./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt --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 fe4c237d03da6bf7a86f5cd898d20e467d10d950 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:56:54,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:56:54,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:56:54,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:56:54,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:56:54,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:56:54,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:56:54,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:56:54,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:56:54,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:56:54,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:56:54,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:56:54,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:56:54,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:56:54,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:56:54,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:56:54,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:56:54,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:56:54,469 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:56:54,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:56:54,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:56:54,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:56:54,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:56:54,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:56:54,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:56:54,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:56:54,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:56:54,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:56:54,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:56:54,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:56:54,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:56:54,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:56:54,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:56:54,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:56:54,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:56:54,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:56:54,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:56:54,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:56:54,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:56:54,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:56:54,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:56:54,512 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-13 00:56:54,561 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:56:54,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:56:54,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:56:54,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:56:54,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:56:54,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:56:54,564 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:56:54,565 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:56:54,565 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:56:54,565 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:56:54,566 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:56:54,566 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:56:54,567 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:56:54,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:56:54,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:56:54,567 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:56:54,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:56:54,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:56:54,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:56:54,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:56:54,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:56:54,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:56:54,569 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:56:54,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:56:54,569 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:56:54,569 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:56:54,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:56:54,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:56:54,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:56:54,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:56:54,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:56:54,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:56:54,574 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:56:54,574 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_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4c237d03da6bf7a86f5cd898d20e467d10d950 [2021-10-13 00:56:54,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:56:54,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:56:54,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:56:54,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:56:54,937 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:56:54,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2021-10-13 00:56:55,019 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/data/b71f80896/a4361085051245778c021b15c81cea6d/FLAGc57579434 [2021-10-13 00:56:55,595 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:56:55,595 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c [2021-10-13 00:56:55,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/data/b71f80896/a4361085051245778c021b15c81cea6d/FLAGc57579434 [2021-10-13 00:56:55,967 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/data/b71f80896/a4361085051245778c021b15c81cea6d [2021-10-13 00:56:55,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:56:55,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:56:55,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:56:55,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:56:55,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:56:55,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:56:55" (1/1) ... [2021-10-13 00:56:55,985 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae301c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:55, skipping insertion in model container [2021-10-13 00:56:55,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:56:55" (1/1) ... [2021-10-13 00:56:55,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:56:56,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:56:56,192 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_365532da-b39d-4735-abb1-5555f46e5143/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2021-10-13 00:56:56,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:56:56,204 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:56:56,222 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_365532da-b39d-4735-abb1-5555f46e5143/sv-benchmarks/c/recursive-simple/fibo_2calls_8-1.c[947,960] [2021-10-13 00:56:56,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:56:56,238 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:56:56,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56 WrapperNode [2021-10-13 00:56:56,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:56:56,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:56:56,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:56:56,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:56:56,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:56:56,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:56:56,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:56:56,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:56:56,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:56:56,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:56:56,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:56:56,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:56:56,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (1/1) ... [2021-10-13 00:56:56,312 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:56,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:56,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:56,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:56:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:56:56,389 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-10-13 00:56:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-10-13 00:56:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:56:56,390 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-10-13 00:56:56,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-10-13 00:56:56,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:56:56,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:56:56,602 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:56:56,603 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 00:56:56,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:56 BoogieIcfgContainer [2021-10-13 00:56:56,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:56:56,607 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:56:56,607 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:56:56,611 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:56:56,612 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:56:56,612 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:56:55" (1/3) ... [2021-10-13 00:56:56,614 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e51e8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:56:56, skipping insertion in model container [2021-10-13 00:56:56,614 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:56:56,614 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:56:56" (2/3) ... [2021-10-13 00:56:56,615 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1e51e8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:56:56, skipping insertion in model container [2021-10-13 00:56:56,615 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:56:56,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:56" (3/3) ... [2021-10-13 00:56:56,617 INFO L389 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-1.c [2021-10-13 00:56:56,685 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:56:56,685 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:56:56,685 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:56:56,686 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:56:56,686 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:56:56,686 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:56:56,686 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:56:56,686 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:56:56,734 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) [2021-10-13 00:56:56,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-13 00:56:56,760 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:56:56,760 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:56:56,768 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:56:56,768 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:56,768 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:56:56,769 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) [2021-10-13 00:56:56,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-13 00:56:56,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:56:56,773 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:56:56,774 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 00:56:56,774 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:56,781 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 := 8; 15#L39true call main_#t~ret11 := fibo1(main_~x~0);< 5#fibo1ENTRYtrue [2021-10-13 00:56:56,782 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 [2021-10-13 00:56:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:56,794 INFO L82 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-10-13 00:56:56,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:56,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466391235] [2021-10-13 00:56:56,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:56,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:56,917 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:56:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:56,957 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:56:56,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:56,961 INFO L82 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-10-13 00:56:56,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:56,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84241573] [2021-10-13 00:56:56,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:56,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:56,971 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:56:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:56,981 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:56:56,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-10-13 00:56:56,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:56,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836316012] [2021-10-13 00:56:56,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:56,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:57,006 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:56:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:57,032 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:56:57,271 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:56:57,272 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:56:57,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:56:57,273 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:56:57,273 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:56:57,273 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,273 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:56:57,274 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:56:57,274 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2021-10-13 00:56:57,274 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:56:57,274 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:56:57,291 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,323 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,328 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,331 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,333 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,341 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:57,418 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:56:57,418 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:56:57,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,446 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,446 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 00:56:57,469 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:56:57,469 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:56:57,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:57,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 00:56:57,537 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:56:57,537 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:56:57,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:57,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,578 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,585 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,585 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 00:56:57,609 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:56:57,609 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:56:57,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:57,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,648 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,655 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 00:56:57,685 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:56:57,685 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:56:57,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:57,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 00:56:57,757 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:56:57,757 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:56:57,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:57,801 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,802 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 00:56:57,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,805 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,822 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:56:57,823 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:56:57,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:57,846 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 00:56:57,881 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:56:57,881 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:56:57,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:57,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,906 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 00:56:57,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,923 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:56:57,924 