030 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:52:16,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:52:16,030 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:52:16,030 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:52:16,030 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:52:16,031 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:16,031 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:52:16,031 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:52:16,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2021-10-28 08:52:16,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:52:16,031 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:52:16,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:16,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:52:16,106 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:52:16,107 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:16,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:16,112 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:16,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 08:52:16,116 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 [2021-10-28 08:52:16,124 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:16,124 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:16,124 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:16,124 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:16,124 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:16,125 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:16,125 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:16,135 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:16,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:16,167 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:16,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:16,172 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:16,176 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 [2021-10-28 08:52:16,185 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:16,185 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:16,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:16,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:16,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:16,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:16,186 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:16,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 08:52:16,203 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:16,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:16,227 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:16,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:16,228 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:16,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 08:52:16,229 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 [2021-10-28 08:52:16,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:16,235 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:16,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:16,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:16,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:16,236 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:16,236 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:16,240 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:16,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-10-28 08:52:16,258 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:16,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:16,259 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:16,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 08:52:16,261 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 [2021-10-28 08:52:16,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:16,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:16,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:16,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:16,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:16,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:16,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:16,269 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:16,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:16,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:16,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:16,289 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:16,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 08:52:16,290 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 [2021-10-28 08:52:16,297 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:16,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:16,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:16,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:16,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:16,298 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:16,298 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:16,300 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:52:16,302 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 08:52:16,302 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:52:16,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:16,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:16,303 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:16,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 08:52:16,304 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:52:16,304 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:52:16,304 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:52:16,304 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-28 08:52:16,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:16,323 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:52:16,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:16,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:52:16,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:16,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:16,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 08:52:16,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:17,107 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 08:52:17,108 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2021-10-28 08:52:17,108 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 98 states and 122 transitions. cyclomatic complexity: 26 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 08:52:17,513 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 98 states and 122 transitions. cyclomatic complexity: 26. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 330 states and 436 transitions. Complement of second has 46 states. [2021-10-28 08:52:17,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2021-10-28 08:52:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 08:52:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2021-10-28 08:52:17,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2021-10-28 08:52:17,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:17,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2021-10-28 08:52:17,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:17,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2021-10-28 08:52:17,520 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:17,520 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 330 states and 436 transitions. [2021-10-28 08:52:17,526 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2021-10-28 08:52:17,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 330 states to 287 states and 389 transitions. [2021-10-28 08:52:17,532 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-10-28 08:52:17,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 190 [2021-10-28 08:52:17,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 389 transitions. [2021-10-28 08:52:17,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:17,535 INFO L681 BuchiCegarLoop]: Abstraction has 287 states and 389 transitions. [2021-10-28 08:52:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 389 transitions. [2021-10-28 08:52:17,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2021-10-28 08:52:17,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 163 states have (on average 1.1533742331288344) internal successors, (188), 170 states have internal predecessors, (188), 53 states have call successors, (54), 35 states have call predecessors, (54), 45 states have return successors, (109), 55 states have call predecessors, (109), 51 states have call successors, (109) [2021-10-28 08:52:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2021-10-28 08:52:17,553 INFO L704 BuchiCegarLoop]: Abstraction has 261 states and 351 transitions. [2021-10-28 08:52:17,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:17,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:52:17,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:52:17,554 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 08:52:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:17,724 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2021-10-28 08:52:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 08:52:17,724 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 146 transitions. [2021-10-28 08:52:17,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 08:52:17,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 119 states and 141 transitions. [2021-10-28 08:52:17,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-10-28 08:52:17,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-10-28 08:52:17,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 141 transitions. [2021-10-28 08:52:17,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:17,729 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 141 transitions. [2021-10-28 08:52:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 141 transitions. [2021-10-28 08:52:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2021-10-28 08:52:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 77 states have internal predecessors, (83), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (33), 20 states have call predecessors, (33), 17 states have call successors, (33) [2021-10-28 08:52:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2021-10-28 08:52:17,735 INFO L704 BuchiCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-10-28 08:52:17,735 INFO L587 BuchiCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-10-28 08:52:17,735 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 08:52:17,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 113 states and 135 transitions. [2021-10-28 08:52:17,737 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 08:52:17,737 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:17,737 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:17,739 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:17,739 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:17,740 INFO L791 eck$LassoCheckResult]: Stem: 4188#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4189#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4208#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4232#fibo1ENTRY ~n := #in~n; 4237#L10 assume !(~n < 1); 4244#L12 assume !(1 == ~n); 4218#L15 call #t~ret7 := fibo2(~n - 1);< 4243#fibo2ENTRY ~n := #in~n; 4271#L20 assume !(~n < 1); 4269#L22 assume !(1 == ~n); 4205#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4206#L10 assume !(~n < 1); 4220#L12 assume !(1 == ~n); 4194#L15 call #t~ret7 := fibo2(~n - 1);< 4225#fibo2ENTRY ~n := #in~n; 4227#L20 assume !(~n < 1); 4193#L22 assume !(1 == ~n); 4195#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4206#L10 assume !(~n < 1); 4220#L12 assume !(1 == ~n); 4194#L15 call #t~ret7 := fibo2(~n - 1);< 4225#fibo2ENTRY ~n := #in~n; 4227#L20 assume !(~n < 1); 4193#L22 assume !(1 == ~n); 4195#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4207#L10 assume !(~n < 1); 4238#L12 assume 1 == ~n;#res := 1; 4239#fibo1FINAL assume true; 4276#fibo1EXIT >#46#return; 4273#L25-1 call #t~ret10 := fibo1(~n - 2);< 4274#fibo1ENTRY ~n := #in~n; 4277#L10 assume ~n < 1;#res := 0; 4275#fibo1FINAL assume true; 4272#fibo1EXIT >#48#return; 4270#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4268#fibo2FINAL assume true; 4265#fibo2EXIT >#50#return; 4191#L15-1 call #t~ret8 := fibo2(~n - 2);< 4229#fibo2ENTRY ~n := #in~n; 4226#L20 assume ~n < 1;#res := 0; 4192#fibo2FINAL assume true; 4221#fibo2EXIT >#52#return; 4260#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4256#fibo1FINAL assume true; 4253#fibo1EXIT >#46#return; 4211#L25-1 [2021-10-28 08:52:17,740 INFO L793 eck$LassoCheckResult]: Loop: 4211#L25-1 call #t~ret10 := fibo1(~n - 2);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume !(1 == ~n); 4215#L15 call #t~ret7 := fibo2(~n - 1);< 4236#fibo2ENTRY ~n := #in~n; 4235#L20 assume !(~n < 1); 4233#L22 assume !(1 == ~n); 4213#L25 call #t~ret9 := fibo1(~n - 1);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume !(1 == ~n); 4215#L15 call #t~ret7 := fibo2(~n - 1);< 4236#fibo2ENTRY ~n := #in~n; 4235#L20 assume !(~n < 1); 4233#L22 assume !(1 == ~n); 4213#L25 call #t~ret9 := fibo1(~n - 1);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume 1 == ~n;#res := 1; 4241#fibo1FINAL assume true; 4267#fibo1EXIT >#46#return; 4202#L25-1 call #t~ret10 := fibo1(~n - 2);< 4201#fibo1ENTRY ~n := #in~n; 4203#L10 assume ~n < 1;#res := 0; 4246#fibo1FINAL assume true; 4300#fibo1EXIT >#48#return; 4266#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4264#fibo2FINAL assume true; 4263#fibo2EXIT >#50#return; 4258#L15-1 call #t~ret8 := fibo2(~n - 2);< 4259#fibo2ENTRY ~n := #in~n; 4296#L20 assume ~n < 1;#res := 0; 4292#fibo2FINAL assume true; 4290#fibo2EXIT >#52#return; 4255#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4254#fibo1FINAL assume true; 4252#fibo1EXIT >#46#return; 4211#L25-1 [2021-10-28 08:52:17,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2021-10-28 08:52:17,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:17,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286261839] [2021-10-28 08:52:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:17,741 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:52:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:17,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:17,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:17,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:52:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 08:52:17,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:17,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286261839] [2021-10-28 08:52:17,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286261839] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:17,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956826881] [2021-10-28 08:52:17,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:17,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:17,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:17,901 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:17,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-28 08:52:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:52:18,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 08:52:18,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956826881] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:18,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:18,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-28 08:52:18,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009734059] [2021-10-28 08:52:18,268 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:52:18,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2021-10-28 08:52:18,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:18,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667033235] [2021-10-28 