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:56:57,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:57,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:57,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:57,948 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:57,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 00:56:57,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:56:57,958 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:57,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,004 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 00:56:58,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:56:58,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:56:58,075 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:56:58,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,079 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:56:58,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:56:58,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:56:58,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:56:58,079 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:56:58,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,079 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:56:58,079 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:56:58,079 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration1_Loop [2021-10-13 00:56:58,079 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:56:58,079 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:56:58,081 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,116 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:56:58,176 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:56:58,180 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:56:58,182 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,183 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,192 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 [2021-10-13 00:56:58,209 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,209 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,210 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,210 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,210 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 00:56:58,221 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:56:58,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,265 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,273 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 [2021-10-13 00:56:58,282 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,282 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,282 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,282 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,282 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,284 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,284 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 00:56:58,298 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:56:58,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,337 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 [2021-10-13 00:56:58,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 00:56:58,346 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,346 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,346 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,347 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,347 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,347 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,348 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,352 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:56:58,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,374 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 00:56:58,379 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 [2021-10-13 00:56:58,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,392 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:56:58,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-10-13 00:56:58,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 00:56:58,421 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 [2021-10-13 00:56:58,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,429 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,429 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,431 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:56:58,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,452 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 00:56:58,454 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 [2021-10-13 00:56:58,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,462 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,462 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,462 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:56:58,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,487 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 00:56:58,491 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:56:58,498 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,499 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,499 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,499 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,499 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,499 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,500 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,508 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:56:58,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,529 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 00:56:58,535 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 [2021-10-13 00:56:58,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,544 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:56:58,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,617 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,630 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 [2021-10-13 00:56:58,639 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:56:58,639 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:56:58,639 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:56:58,639 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:56:58,640 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:56:58,641 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:56:58,641 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:56:58,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 00:56:58,661 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:56:58,665 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 00:56:58,665 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:56:58,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:56:58,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:58,668 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:56:58,697 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:56:58,697 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:56:58,697 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:56:58,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 00:56:58,698 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-10-13 00:56:58,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:58,722 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:56:58,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:58,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:56:58,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:56:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:58,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:56:58,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:56:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:58,919 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 [2021-10-13 00:56:58,920 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) [2021-10-13 00:56:59,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:56:59,172 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. [2021-10-13 00:56:59,173 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 [2021-10-13 00:56:59,175 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) [2021-10-13 00:56:59,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-10-13 00:56:59,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-13 00:56:59,181 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:56:59,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-13 00:56:59,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:56:59,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-10-13 00:56:59,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:56:59,184 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-10-13 00:56:59,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-13 00:56:59,220 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-10-13 00:56:59,221 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-13 00:56:59,222 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-13 00:56:59,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-10-13 00:56:59,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:56:59,226 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-10-13 00:56:59,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-10-13 00:56:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-13 00:56:59,265 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) [2021-10-13 00:56:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-10-13 00:56:59,269 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-13 00:56:59,269 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-13 00:56:59,269 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:56:59,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-10-13 00:56:59,275 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-13 00:56:59,275 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:56:59,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:56:59,278 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:59,278 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:59,278 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 := 8; 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 [2021-10-13 00:56:59,278 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 [2021-10-13 00:56:59,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-10-13 00:56:59,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:59,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065663752] [2021-10-13 00:56:59,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:59,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-13 00:56:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:56:59,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:59,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065663752] [2021-10-13 00:56:59,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065663752] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:59,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:59,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:56:59,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536259819] [2021-10-13 00:56:59,476 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:56:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:59,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-10-13 00:56:59,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:59,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213325418] [2021-10-13 00:56:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:59,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:56:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:56:59,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:59,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213325418] [2021-10-13 00:56:59,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213325418] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:56:59,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:56:59,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:56:59,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266707801] [2021-10-13 00:56:59,560 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:56:59,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:56:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:56:59,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:56:59,565 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) [2021-10-13 00:56:59,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:56:59,636 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-10-13 00:56:59,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:56:59,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-10-13 00:56:59,645 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-13 00:56:59,649 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-10-13 00:56:59,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-10-13 00:56:59,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-13 00:56:59,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-10-13 00:56:59,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:56:59,652 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-10-13 00:56:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-10-13 00:56:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-10-13 00:56:59,667 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) [2021-10-13 00:56:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-10-13 00:56:59,669 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-13 00:56:59,669 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-13 00:56:59,669 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:56:59,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-10-13 00:56:59,670 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-13 00:56:59,670 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:56:59,671 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:56:59,672 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:59,672 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:56:59,673 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 := 8; 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 [2021-10-13 00:56:59,673 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 [2021-10-13 00:56:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:59,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-10-13 00:56:59,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:59,674 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561867533] [2021-10-13 00:56:59,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:59,675 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-13 00:56:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:59,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:56:59,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561867533] [2021-10-13 00:56:59,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561867533] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:56:59,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536592663] [2021-10-13 00:56:59,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:59,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:56:59,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:56:59,781 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:56:59,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 00:56:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:56:59,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:56:59,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:56:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:56:59,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536592663] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:56:59,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:56:59,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-13 00:56:59,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529551115] [2021-10-13 00:56:59,943 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:56:59,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:56:59,944 INFO L82 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-10-13 00:56:59,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:56:59,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173384724] [2021-10-13 00:56:59,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:56:59,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:56:59,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:59,953 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:56:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:56:59,966 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:57:00,208 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:00,208 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:00,208 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:00,208 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:00,209 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:57:00,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:00,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:00,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:00,211 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2021-10-13 00:57:00,211 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:00,211 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:00,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:00,297 