08:52:18,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:18,273 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:18,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:52:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 08:52:18,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:18,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667033235] [2021-10-28 08:52:18,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667033235] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:18,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464622557] [2021-10-28 08:52:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:18,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:18,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:18,372 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:18,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-28 08:52:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:52:18,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:18,738 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 08:52:18,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464622557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:18,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:18,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-10-28 08:52:18,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561578677] [2021-10-28 08:52:18,739 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:52:18,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:18,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 08:52:18,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 08:52:18,740 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. cyclomatic complexity: 24 Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 08:52:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:18,872 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2021-10-28 08:52:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:52:18,873 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 141 transitions. [2021-10-28 08:52:18,875 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 08:52:18,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 117 states and 137 transitions. [2021-10-28 08:52:18,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 102 [2021-10-28 08:52:18,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 102 [2021-10-28 08:52:18,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 137 transitions. [2021-10-28 08:52:18,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:18,877 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 137 transitions. [2021-10-28 08:52:18,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 137 transitions. [2021-10-28 08:52:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2021-10-28 08:52:18,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.105263157894737) internal successors, (84), 78 states have internal predecessors, (84), 19 states have call successors, (19), 16 states have call predecessors, (19), 20 states have return successors, (32), 20 states have call predecessors, (32), 17 states have call successors, (32) [2021-10-28 08:52:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2021-10-28 08:52:18,883 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 135 transitions. [2021-10-28 08:52:18,883 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 135 transitions. [2021-10-28 08:52:18,883 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 08:52:18,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 135 transitions. [2021-10-28 08:52:18,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 08:52:18,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:18,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:18,886 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:18,887 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 08:52:18,887 INFO L791 eck$LassoCheckResult]: Stem: 4831#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4832#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4852#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4875#fibo1ENTRY ~n := #in~n; 4886#L10 assume !(~n < 1); 4884#L12 assume !(1 == ~n); 4881#L15 call #t~ret7 := fibo2(~n - 1);< 4882#fibo2ENTRY ~n := #in~n; 4900#L20 assume !(~n < 1); 4898#L22 assume !(1 == ~n); 4848#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4849#L10 assume !(~n < 1); 4864#L12 assume !(1 == ~n); 4837#L15 call #t~ret7 := fibo2(~n - 1);< 4869#fibo2ENTRY ~n := #in~n; 4871#L20 assume !(~n < 1); 4836#L22 assume !(1 == ~n); 4838#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4849#L10 assume !(~n < 1); 4864#L12 assume !(1 == ~n); 4837#L15 call #t~ret7 := fibo2(~n - 1);< 4869#fibo2ENTRY ~n := #in~n; 4871#L20 assume !(~n < 1); 4836#L22 assume !(1 == ~n); 4838#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4850#L10 assume !(~n < 1); 4891#L12 assume 1 == ~n;#res := 1; 4892#fibo1FINAL assume true; 4851#fibo1EXIT >#46#return; 4842#L25-1 call #t~ret10 := fibo1(~n - 2);< 4843#fibo1ENTRY ~n := #in~n; 4940#L10 assume ~n < 1;#res := 0; 4939#fibo1FINAL assume true; 4938#fibo1EXIT >#48#return; 4861#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4862#fibo2FINAL assume true; 4935#fibo2EXIT >#50#return; 4903#L15-1 call #t~ret8 := fibo2(~n - 2);< 4904#fibo2ENTRY ~n := #in~n; 4914#L20 assume !(~n < 1); 4910#L22 assume 1 == ~n;#res := 1; 4907#fibo2FINAL assume true; 4902#fibo2EXIT >#52#return; 4901#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4899#fibo1FINAL assume true; 4897#fibo1EXIT >#46#return; 4859#L25-1 [2021-10-28 08:52:18,887 INFO L793 eck$LassoCheckResult]: Loop: 4859#L25-1 call #t~ret10 := fibo1(~n - 2);< 4890#fibo1ENTRY ~n := #in~n; 4945#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume !(1 == ~n); 4853#L25 call #t~ret9 := fibo1(~n - 1);< 4856#fibo1ENTRY ~n := #in~n; 4895#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume !(1 == ~n); 4853#L25 call #t~ret9 := fibo1(~n - 1);< 4856#fibo1ENTRY ~n := #in~n; 4895#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume 1 == ~n;#res := 1; 4865#fibo2FINAL assume true; 4866#fibo2EXIT >#50#return; 4857#L15-1 call #t~ret8 := fibo2(~n - 2);< 4860#fibo2ENTRY ~n := #in~n; 4936#L20 assume ~n < 1;#res := 0; 4926#fibo2FINAL assume true; 4872#fibo2EXIT >#52#return; 4874#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4876#fibo1FINAL assume true; 4887#fibo1EXIT >#46#return; 4888#L25-1 call #t~ret10 := fibo1(~n - 2);< 4942#fibo1ENTRY ~n := #in~n; 4944#L10 assume ~n < 1;#res := 0; 4941#fibo1FINAL assume true; 4917#fibo1EXIT >#48#return; 4916#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4915#fibo2FINAL assume true; 4913#fibo2EXIT >#50#return; 4873#L15-1 call #t~ret8 := fibo2(~n - 2);< 4909#fibo2ENTRY ~n := #in~n; 4925#L20 assume !