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:00,298 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:57:00,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:00,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:00,300 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:00,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 00:57:00,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:00,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:00,329 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:00,329 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:00,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:00,365 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:00,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:00,366 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:00,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:00,369 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:00,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 00:57:00,393 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:00,393 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:00,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-10-13 00:57:00,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:00,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:00,425 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:00,428 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:00,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:00,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 00:57:00,457 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:00,457 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:00,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:00,477 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:00,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:00,479 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:00,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 00:57:00,484 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:00,497 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:00,521 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:00,521 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:00,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-13 00:57:00,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:00,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:00,555 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:00,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:00,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:00,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 00:57:00,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:00,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:00,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:00,649 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:00,652 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:57:00,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:00,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 00:57:01,824 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:57:01,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-13 00:57:01,827 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:01,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:01,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:01,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:01,827 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:57:01,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:01,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:01,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:01,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration3_Loop [2021-10-13 00:57:01,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:01,827 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:01,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,857 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:01,911 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:01,911 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:57:01,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:01,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:01,912 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:01,921 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 [2021-10-13 00:57:01,930 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:01,931 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:01,931 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:01,931 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:01,931 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:01,932 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:01,932 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:01,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 00:57:01,944 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:01,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:01,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:01,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:01,981 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:01,983 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 [2021-10-13 00:57:01,992 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:01,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:01,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:01,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:01,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:01,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:01,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:01,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 00:57:02,005 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:02,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:02,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:02,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:02,038 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:02,040 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 [2021-10-13 00:57:02,049 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:02,049 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:02,049 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:02,049 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:02,049 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:02,050 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:02,050 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:02,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 00:57:02,072 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:02,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:02,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:02,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:02,110 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:02,112 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 [2021-10-13 00:57:02,121 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:02,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:02,122 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:02,122 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:02,122 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:02,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:02,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:02,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-13 00:57:02,140 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:57:02,144 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 00:57:02,145 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:57:02,145 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:02,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:02,147 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:02,148 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:57:02,148 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:57:02,148 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:57:02,148 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-10-13 00:57:02,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-13 00:57:02,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-13 00:57:02,170 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:57:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:02,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:57:02,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:02,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:57:02,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:02,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:02,604 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 [2021-10-13 00:57:02,604 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) [2021-10-13 00:57:03,045 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. [2021-10-13 00:57:03,046 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 [2021-10-13 00:57:03,046 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) [2021-10-13 00:57:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-10-13 00:57:03,047 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-10-13 00:57:03,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:03,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-10-13 00:57:03,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:03,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-10-13 00:57:03,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:03,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-10-13 00:57:03,056 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-13 00:57:03,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-10-13 00:57:03,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-10-13 00:57:03,062 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-10-13 00:57:03,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-10-13 00:57:03,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:03,063 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-10-13 00:57:03,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-10-13 00:57:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-10-13 00:57:03,079 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) [2021-10-13 00:57:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-10-13 00:57:03,081 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-10-13 00:57:03,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:57:03,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:57:03,082 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) [2021-10-13 00:57:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:03,216 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2021-10-13 00:57:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:57:03,217 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2021-10-13 00:57:03,221 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-13 00:57:03,225 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2021-10-13 00:57:03,226 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-10-13 00:57:03,226 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-10-13 00:57:03,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2021-10-13 00:57:03,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:03,227 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2021-10-13 00:57:03,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2021-10-13 00:57:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-13 00:57:03,241 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) [2021-10-13 00:57:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2021-10-13 00:57:03,243 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-13 00:57:03,243 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-13 00:57:03,243 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:57:03,243 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2021-10-13 00:57:03,245 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-13 00:57:03,246 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:57:03,246 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:57:03,251 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] [2021-10-13 00:57:03,251 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] [2021-10-13 00:57:03,251 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 := 8; 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 [2021-10-13 00:57:03,252 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 [2021-10-13 00:57:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-10-13 00:57:03,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:03,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082388294] [2021-10-13 00:57:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:03,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-13 00:57:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:57:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:57:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-13 00:57:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:57:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-10-13 00:57:03,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:03,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082388294] [2021-10-13 00:57:03,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082388294] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:03,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488641556] [2021-10-13 00:57:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:03,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:03,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:03,454 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:03,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-13 00:57:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:57:03,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 17 proven. 91 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-13 00:57:03,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488641556] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:03,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:03,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 17 [2021-10-13 00:57:03,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930358183] [2021-10-13 00:57:03,896 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:57:03,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:03,897 INFO L82 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-10-13 00:57:03,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:03,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420644167] [2021-10-13 00:57:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:03,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:57:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:57:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-13 00:57:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:57:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-13 00:57:03,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:03,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420644167] [2021-10-13 00:57:03,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420644167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:03,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514946103] [2021-10-13 00:57:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:03,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:03,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:03,999 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:04,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-13 00:57:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:04,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:57:04,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-13 00:57:04,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514946103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:04,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:04,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2021-10-13 00:57:04,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651057319] [2021-10-13 00:57:04,318 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:57:04,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:57:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:57:04,319 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) [2021-10-13 00:57:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:04,603 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2021-10-13 00:57:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:57:04,604 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2021-10-13 00:57:04,609 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-13 00:57:04,614 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2021-10-13 00:57:04,614 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-13 00:57:04,615 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-10-13 00:57:04,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2021-10-13 00:57:04,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:04,616 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-10-13 00:57:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2021-10-13 00:57:04,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2021-10-13 00:57:04,630 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) [2021-10-13 00:57:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-10-13 00:57:04,632 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-13 00:57:04,633 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-13 00:57:04,633 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 00:57:04,633 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2021-10-13 00:57:04,635 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-13 00:57:04,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:57:04,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:57:04,638 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] [2021-10-13 00:57:04,638 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] [2021-10-13 00:57:04,638 INFO L791 eck$LassoCheckResult]: Stem: 2262#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2263#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 2297#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2331#fibo1ENTRY ~n := #in~n; 2320#L10 assume !(~n < 1); 2313#L12 assume !(1 == ~n); 2314#L15 call #t~ret7 := fibo2(~n - 1);< 2322#fibo2ENTRY ~n := #in~n; 2403#L20 assume !(~n < 1); 2402#L22 assume !(1 == ~n); 2306#L25 call #t~ret9 := fibo1(~n - 1);< 2345#fibo1ENTRY ~n := #in~n; 2343#L10 assume !(~n < 1); 2342#L12 assume !(1 == ~n); 2317#L15 call #t~ret7 := fibo2(~n - 1);< 2336#fibo2ENTRY ~n := #in~n; 2366#L20 assume !(~n < 1); 2364#L22 assume !(1 == ~n); 2273#L25 call #t~ret9 := fibo1(~n - 1);< 2345#fibo1ENTRY ~n := #in~n; 2346#L10 assume !(~n < 1); 2375#L12 assume 1 == ~n;#res := 1; 2376#fibo1FINAL assume true; 2421#fibo1EXIT >#46#return; 2416#L25-1 call #t~ret10 := fibo1(~n - 2);< 2418#fibo1ENTRY ~n := #in~n; 2422#L10 assume ~n < 1;#res := 0; 2419#fibo1FINAL assume true; 2415#fibo1EXIT >#48#return; 2411#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2409#fibo2FINAL assume true; 2383#fibo2EXIT >#50#return; 2385#L15-1 [2021-10-13 00:57:04,638 INFO L793 eck$LassoCheckResult]: Loop: 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume !(1 == ~n); 2275#L25 call #t~ret9 := fibo1(~n - 1);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume !(1 == ~n); 2275#L25 call #t~ret9 := fibo1(~n - 1);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume 1 == ~n;#res := 1; 2407#fibo2FINAL assume true; 2390#fibo2EXIT >#50#return; 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume ~n < 1;#res := 0; 2404#fibo2FINAL assume true; 2401#fibo2EXIT >#52#return; 2384#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2400#fibo1FINAL assume true; 2393#fibo1EXIT >#46#return; 2276#L25-1 call #t~ret10 := fibo1(~n - 2);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume 1 == ~n;#res := 1; 2407#fibo2FINAL assume true; 2390#fibo2EXIT >#50#return; 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume ~n < 1;#res := 0; 2404#fibo2FINAL assume true; 2401#fibo2EXIT >#52#return; 2384#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2400#fibo1FINAL assume true; 2393#fibo1EXIT >#48#return; 2391#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2388#fibo2FINAL assume true; 2386#fibo2EXIT >#50#return; 2385#L15-1 [2021-10-13 00:57:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:04,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-10-13 00:57:04,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:04,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695427610] [2021-10-13 00:57:04,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:04,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:04,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-13 00:57:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:04,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:04,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:04,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:04,774 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:57:04,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:04,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695427610] [2021-10-13 00:57:04,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695427610] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:04,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926251687] [2021-10-13 00:57:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:04,776 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:04,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:04,778 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:04,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-13 00:57:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:04,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:57:04,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:57:05,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926251687] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:05,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:05,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 15 [2021-10-13 00:57:05,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749094624] [2021-10-13 00:57:05,072 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:57:05,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:05,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-10-13 00:57:05,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:05,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071094176] [2021-10-13 00:57:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:05,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-13 00:57:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:05,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-13 00:57:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,212 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-13 00:57:05,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:05,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071094176] [2021-10-13 00:57:05,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071094176] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:05,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644558293] [2021-10-13 00:57:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:05,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:05,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:05,218 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:05,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-13 00:57:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:57:05,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:05,582 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 00:57:05,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644558293] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:05,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:05,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-13 00:57:05,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95082611] [2021-10-13 00:57:05,584 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:57:05,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:05,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:57:05,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:57:05,585 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 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 00:57:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:05,849 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2021-10-13 00:57:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:57:05,850 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 268 transitions. [2021-10-13 00:57:05,854 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-13 00:57:05,858 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 203 states and 264 transitions. [2021-10-13 00:57:05,858 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2021-10-13 00:57:05,858 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-10-13 00:57:05,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 264 transitions. [2021-10-13 00:57:05,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:05,859 INFO L681 BuchiCegarLoop]: Abstraction has 203 states and 264 transitions. [2021-10-13 00:57:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 264 transitions. [2021-10-13 00:57:05,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2021-10-13 00:57:05,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 132 states have internal predecessors, (143), 39 states have call successors, (40), 25 states have call predecessors, (40), 33 states have return successors, (66), 36 states have call predecessors, (66), 37 states have call successors, (66) [2021-10-13 00:57:05,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 249 transitions. [2021-10-13 00:57:05,871 INFO L704 BuchiCegarLoop]: Abstraction has 194 states and 249 transitions. [2021-10-13 00:57:05,871 INFO L587 BuchiCegarLoop]: Abstraction has 194 states and 249 transitions. [2021-10-13 00:57:05,872 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-13 00:57:05,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 194 states and 249 transitions. [2021-10-13 00:57:05,874 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-13 00:57:05,874 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:57:05,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:57:05,876 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:05,876 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:05,876 INFO L791 eck$LassoCheckResult]: Stem: 3059#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); 3060#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 3092#L39 call main_#t~ret11 := fibo1(main_~x~0);< 3125#fibo1ENTRY ~n := #in~n; 3181#L10 assume !(~n < 1); 3180#L12 assume !(1 == ~n); 3069#L15 call #t~ret7 := fibo2(~n - 1);< 3179#fibo2ENTRY ~n := #in~n; 3118#L20 assume !(~n < 1); 3068#L22 assume !(1 == ~n); 3070#L25 call #t~ret9 := fibo1(~n - 1);< 3086#fibo1ENTRY ~n := #in~n; 3087#L10 assume !(~n < 1); 3109#L12 assume !(1 == ~n); 3110#L15 call #t~ret7 := fibo2(~n - 1);< 3115#fibo2ENTRY ~n := #in~n; 3124#L20 assume !(~n < 1); 3170#L22 assume !(1 == ~n); 3105#L25 call #t~ret9 := fibo1(~n - 1);< 3152#fibo1ENTRY ~n := #in~n; 3153#L10 assume !(~n < 1); 3177#L12 assume !(1 == ~n); 3168#L15 call #t~ret7 := fibo2(~n - 1);< 3169#fibo2ENTRY ~n := #in~n; 3174#L20 assume !(~n < 1); 3172#L22 assume 1 == ~n;#res := 1; 3171#fibo2FINAL assume true; 3167#fibo2EXIT >#50#return; 3165#L15-1 call #t~ret8 := fibo2(~n - 2);< 3166#fibo2ENTRY ~n := #in~n; 3175#L20 assume ~n < 1;#res := 0; 3173#fibo2FINAL assume true; 3164#fibo2EXIT >#52#return; 3163#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 3161#fibo1FINAL assume true; 3155#fibo1EXIT >#46#return; 3146#L25-1 call #t~ret10 := fibo1(~n - 2);< 3154#fibo1ENTRY ~n := #in~n; 3243#L10 assume ~n < 1;#res := 0; 3244#fibo1FINAL assume true; 3238#fibo1EXIT >#48#return; 3219#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 3218#fibo2FINAL assume true; 3215#fibo2EXIT >#50#return; 3065#L15-1 call #t~ret8 := fibo2(~n - 2);< 3123#fibo2ENTRY [2021-10-13 00:57:05,877 INFO L793 eck$LassoCheckResult]: Loop: 3123#fibo2ENTRY ~n := #in~n; 3116#L20 assume !(~n < 1); 3061#L22 assume !(1 == ~n); 3067#L25 call #t~ret9 := fibo1(~n - 1);< 3200#fibo1ENTRY ~n := #in~n; 3213#L10 assume !(~n < 1); 3209#L12 assume !(1 == ~n); 3064#L15 call #t~ret7 := fibo2(~n - 1);< 3123#fibo2ENTRY [2021-10-13 00:57:05,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:05,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1055972758, now seen corresponding path program 1 times [2021-10-13 00:57:05,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:05,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695994202] [2021-10-13 00:57:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:05,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-13 00:57:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-13 00:57:05,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-13 00:57:05,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:05,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695994202] [2021-10-13 00:57:05,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695994202] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:05,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606553567] [2021-10-13 00:57:05,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:05,994 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:05,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:06,002 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:06,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-13 00:57:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:06,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:57:06,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:57:06,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606553567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:06,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:06,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 20 [2021-10-13 00:57:06,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137372342] [2021-10-13 00:57:06,453 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:57:06,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:06,454 INFO L82 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2021-10-13 00:57:06,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:06,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610989769] [2021-10-13 00:57:06,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:06,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:06,459 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:57:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:06,465 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:57:06,573 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:06,573 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:06,573 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:06,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:06,573 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:57:06,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:06,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:06,574 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:06,574 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration6_Loop [2021-10-13 00:57:06,574 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:06,574 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:06,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,641 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:06,641 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:57:06,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:06,642 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:06,661 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:06,662 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:06,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-13 00:57:06,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:06,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:06,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:06,695 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:06,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-13 00:57:06,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:57:06,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:06,769 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:57:06,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:06,775 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:06,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:06,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:06,775 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:06,775 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:57:06,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:06,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:06,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:06,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration6_Loop [2021-10-13 00:57:06,775 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:06,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:06,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,802 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:06,837 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:06,838 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:57:06,838 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:06,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:06,846 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:06,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-13 00:57:06,848 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 [2021-10-13 00:57:06,857 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:06,857 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:06,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:06,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:06,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:06,858 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:06,859 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:06,871 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:06,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:06,890 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:06,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:06,891 