(~n < 1); 4923#L22 assume 1 == ~n;#res := 1; 4921#fibo2FINAL assume true; 4908#fibo2EXIT >#52#return; 4906#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4905#fibo1FINAL assume true; 4896#fibo1EXIT >#46#return; 4859#L25-1 [2021-10-28 08:52:18,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:18,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2021-10-28 08:52:18,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:18,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166103580] [2021-10-28 08:52:18,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:18,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:18,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 08:52:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:52:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,049 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 08:52:19,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:19,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166103580] [2021-10-28 08:52:19,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166103580] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:19,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448857164] [2021-10-28 08:52:19,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:19,050 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:19,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:19,056 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:19,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-28 08:52:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 08:52:19,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 08:52:19,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448857164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:19,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:19,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-28 08:52:19,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134339990] [2021-10-28 08:52:19,461 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 08:52:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2021-10-28 08:52:19,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:19,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489603388] [2021-10-28 08:52:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:19,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 08:52:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:19,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:52:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-10-28 08:52:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-28 08:52:19,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:19,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489603388] [2021-10-28 08:52:19,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489603388] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:19,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366807785] [2021-10-28 08:52:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:19,583 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:19,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:19,589 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:19,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-28 08:52:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:19,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 08:52:19,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:19,970 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 08:52:19,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366807785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:19,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:19,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-10-28 08:52:19,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295068625] [2021-10-28 08:52:19,971 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 08:52:19,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:19,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 08:52:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-10-28 08:52:19,973 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. cyclomatic complexity: 22 Second operand has 18 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 10 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-28 08:52:20,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:20,295 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-10-28 08:52:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 08:52:20,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 130 transitions. [2021-10-28 08:52:20,297 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 08:52:20,298 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 89 states and 95 transitions. [2021-10-28 08:52:20,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-10-28 08:52:20,299 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-28 08:52:20,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2021-10-28 08:52:20,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 08:52:20,299 INFO L681 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 08:52:20,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2021-10-28 08:52:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-10-28 08:52:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 16 states have call successors, (16), 13 states have call predecessors, (16), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-10-28 08:52:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-10-28 08:52:20,304 INFO L704 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 08:52:20,304 INFO L587 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 08:52:20,304 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 08:52:20,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2021-10-28 08:52:20,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 08:52:20,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 08:52:20,305 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 08:52:20,306 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:20,306 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:20,306 INFO L791 eck$LassoCheckResult]: Stem: 5582#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5583#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 5601#L39 call main_#t~ret11 := fibo1(main_~x~0);< 5622#fibo1ENTRY ~n := #in~n; 5626#L10 assume !(~n < 1); 5648#L12 assume !(1 == ~n); 5588#L15 call #t~ret7 := fibo2(~n - 1);< 5616#fibo2ENTRY ~n := #in~n; 5619#L20 assume !(~n < 1); 5587#L22 assume !(1 == ~n); 5589#L25 call #t~ret9 := fibo1(~n - 1);< 5597#fibo1ENTRY ~n := #in~n; 5599#L10 assume !(~n < 1); 5613#L12 assume !(1 == ~n); 5593#L15 call #t~ret7 := fibo2(~n - 1);< 5646#fibo2ENTRY ~n := #in~n; 5644#L20 assume !(~n < 1); 5642#L22 assume !(1 == ~n); 5598#L25 call #t~ret9 := fibo1(~n - 1);< 5597#fibo1ENTRY ~n := #in~n; 5600#L10 assume !(~n < 1); 5611#L12 assume 1 == ~n;#res := 1; 5612#fibo1FINAL assume true; 5670#fibo1EXIT >#46#return; 5591#L25-1 call #t~ret10 := fibo1(~n - 2);< 5594#fibo1ENTRY ~n := #in~n; 5596#L10 assume ~n < 1;#res := 0; 5590#fibo1FINAL assume true; 5592#fibo1EXIT >#48#return; 5595#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 5602#fibo2FINAL assume true; 5614#fibo2EXIT >#50#return; 5585#L15-1 call #t~ret8 := fibo2(~n - 2);< 5637#fibo2ENTRY ~n := #in~n; 5656#L20 assume !(~n < 1); 5584#L22 assume 1 == ~n;#res := 1; 5586#fibo2FINAL assume true; 5636#fibo2EXIT >#52#return; 5634#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5633#fibo1FINAL assume true; 5631#fibo1EXIT >#46#return; 5607#L25-1 call #t~ret10 := fibo1(~n - 2);< 5628#fibo1ENTRY ~n := #in~n; 5669#L10 assume !(~n < 1); 5623#L12 [2021-10-28 08:52:20,307 INFO L793 eck$LassoCheckResult]: Loop: 5623#L12 assume !(1 == ~n); 5609#L15 call #t~ret7 := fibo2(~n - 1);< 5615#fibo2ENTRY ~n := #in~n; 5657#L20 assume !(~n < 1); 5654#L22 assume !(1 == ~n); 5604#L25 call #t~ret9 := fibo1(~n - 1);< 5610#fibo1ENTRY ~n := #in~n; 5625#L10 assume !