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:06,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-13 00:57:06,893 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 [2021-10-13 00:57:06,899 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:06,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:06,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:06,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:06,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:06,900 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:06,900 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:06,901 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:06,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:06,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:06,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:06,924 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:06,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-13 00:57:06,926 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 [2021-10-13 00:57:06,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:06,933 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:06,933 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:06,933 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:06,933 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:06,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:06,934 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:06,936 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:57:06,939 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:57:06,939 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 00:57:06,939 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:06,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:06,940 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:06,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-13 00:57:06,942 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:57:06,942 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:57:06,942 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:57:06,942 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-10-13 00:57:06,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:06,974 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:57:06,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:07,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:57:07,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:07,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:07,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:07,799 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 [2021-10-13 00:57:07,799 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:07,984 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 349 states and 444 transitions. Complement of second has 24 states. [2021-10-13 00:57:07,988 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 [2021-10-13 00:57:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:07,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2021-10-13 00:57:07,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-13 00:57:07,990 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:07,993 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:57:08,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:08,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:57:08,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:08,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:08,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:08,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:08,849 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 [2021-10-13 00:57:08,849 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:09,003 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 349 states and 444 transitions. Complement of second has 24 states. [2021-10-13 00:57:09,004 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 [2021-10-13 00:57:09,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:09,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2021-10-13 00:57:09,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-13 00:57:09,004 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:09,004 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:57:09,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:09,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:57:09,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:09,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:09,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:09,705 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 [2021-10-13 00:57:09,706 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:09,872 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 426 states and 529 transitions. Complement of second has 23 states. [2021-10-13 00:57:09,877 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 [2021-10-13 00:57:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-10-13 00:57:09,878 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-13 00:57:09,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:09,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 53 letters. Loop has 8 letters. [2021-10-13 00:57:09,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:09,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 16 letters. [2021-10-13 00:57:09,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:09,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 426 states and 529 transitions. [2021-10-13 00:57:09,890 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2021-10-13 00:57:09,896 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 426 states to 329 states and 427 transitions. [2021-10-13 00:57:09,896 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 180 [2021-10-13 00:57:09,896 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2021-10-13 00:57:09,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 329 states and 427 transitions. [2021-10-13 00:57:09,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:09,897 INFO L681 BuchiCegarLoop]: Abstraction has 329 states and 427 transitions. [2021-10-13 00:57:09,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states and 427 transitions. [2021-10-13 00:57:09,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 297. [2021-10-13 00:57:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 197 states have (on average 1.1878172588832487) internal successors, (234), 212 states have internal predecessors, (234), 55 states have call successors, (56), 44 states have call predecessors, (56), 45 states have return successors, (90), 40 states have call predecessors, (90), 53 states have call successors, (90) [2021-10-13 00:57:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 380 transitions. [2021-10-13 00:57:09,919 INFO L704 BuchiCegarLoop]: Abstraction has 297 states and 380 transitions. [2021-10-13 00:57:09,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:09,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:57:09,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:57:09,920 INFO L87 Difference]: Start difference. First operand 297 states and 380 transitions. Second operand has 20 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 12 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 6 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-13 00:57:10,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:10,506 INFO L93 Difference]: Finished difference Result 405 states and 576 transitions. [2021-10-13 00:57:10,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 00:57:10,507 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 405 states and 576 transitions. [2021-10-13 00:57:10,515 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-10-13 00:57:10,523 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 405 states to 405 states and 576 transitions. [2021-10-13 00:57:10,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 246 [2021-10-13 00:57:10,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2021-10-13 00:57:10,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 405 states and 576 transitions. [2021-10-13 00:57:10,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:10,525 INFO L681 BuchiCegarLoop]: Abstraction has 405 states and 576 transitions. [2021-10-13 00:57:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states and 576 transitions. [2021-10-13 00:57:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 369. [2021-10-13 00:57:10,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 236 states have (on average 1.194915254237288) internal successors, (282), 256 states have internal predecessors, (282), 78 states have call successors, (80), 48 states have call predecessors, (80), 55 states have return successors, (146), 64 states have call predecessors, (146), 76 states have call successors, (146) [2021-10-13 00:57:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2021-10-13 00:57:10,545 INFO L704 BuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2021-10-13 00:57:10,545 INFO L587 BuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2021-10-13 00:57:10,545 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-13 00:57:10,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2021-10-13 00:57:10,549 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-13 00:57:10,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:57:10,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:57:10,551 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:10,551 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:10,551 INFO L791 eck$LassoCheckResult]: Stem: 5923#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); 5924#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 5955#L39 call main_#t~ret11 := fibo1(main_~x~0);< 6004#fibo1ENTRY ~n := #in~n; 6042#L10 assume !(~n < 1); 6041#L12 assume !(1 == ~n); 6037#L15 call #t~ret7 := fibo2(~n - 1);< 6040#fibo2ENTRY ~n := #in~n; 6039#L20 assume !(~n < 1); 6038#L22 assume !(1 == ~n); 6006#L25 call #t~ret9 := fibo1(~n - 1);< 6036#fibo1ENTRY ~n := #in~n; 6035#L10 assume !(~n < 1); 6034#L12 assume !(1 == ~n); 6017#L15 call #t~ret7 := fibo2(~n - 1);< 6018#fibo2ENTRY ~n := #in~n; 6027#L20 assume !(~n < 1); 6028#L22 assume !(1 == ~n); 5965#L25 call #t~ret9 := fibo1(~n - 1);< 6029#fibo1ENTRY ~n := #in~n; 6030#L10 assume !(~n < 1); 6125#L12 assume !(1 == ~n); 6116#L15 call #t~ret7 := fibo2(~n - 1);< 6117#fibo2ENTRY ~n := #in~n; 6123#L20 assume !(~n < 1); 6122#L22 assume 1 == ~n;#res := 1; 6120#fibo2FINAL assume true; 6115#fibo2EXIT >#50#return; 6112#L15-1 call #t~ret8 := fibo2(~n - 2);< 6113#fibo2ENTRY ~n := #in~n; 6118#L20 assume ~n < 1;#res := 0; 6114#fibo2FINAL assume true; 6111#fibo2EXIT >#52#return; 6110#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6109#fibo1FINAL assume true; 6108#fibo1EXIT >#46#return; 6099#L25-1 call #t~ret10 := fibo1(~n - 2);< 5946#fibo1ENTRY ~n := #in~n; 6102#L10 assume !(~n < 1); 6101#L12 assume !(1 == ~n); 5945#L15 call #t~ret7 := fibo2(~n - 1);< 6098#fibo2ENTRY ~n := #in~n; 6097#L20 assume !(~n < 1); 6094#L22 assume 1 == ~n;#res := 1; 6095#fibo2FINAL assume true; 6210#fibo2EXIT >#50#return; 6143#L15-1 [2021-10-13 00:57:10,552 INFO L793 eck$LassoCheckResult]: Loop: 6143#L15-1 call #t~ret8 := fibo2(~n - 2);< 6142#fibo2ENTRY ~n := #in~n; 6144#L20 assume !(~n < 1); 6228#L22 assume !(1 == ~n); 5986#L25 call #t~ret9 := fibo1(~n - 1);< 5962#fibo1ENTRY ~n := #in~n; 5985#L10 assume !(~n < 1); 5987#L12 assume !(1 == ~n); 5960#L15 call #t~ret7 := fibo2(~n - 1);< 5995#fibo2ENTRY ~n := #in~n; 6003#L20 assume !(~n < 1); 6216#L22 assume 1 == ~n;#res := 1; 6214#fibo2FINAL assume true; 6212#fibo2EXIT >#50#return; 6143#L15-1 [2021-10-13 00:57:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:10,552 INFO L82 PathProgramCache]: Analyzing trace with hash 881386511, now seen corresponding path program 1 times [2021-10-13 00:57:10,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:10,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36343669] [2021-10-13 00:57:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:10,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:10,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-13 00:57:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-10-13 00:57:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-13 00:57:10,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:10,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36343669] [2021-10-13 00:57:10,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36343669] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:10,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653976616] [2021-10-13 00:57:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:10,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:10,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:10,731 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:10,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-13 00:57:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:11,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:57:11,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:57:11,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653976616] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:11,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:11,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 18 [2021-10-13 00:57:11,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402565243] [2021-10-13 00:57:11,174 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:57:11,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:11,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1489002864, now seen corresponding path program 1 times [2021-10-13 00:57:11,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:11,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058973873] [2021-10-13 00:57:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:11,175 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:11,187 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:57:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:11,191 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:57:11,388 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:11,389 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:11,389 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:11,389 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:11,389 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:57:11,389 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,389 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:11,389 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:11,389 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2021-10-13 00:57:11,389 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:11,389 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:11,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,411 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,418 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:11,466 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:11,467 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:57:11,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:11,468 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:11,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:11,481 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:11,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-13 00:57:11,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:11,502 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:11,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:11,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:11,540 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:11,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:11,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:11,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-13 00:57:11,565 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:11,565 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:11,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:11,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:11,605 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:11,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:11,608 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:11,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-13 00:57:11,629 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:11,629 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:11,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:11,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:11,668 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:11,670 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:11,670 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:11,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-13 00:57:11,690 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:11,690 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:11,725 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:11,726 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:11,728 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:11,728 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:11,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-13 00:57:11,753 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:11,753 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:11,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:11,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:11,793 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:11,798 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:11,798 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:11,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-13 00:57:11,825 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:11,825 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:11,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:11,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:11,863 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:11,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-13 00:57:11,866 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:11,869 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:11,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-10-13 00:57:11,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:11,913 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:11,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-13 00:57:11,914 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:57:11,915 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:13,017 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:57:13,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-10-13 00:57:13,020 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:13,020 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:13,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:13,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:13,021 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:57:13,021 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,021 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:13,021 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:13,021 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration7_Loop [2021-10-13 00:57:13,021 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:13,021 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:13,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,036 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:13,098 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:13,099 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:57:13,099 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,105 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-13 00:57:13,107 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 [2021-10-13 00:57:13,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:13,115 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:13,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:13,115 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:13,115 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:13,116 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:13,116 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:13,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:13,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:13,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,144 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-13 00:57:13,146 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 [2021-10-13 00:57:13,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:13,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:13,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:13,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:13,154 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:13,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:13,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:13,156 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:13,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-13 00:57:13,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,178 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-13 00:57:13,179 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 [2021-10-13 00:57:13,187 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:13,187 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:13,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:13,187 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:13,188 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:13,188 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:13,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:13,220 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:13,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:13,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,257 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,265 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 [2021-10-13 00:57:13,275 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:13,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:13,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:13,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:13,276 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:13,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:13,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:13,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-13 00:57:13,288 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:13,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-13 00:57:13,311 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,312 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-13 00:57:13,313 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 [2021-10-13 00:57:13,320 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:13,321 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:13,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:13,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:13,321 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:13,321 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:13,321 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:13,340 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:13,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:13,362 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,363 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-13 00:57:13,364 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 [2021-10-13 00:57:13,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:13,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:13,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:13,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:13,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:13,373 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:13,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:13,375 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:13,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-10-13 00:57:13,397 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,397 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-13 00:57:13,399 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 [2021-10-13 00:57:13,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:13,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:13,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:13,407 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:13,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:13,407 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:13,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:13,409 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:13,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-10-13 00:57:13,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,432 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-13 00:57:13,435 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 [2021-10-13 00:57:13,444 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:13,444 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:13,444 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:13,444 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:13,444 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:13,446 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:13,446 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:13,449 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:57:13,451 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 00:57:13,451 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:57:13,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:13,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:13,454 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:13,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-13 00:57:13,456 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:57:13,456 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:57:13,456 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:57:13,456 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-13 00:57:13,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-10-13 00:57:13,479 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:57:13,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:13,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:57:13,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:13,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:14,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:57:14,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:14,357 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 [2021-10-13 00:57:14,358 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:57:14,764 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1274 states and 1770 transitions. Complement of second has 40 states. [2021-10-13 00:57:14,765 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 [2021-10-13 00:57:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:57:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 67 transitions. [2021-10-13 00:57:14,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 67 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-13 00:57:14,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:14,766 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:57:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:14,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:57:14,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:15,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:57:15,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:15,439 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2021-10-13 00:57:15,439 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:57:15,694 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 582 states and 785 transitions. Complement of second has 26 states. [2021-10-13 00:57:15,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-13 00:57:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:57:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 46 transitions. [2021-10-13 00:57:15,695 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 46 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-13 00:57:15,695 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:15,695 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:57:15,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:15,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-13 00:57:15,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:16,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 00:57:16,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:16,283 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 8 loop predicates [2021-10-13 00:57:16,283 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:57:16,713 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 2713 states and 3811 transitions. Complement of second has 124 states. [2021-10-13 00:57:16,714 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 [2021-10-13 00:57:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-13 00:57:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2021-10-13 00:57:16,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-13 00:57:16,716 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:16,716 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 60 letters. Loop has 14 letters. [2021-10-13 00:57:16,717 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:16,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 46 letters. Loop has 28 letters. [2021-10-13 00:57:16,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:16,718 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2713 states and 3811 transitions. [2021-10-13 00:57:16,790 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 157 [2021-10-13 00:57:16,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2713 states to 2095 states and 3043 transitions. [2021-10-13 00:57:16,825 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 575 [2021-10-13 00:57:16,827 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 677 [2021-10-13 00:57:16,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2095 states and 3043 transitions. [2021-10-13 00:57:16,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:16,827 INFO L681 BuchiCegarLoop]: Abstraction has 2095 states and 3043 transitions. [2021-10-13 00:57:16,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states and 3043 transitions. [2021-10-13 00:57:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1775. [2021-10-13 00:57:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1140 states have (on average 1.1771929824561405) internal successors, (1342), 1251 states have internal predecessors, (1342), 375 states have call successors, (405), 220 states have call predecessors, (405), 260 states have return successors, (751), 303 states have call predecessors, (751), 373 states have call successors, (751) [2021-10-13 00:57:16,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2498 transitions. [2021-10-13 00:57:16,906 INFO L704 BuchiCegarLoop]: Abstraction has 1775 states and 2498 transitions. [2021-10-13 00:57:16,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-13 00:57:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:57:16,907 INFO L87 Difference]: Start difference. First operand 1775 states and 2498 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 10 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-13 00:57:17,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:17,285 INFO L93 Difference]: Finished difference Result 2563 states and 3815 transitions. [2021-10-13 00:57:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 00:57:17,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2563 states and 3815 transitions. [2021-10-13 00:57:17,320 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 232 [2021-10-13 00:57:17,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2563 states to 2560 states and 3811 transitions. [2021-10-13 00:57:17,358 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 824 [2021-10-13 00:57:17,359 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 824 [2021-10-13 00:57:17,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2560 states and 3811 transitions. [2021-10-13 00:57:17,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:17,360 INFO L681 BuchiCegarLoop]: Abstraction has 2560 states and 3811 transitions. [2021-10-13 00:57:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states and 3811 transitions. [2021-10-13 00:57:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2382. [2021-10-13 00:57:17,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1519 states have (on average 1.1981566820276497) internal successors, (1820), 1658 states have internal predecessors, (1820), 556 states have call successors, (594), 295 states have call predecessors, (594), 307 states have return successors, (1169), 428 states have call predecessors, (1169), 554 states have call successors, (1169) [2021-10-13 00:57:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3583 transitions. [2021-10-13 00:57:17,456 INFO L704 BuchiCegarLoop]: Abstraction has 2382 states and 3583 transitions. [2021-10-13 00:57:17,456 INFO L587 BuchiCegarLoop]: Abstraction has 2382 states and 3583 transitions. [2021-10-13 00:57:17,456 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-13 00:57:17,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2382 states and 3583 transitions. [2021-10-13 00:57:17,475 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-13 00:57:17,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:57:17,475 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:57:17,478 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:17,479 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 12, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 6, 5, 5, 5, 5, 4, 4, 1] [2021-10-13 00:57:17,479 INFO L791 eck$LassoCheckResult]: Stem: 16205#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); 16206#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 16260#L39 call main_#t~ret11 := fibo1(main_~x~0);< 16308#fibo1ENTRY ~n := #in~n; 16384#L10 assume !(~n < 1); 16383#L12 assume !(1 == ~n); 16379#L15 call #t~ret7 := fibo2(~n - 1);< 16382#fibo2ENTRY ~n := #in~n; 16381#L20 assume !(~n < 1); 16380#L22 assume !