(~n < 1); 5623#L12 [2021-10-28 08:52:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2021-10-28 08:52:20,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:20,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643527319] [2021-10-28 08:52:20,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:20,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:20,340 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:20,353 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:20,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2021-10-28 08:52:20,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:20,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711173791] [2021-10-28 08:52:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:20,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:20,359 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:20,361 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:20,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:20,362 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2021-10-28 08:52:20,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:20,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331230963] [2021-10-28 08:52:20,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:20,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 08:52:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:20,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 08:52:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 08:52:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:20,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 08:52:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 08:52:20,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:20,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331230963] [2021-10-28 08:52:20,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331230963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:20,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804739625] [2021-10-28 08:52:20,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:52:20,465 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:20,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:20,472 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:20,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-28 08:52:20,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 08:52:20,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:52:20,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 08:52:20,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 08:52:20,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804739625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 08:52:20,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:52:20,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-28 08:52:20,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986934620] [2021-10-28 08:52:21,051 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:52:21,051 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:52:21,052 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:52:21,052 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:52:21,052 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 08:52:21,052 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,052 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:52:21,052 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:52:21,052 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2021-10-28 08:52:21,052 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:52:21,053 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:52:21,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,074 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:21,143 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:52:21,143 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 08:52:21,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,144 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 08:52:21,145 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:21,145 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:21,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:21,153 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:21,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:21,172 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,173 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 08:52:21,175 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:21,175 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:21,188 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:21,188 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:21,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:21,207 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,208 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 08:52:21,209 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:21,209 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:21,219 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:21,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:21,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-28 08:52:21,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,239 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 08:52:21,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:21,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:21,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:21,248 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:21,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:21,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,267 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 08:52:21,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:21,269 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:21,276 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:21,276 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:21,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:21,295 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,296 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 08:52:21,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:21,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:21,304 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:21,305 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:21,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:21,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,324 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 08:52:21,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:21,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:21,334 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 08:52:21,334 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 08:52:21,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-10-28 08:52:21,353 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,354 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 08:52:21,355 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 08:52:21,355 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:21,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:21,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:21,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:21,395 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:21,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 08:52:21,396 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 08:52:21,397 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 08:52:22,315 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 08:52:22,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-10-28 08:52:22,318 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 08:52:22,318 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 08:52:22,318 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 08:52:22,318 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 08:52:22,318 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 08:52:22,318 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,318 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 08:52:22,318 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 08:52:22,318 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2021-10-28 08:52:22,318 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 08:52:22,318 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 08:52:22,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 08:52:22,387 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 08:52:22,387 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 08:52:22,387 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,388 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 08:52:22,392 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 [2021-10-28 08:52:22,398 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:22,398 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:22,399 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:22,399 