(1 == ~n); 16375#L25 call #t~ret9 := fibo1(~n - 1);< 16378#fibo1ENTRY ~n := #in~n; 16377#L10 assume !(~n < 1); 16376#L12 assume !(1 == ~n); 16370#L15 call #t~ret7 := fibo2(~n - 1);< 16374#fibo2ENTRY ~n := #in~n; 16373#L20 assume !(~n < 1); 16372#L22 assume !(1 == ~n); 16353#L25 call #t~ret9 := fibo1(~n - 1);< 16368#fibo1ENTRY ~n := #in~n; 16365#L10 assume !(~n < 1); 16351#L12 assume !(1 == ~n); 16343#L15 call #t~ret7 := fibo2(~n - 1);< 16361#fibo2ENTRY ~n := #in~n; 16359#L20 assume !(~n < 1); 16355#L22 assume 1 == ~n;#res := 1; 16356#fibo2FINAL assume true; 16342#fibo2EXIT >#50#return; 16344#L15-1 call #t~ret8 := fibo2(~n - 2);< 16838#fibo2ENTRY ~n := #in~n; 16836#L20 assume !(~n < 1); 16834#L22 assume !(1 == ~n); 16831#L25 call #t~ret9 := fibo1(~n - 1);< 16832#fibo1ENTRY ~n := #in~n; 16845#L10 assume !(~n < 1); 16843#L12 assume !(1 == ~n); 16841#L15 call #t~ret7 := fibo2(~n - 1);< 16842#fibo2ENTRY ~n := #in~n; 16850#L20 assume !(~n < 1); 16848#L22 assume 1 == ~n;#res := 1; 16847#fibo2FINAL assume true; 16840#fibo2EXIT >#50#return; 16344#L15-1 call #t~ret8 := fibo2(~n - 2);< 16838#fibo2ENTRY ~n := #in~n; 16839#L20 assume !(~n < 1); 17489#L22 assume !(1 == ~n); 17419#L25 call #t~ret9 := fibo1(~n - 1);< 17420#fibo1ENTRY ~n := #in~n; 17484#L10 assume !(~n < 1); 17483#L12 assume 1 == ~n;#res := 1; 17481#fibo1FINAL assume true; 17418#fibo1EXIT >#46#return; 17384#L25-1 call #t~ret10 := fibo1(~n - 2);< 17385#fibo1ENTRY ~n := #in~n; 17395#L10 assume ~n < 1;#res := 0; 17394#fibo1FINAL assume true; 17383#fibo1EXIT >#48#return; 17373#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17372#fibo2FINAL assume true; 17370#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#46#return; 17147#L25-1 [2021-10-13 00:57:17,480 INFO L793 eck$LassoCheckResult]: Loop: 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume !(1 == ~n); 17195#L15 call #t~ret7 := fibo2(~n - 1);< 17201#fibo2ENTRY ~n := #in~n; 17199#L20 assume !(~n < 1); 17197#L22 assume 1 == ~n;#res := 1; 17186#fibo2FINAL assume true; 17209#fibo2EXIT >#50#return; 17189#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17216#L15 call #t~ret7 := fibo2(~n - 1);< 17217#fibo2ENTRY ~n := #in~n; 17328#L20 assume !(~n < 1); 17351#L22 assume 1 == ~n;#res := 1; 17223#fibo2FINAL assume true; 17215#fibo2EXIT >#50#return; 17210#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17227#L15 call #t~ret7 := fibo2(~n - 1);< 17399#fibo2ENTRY ~n := #in~n; 17501#L20 assume !(~n < 1); 17539#L22 assume !(1 == ~n); 17533#L25 call #t~ret9 := fibo1(~n - 1);< 17538#fibo1ENTRY ~n := #in~n; 17772#L10 assume !(~n < 1); 17770#L12 assume !(1 == ~n); 17765#L15 call #t~ret7 := fibo2(~n - 1);< 17768#fibo2ENTRY ~n := #in~n; 17814#L20 assume !(~n < 1); 17835#L22 assume 1 == ~n;#res := 1; 17796#fibo2FINAL assume true; 17764#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#46#return; 17517#L25-1 call #t~ret10 := fibo1(~n - 2);< 17534#fibo1ENTRY ~n := #in~n; 17801#L10 assume !(~n < 1); 17799#L12 assume !(1 == ~n); 17545#L15 call #t~ret7 := fibo2(~n - 1);< 17767#fibo2ENTRY ~n := #in~n; 17782#L20 assume !(~n < 1); 17781#L22 assume 1 == ~n;#res := 1; 17678#fibo2FINAL assume true; 17762#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#48#return; 17510#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17461#fibo2FINAL assume true; 17398#fibo2EXIT >#50#return; 17156#L15-1 call #t~ret8 := fibo2(~n - 2);< 17161#fibo2ENTRY ~n := #in~n; 17364#L20 assume ~n < 1;#res := 0; 17360#fibo2FINAL assume true; 17155#fibo2EXIT >#52#return; 17160#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17393#fibo1FINAL assume true; 17390#fibo1EXIT >#46#return; 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume !(1 == ~n); 17195#L15 call #t~ret7 := fibo2(~n - 1);< 17201#fibo2ENTRY ~n := #in~n; 17199#L20 assume !(~n < 1); 17197#L22 assume 1 == ~n;#res := 1; 17186#fibo2FINAL assume true; 17209#fibo2EXIT >#50#return; 17189#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17227#L15 call #t~ret7 := fibo2(~n - 1);< 17399#fibo2ENTRY ~n := #in~n; 17501#L20 assume !(~n < 1); 17539#L22 assume !(1 == ~n); 17533#L25 call #t~ret9 := fibo1(~n - 1);< 17538#fibo1ENTRY ~n := #in~n; 17772#L10 assume !(~n < 1); 17770#L12 assume !(1 == ~n); 17765#L15 call #t~ret7 := fibo2(~n - 1);< 17768#fibo2ENTRY ~n := #in~n; 17814#L20 assume !(~n < 1); 17835#L22 assume 1 == ~n;#res := 1; 17796#fibo2FINAL assume true; 17764#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#46#return; 17517#L25-1 call #t~ret10 := fibo1(~n - 2);< 17534#fibo1ENTRY ~n := #in~n; 17801#L10 assume !(~n < 1); 17799#L12 assume !(1 == ~n); 17545#L15 call #t~ret7 := fibo2(~n - 1);< 17767#fibo2ENTRY ~n := #in~n; 17782#L20 assume !(~n < 1); 17781#L22 assume 1 == ~n;#res := 1; 17678#fibo2FINAL assume true; 17762#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#48#return; 17510#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17461#fibo2FINAL assume true; 17398#fibo2EXIT >#50#return; 17156#L15-1 call #t~ret8 := fibo2(~n - 2);< 17161#fibo2ENTRY ~n := #in~n; 17364#L20 assume ~n < 1;#res := 0; 17360#fibo2FINAL assume true; 17155#fibo2EXIT >#52#return; 17160#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17393#fibo1FINAL assume true; 17390#fibo1EXIT >#46#return; 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume 1 == ~n;#res := 1; 17204#fibo1FINAL assume true; 17151#fibo1EXIT >#48#return; 17150#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17371#fibo2FINAL assume true; 17369#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#48#return; 17150#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17371#fibo2FINAL assume true; 17369#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#46#return; 17147#L25-1 [2021-10-13 00:57:17,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:17,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1399262747, now seen corresponding path program 1 times [2021-10-13 00:57:17,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:17,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616756756] [2021-10-13 00:57:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:17,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:17,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-13 00:57:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-13 00:57:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:17,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:17,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 11 proven. 79 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-13 00:57:17,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:17,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616756756] [2021-10-13 00:57:17,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616756756] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:17,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333424679] [2021-10-13 00:57:17,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:17,667 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:17,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:17,668 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:17,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 00:57:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:57:18,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:18,281 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 62 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-13 00:57:18,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333424679] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:18,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:18,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-13 00:57:18,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544026833] [2021-10-13 00:57:18,282 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:57:18,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:18,282 INFO L82 PathProgramCache]: Analyzing trace with hash -993859138, now seen corresponding path program 1 times [2021-10-13 00:57:18,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:18,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590270502] [2021-10-13 00:57:18,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:18,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:57:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-13 00:57:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-13 00:57:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-13 00:57:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-13 00:57:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-13 00:57:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-13 00:57:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-13 00:57:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:18,527 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 2 proven. 113 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2021-10-13 00:57:18,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:18,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590270502] [2021-10-13 00:57:18,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590270502] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:18,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238043271] [2021-10-13 00:57:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:18,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:18,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:18,529 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:18,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 00:57:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:19,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:57:19,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 155 proven. 1 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2021-10-13 00:57:19,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238043271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:19,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:19,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-13 00:57:19,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584755827] [2021-10-13 00:57:19,368 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:57:19,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-13 00:57:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:57:19,369 INFO L87 Difference]: Start difference. First operand 2382 states and 3583 transitions. cyclomatic complexity: 1228 Second operand has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 11 states have internal predecessors, (50), 8 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-13 00:57:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:19,636 INFO L93 Difference]: Finished difference Result 2429 states and 3633 transitions. [2021-10-13 00:57:19,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:57:19,637 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2429 states and 3633 transitions. [2021-10-13 00:57:19,670 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-13 00:57:19,710 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2429 states to 2425 states and 3626 transitions. [2021-10-13 00:57:19,710 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 759 [2021-10-13 00:57:19,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 759 [2021-10-13 00:57:19,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2425 states and 3626 transitions. [2021-10-13 00:57:19,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:19,712 INFO L681 BuchiCegarLoop]: Abstraction has 2425 states and 3626 transitions. [2021-10-13 00:57:19,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states and 3626 transitions. [2021-10-13 00:57:19,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2404. [2021-10-13 00:57:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 1527 states have (on average 1.197773411918795) internal successors, (1829), 1682 states have internal predecessors, (1829), 562 states have call successors, (600), 297 states have call predecessors, (600), 315 states have return successors, (1160), 424 states have call predecessors, (1160), 559 states have call successors, (1160) [2021-10-13 00:57:19,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3589 transitions. [2021-10-13 00:57:19,883 INFO L704 BuchiCegarLoop]: Abstraction has 2404 states and 3589 transitions. [2021-10-13 00:57:19,883 INFO L587 BuchiCegarLoop]: Abstraction has 2404 states and 3589 transitions. [2021-10-13 00:57:19,883 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-13 00:57:19,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2404 states and 3589 transitions. [2021-10-13 00:57:19,905 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-13 00:57:19,905 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:57:19,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:57:19,907 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:19,907 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:19,907 INFO L791 eck$LassoCheckResult]: Stem: 22581#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); 22582#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 22627#L39 call main_#t~ret11 := fibo1(main_~x~0);< 22681#fibo1ENTRY ~n := #in~n; 22901#L10 assume !(~n < 1); 22894#L12 assume !(1 == ~n); 22707#L15 call #t~ret7 := fibo2(~n - 1);< 22714#fibo2ENTRY ~n := #in~n; 22773#L20 assume !(~n < 1); 22770#L22 assume !(1 == ~n); 22737#L25 call #t~ret9 := fibo1(~n - 1);< 22738#fibo1ENTRY ~n := #in~n; 22757#L10 assume !(~n < 1); 22755#L12 assume !(1 == ~n); 22735#L15 call #t~ret7 := fibo2(~n - 1);< 22750#fibo2ENTRY ~n := #in~n; 22741#L20 assume !(~n < 1); 22739#L22 assume !(1 == ~n); 22715#L25 call #t~ret9 := fibo1(~n - 1);< 22734#fibo1ENTRY ~n := #in~n; 22732#L10 assume !(~n < 1); 22730#L12 assume !(1 == ~n); 22711#L15 call #t~ret7 := fibo2(~n - 1);< 22716#fibo2ENTRY ~n := #in~n; 22774#L20 assume !(~n < 1); 22771#L22 assume !(1 == ~n); 22726#L25 call #t~ret9 := fibo1(~n - 1);< 22769#fibo1ENTRY ~n := #in~n; 22797#L10 assume !(~n < 1); 22792#L12 assume 1 == ~n;#res := 1; 22793#fibo1FINAL assume true; 23632#fibo1EXIT >#46#return; 22807#L25-1 call #t~ret10 := fibo1(~n - 2);< 22810#fibo1ENTRY ~n := #in~n; 23251#L10 assume ~n < 1;#res := 0; 23250#fibo1FINAL assume true; 22806#fibo1EXIT >#48#return; 22804#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 22802#fibo2FINAL assume true; 22758#fibo2EXIT >#50#return; 22702#L15-1 call #t~ret8 := fibo2(~n - 2);< 22723#fibo2ENTRY ~n := #in~n; 22888#L20 assume !(~n < 1); 22886#L22 assume !(1 == ~n); 22880#L25 [2021-10-13 00:57:19,907 INFO L793 eck$LassoCheckResult]: Loop: 22880#L25 call #t~ret9 := fibo1(~n - 1);< 22883#fibo1ENTRY ~n := #in~n; 22968#L10 assume !(~n < 1); 22967#L12 assume !(1 == ~n); 22891#L15 call #t~ret7 := fibo2(~n - 1);< 22893#fibo2ENTRY ~n := #in~n; 23516#L20 assume !(~n < 1); 23062#L22 assume !(1 == ~n); 23063#L25 call #t~ret9 := fibo1(~n - 1);< 23490#fibo1ENTRY ~n := #in~n; 23626#L10 assume !(~n < 1); 23619#L12 assume 1 == ~n;#res := 1; 23616#fibo1FINAL assume true; 23484#fibo1EXIT >#46#return; 22948#L25-1 call #t~ret10 := fibo1(~n - 2);< 22949#fibo1ENTRY ~n := #in~n; 23562#L10 assume ~n < 1;#res := 0; 23560#fibo1FINAL assume true; 23473#fibo1EXIT >#48#return; 22937#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 22935#fibo2FINAL assume true; 22890#fibo2EXIT >#50#return; 22698#L15-1 call #t~ret8 := fibo2(~n - 2);< 22723#fibo2ENTRY ~n := #in~n; 22888#L20 assume !(~n < 1); 22886#L22 assume !