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:22,399 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:22,399 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:22,399 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:22,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:22,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:22,419 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,419 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-28 08:52:22,420 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 [2021-10-28 08:52:22,427 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:22,427 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:22,427 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:22,427 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:22,428 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:22,428 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:22,428 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:22,429 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:22,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:22,448 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,448 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-28 08:52:22,449 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 [2021-10-28 08:52:22,456 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:22,456 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:22,456 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:22,456 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:22,456 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:22,457 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:22,457 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:22,458 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:22,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-10-28 08:52:22,476 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,477 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-28 08:52:22,478 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 [2021-10-28 08:52:22,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:22,485 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:22,485 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:22,485 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:22,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:22,486 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:22,486 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:22,487 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:22,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:22,505 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,506 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-28 08:52:22,509 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 [2021-10-28 08:52:22,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:22,516 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:22,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:22,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:22,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:22,517 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:22,517 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:22,518 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:22,536 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-10-28 08:52:22,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,537 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-28 08:52:22,553 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 [2021-10-28 08:52:22,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:22,560 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:22,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:22,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:22,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:22,561 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:22,561 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:22,562 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:22,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-10-28 08:52:22,580 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,581 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-28 08:52:22,582 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 [2021-10-28 08:52:22,589 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:22,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:22,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:22,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:22,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:22,589 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:22,589 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:22,590 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 08:52:22,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:22,609 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,609 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-28 08:52:22,610 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 [2021-10-28 08:52:22,617 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 08:52:22,617 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 08:52:22,617 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 08:52:22,617 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 08:52:22,618 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 08:52:22,619 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 08:52:22,619 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 08:52:22,637 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 08:52:22,639 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 08:52:22,639 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 08:52:22,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 08:52:22,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:22,653 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:22,654 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 08:52:22,654 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 08:52:22,654 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 08:52:22,654 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-28 08:52:22,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-28 08:52:22,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:22,687 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 08:52:22,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:22,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:52:22,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:23,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:23,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:52:23,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:23,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:23,350 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-28 08:52:23,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:52:23,422 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2021-10-28 08:52:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 08:52:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:52:23,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-10-28 08:52:23,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 08:52:23,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:23,424 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:52:23,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:23,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:52:23,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:23,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:52:23,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:24,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:24,048 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-28 08:52:24,049 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:52:24,123 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2021-10-28 08:52:24,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 08:52:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:52:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-10-28 08:52:24,124 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 08:52:24,125 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:24,125 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 08:52:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:24,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 08:52:24,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:24,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 08:52:24,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:24,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:24,780 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-28 08:52:24,780 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:52:24,904 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 135 states and 146 transitions. Complement of second has 23 states. [2021-10-28 08:52:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 08:52:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:52:24,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2021-10-28 08:52:24,906 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 08:52:24,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:24,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2021-10-28 08:52:24,907 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:24,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2021-10-28 08:52:24,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 08:52:24,908 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2021-10-28 08:52:24,910 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:52:24,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2021-10-28 08:52:24,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 08:52:24,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 08:52:24,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 08:52:24,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:52:24,911 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:52:24,911 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:52:24,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:24,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 08:52:24,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 08:52:24,914 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 08:52:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:24,914 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 08:52:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:52:24,915 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 08:52:24,915 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:52:24,915 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:52:24,915 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 08:52:24,915 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 08:52:24,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 08:52:24,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 08:52:24,916 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:52:24,916 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:52:24,916 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:52:24,916 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 08:52:24,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:52:24,916 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 08:52:24,916 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 08:52:24,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 08:52:24 BoogieIcfgContainer [2021-10-28 08:52:24,922 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 08:52:24,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:52:24,923 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:52:24,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:52:24,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:04" (3/4) ... [2021-10-28 08:52:24,926 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:52:24,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:52:24,928 INFO L168 Benchmark]: Toolchain (without parser) took 20969.68 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 76.7 MB in the beginning and 73.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 55.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,928 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory is still 93.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:24,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.35 ms. Allocated memory is still 115.3 MB. Free memory was 76.6 MB in the beginning and 90.2 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.04 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 89.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,930 INFO L168 Benchmark]: Boogie Preprocessor took 18.04 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 88.1 MB in the end (delta: 947.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:24,930 INFO L168 Benchmark]: RCFGBuilder took 274.50 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 78.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,930 INFO L168 Benchmark]: BuchiAutomizer took 20357.77 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 78.6 MB in the beginning and 73.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 58.8 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:24,931 INFO L168 Benchmark]: Witness Printer took 3.98 ms. Allocated memory is still 167.8 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:24,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 115.3 MB. Free memory is still 93.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.35 ms. Allocated memory is still 115.3 MB. Free memory was 76.6 MB in the beginning and 90.2 MB in the end (delta: -13.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.04 ms. Allocated memory is still 115.3 MB. Free memory was 90.2 MB in the beginning and 89.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.04 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 88.1 MB in the end (delta: 947.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 274.50 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 78.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 20357.77 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 78.6 MB in the beginning and 73.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 58.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.98 ms. Allocated memory is still 167.8 MB. Free memory is still 73.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (8 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 20.3s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 13.6s. Construction of modules took 1.2s. Büchi inclusion checks took 5.0s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 98 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 184 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 244 SDtfs, 525 SDslu, 839 SDs, 0 SdLazy, 1958 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf91 lsp90 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf91 smp86 dnf100 smp100 tf109 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 08:52:24,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:25,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:25,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-28 08:52:25,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:25,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-28 08:52:25,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-28 08:52:26,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-28 08:52:26,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:26,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-28 08:52:26,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 08:52:26,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc7b07b5-9615-49d2-a078-475327946cd1/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...