(1 == ~n); 22880#L25 [2021-10-13 00:57:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash -334000957, now seen corresponding path program 1 times [2021-10-13 00:57:19,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:19,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478976402] [2021-10-13 00:57:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:19,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-13 00:57:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,114 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:57:20,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:20,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478976402] [2021-10-13 00:57:20,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478976402] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:20,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034669557] [2021-10-13 00:57:20,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:20,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:20,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:20,125 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:20,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 00:57:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:57:20,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 00:57:20,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034669557] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:20,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:20,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 20 [2021-10-13 00:57:20,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862544872] [2021-10-13 00:57:20,775 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:57:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:20,775 INFO L82 PathProgramCache]: Analyzing trace with hash 869465037, now seen corresponding path program 1 times [2021-10-13 00:57:20,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:20,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823442658] [2021-10-13 00:57:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:20,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-13 00:57:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:57:20,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:20,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823442658] [2021-10-13 00:57:20,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823442658] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:20,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928031323] [2021-10-13 00:57:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:20,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:20,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:20,870 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:20,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 00:57:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:21,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:57:21,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:57:21,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928031323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:21,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:21,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-10-13 00:57:21,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868795785] [2021-10-13 00:57:21,527 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:57:21,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:57:21,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:57:21,528 INFO L87 Difference]: Start difference. First operand 2404 states and 3589 transitions. cyclomatic complexity: 1212 Second operand has 13 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-13 00:57:21,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:21,697 INFO L93 Difference]: Finished difference Result 1480 states and 1973 transitions. [2021-10-13 00:57:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:57:21,698 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1480 states and 1973 transitions. [2021-10-13 00:57:21,714 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 101 [2021-10-13 00:57:21,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1480 states to 1281 states and 1737 transitions. [2021-10-13 00:57:21,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 489 [2021-10-13 00:57:21,730 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 489 [2021-10-13 00:57:21,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1281 states and 1737 transitions. [2021-10-13 00:57:21,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:21,730 INFO L681 BuchiCegarLoop]: Abstraction has 1281 states and 1737 transitions. [2021-10-13 00:57:21,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states and 1737 transitions. [2021-10-13 00:57:21,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1039. [2021-10-13 00:57:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 678 states have (on average 1.1592920353982301) internal successors, (786), 733 states have internal predecessors, (786), 204 states have call successors, (213), 137 states have call predecessors, (213), 157 states have return successors, (369), 168 states have call predecessors, (369), 201 states have call successors, (369) [2021-10-13 00:57:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1368 transitions. [2021-10-13 00:57:21,770 INFO L704 BuchiCegarLoop]: Abstraction has 1039 states and 1368 transitions. [2021-10-13 00:57:21,770 INFO L587 BuchiCegarLoop]: Abstraction has 1039 states and 1368 transitions. [2021-10-13 00:57:21,771 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-13 00:57:21,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1039 states and 1368 transitions. [2021-10-13 00:57:21,778 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 101 [2021-10-13 00:57:21,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:57:21,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:57:21,779 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:21,779 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:21,779 INFO L791 eck$LassoCheckResult]: Stem: 26765#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); 26766#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 26806#L39 call main_#t~ret11 := fibo1(main_~x~0);< 26852#fibo1ENTRY ~n := #in~n; 26885#L10 assume !(~n < 1); 26884#L12 assume !(1 == ~n); 26880#L15 call #t~ret7 := fibo2(~n - 1);< 26883#fibo2ENTRY ~n := #in~n; 26882#L20 assume !(~n < 1); 26881#L22 assume !(1 == ~n); 26876#L25 call #t~ret9 := fibo1(~n - 1);< 26879#fibo1ENTRY ~n := #in~n; 26878#L10 assume !(~n < 1); 26877#L12 assume !(1 == ~n); 26872#L15 call #t~ret7 := fibo2(~n - 1);< 26875#fibo2ENTRY ~n := #in~n; 26874#L20 assume !(~n < 1); 26873#L22 assume !(1 == ~n); 26867#L25 call #t~ret9 := fibo1(~n - 1);< 26871#fibo1ENTRY ~n := #in~n; 26869#L10 assume !(~n < 1); 26870#L12 assume !(1 == ~n); 26776#L15 call #t~ret7 := fibo2(~n - 1);< 26866#fibo2ENTRY ~n := #in~n; 26865#L20 assume !(~n < 1); 26864#L22 assume !(1 == ~n); 26861#L25 call #t~ret9 := fibo1(~n - 1);< 26860#fibo1ENTRY ~n := #in~n; 26863#L10 assume !(~n < 1); 26912#L12 assume !(1 == ~n); 26909#L15 call #t~ret7 := fibo2(~n - 1);< 26910#fibo2ENTRY ~n := #in~n; 26915#L20 assume !(~n < 1); 26914#L22 assume 1 == ~n;#res := 1; 26911#fibo2FINAL assume true; 26908#fibo2EXIT >#50#return; 26906#L15-1 call #t~ret8 := fibo2(~n - 2);< 26907#fibo2ENTRY ~n := #in~n; 26919#L20 assume ~n < 1;#res := 0; 26916#fibo2FINAL assume true; 26905#fibo2EXIT >#52#return; 26904#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 26903#fibo1FINAL assume true; 26902#fibo1EXIT >#46#return; 26896#L25-1 call #t~ret10 := fibo1(~n - 2);< 26900#fibo1ENTRY ~n := #in~n; 26899#L10 assume !(~n < 1); 26898#L12 assume !(1 == ~n); 26889#L15 call #t~ret7 := fibo2(~n - 1);< 26894#fibo2ENTRY ~n := #in~n; 26893#L20 assume !(~n < 1); 26888#L22 assume !(1 == ~n); 26891#L25 call #t~ret9 := fibo1(~n - 1);< 27232#fibo1ENTRY ~n := #in~n; 27257#L10 assume !(~n < 1); 27252#L12 assume !(1 == ~n); 27244#L15 call #t~ret7 := fibo2(~n - 1);< 27248#fibo2ENTRY [2021-10-13 00:57:21,779 INFO L793 eck$LassoCheckResult]: Loop: 27248#fibo2ENTRY ~n := #in~n; 27258#L20 assume !(~n < 1); 27254#L22 assume !(1 == ~n); 27250#L25 call #t~ret9 := fibo1(~n - 1);< 27261#fibo1ENTRY ~n := #in~n; 27259#L10 assume !(~n < 1); 27255#L12 assume !(1 == ~n); 27243#L15 call #t~ret7 := fibo2(~n - 1);< 27248#fibo2ENTRY [2021-10-13 00:57:21,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:21,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1022485656, now seen corresponding path program 2 times [2021-10-13 00:57:21,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:21,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021230812] [2021-10-13 00:57:21,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:21,781 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-10-13 00:57:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:21,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:21,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:21,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-13 00:57:21,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:21,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021230812] [2021-10-13 00:57:21,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021230812] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:21,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417047154] [2021-10-13 00:57:21,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:57:21,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:21,942 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:21,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 00:57:22,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:57:22,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:57:22,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:57:22,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:22,733 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:57:22,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417047154] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:22,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:22,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 20 [2021-10-13 00:57:22,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676438369] [2021-10-13 00:57:22,734 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:57:22,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:22,735 INFO L82 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2021-10-13 00:57:22,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:22,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417043965] [2021-10-13 00:57:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:22,735 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:22,742 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:57:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:22,745 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:57:22,840 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:22,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:22,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:22,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:22,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:57:22,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:22,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:22,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:22,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2021-10-13 00:57:22,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:22,842 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:22,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,853 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:22,916 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:22,917 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:57:22,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:22,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:22,918 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:22,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-13 00:57:22,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:22,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:22,928 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:22,928 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:22,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:22,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:22,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:22,950 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:22,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-13 00:57:22,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:22,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:22,960 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:22,960 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:22,980 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-10-13 00:57:22,980 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:22,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:22,981 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:22,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-13 00:57:22,982 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:22,982 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:22,990 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:22,990 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:23,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Ended with exit code 0 [2021-10-13 00:57:23,010 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,013 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-13 00:57:23,014 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:23,014 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:23,022 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:23,022 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:23,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-10-13 00:57:23,042 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,043 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,059 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:23,059 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:23,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-13 00:57:23,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:57:23,081 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:57:23,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:23,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,114 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-13 00:57:23,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:23,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:23,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Ended with exit code 0 [2021-10-13 00:57:23,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,144 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-13 00:57:23,146 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:57:23,146 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:23,218 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:57:23,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:23,220 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:23,220 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:23,221 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:23,221 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:23,221 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:57:23,221 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,221 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:23,221 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:23,221 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration10_Loop [2021-10-13 00:57:23,221 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:23,221 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:23,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,223 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,225 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,228 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,229 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,232 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:23,286 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:23,286 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:57:23,286 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,287 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-13 00:57:23,288 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 [2021-10-13 00:57:23,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:23,296 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:23,296 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:23,296 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:23,297 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:23,297 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:23,297 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:23,298 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:23,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Ended with exit code 0 [2021-10-13 00:57:23,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,319 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-13 00:57:23,320 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 [2021-10-13 00:57:23,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:23,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:23,327 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:23,327 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:23,327 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:23,328 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:23,328 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:23,329 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:23,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:23,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,350 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-13 00:57:23,351 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 [2021-10-13 00:57:23,358 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:23,358 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:23,358 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:23,358 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:23,358 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:23,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:23,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:23,360 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:23,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:23,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,380 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-13 00:57:23,381 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 [2021-10-13 00:57:23,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:23,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:23,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:23,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:23,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:23,389 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:23,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:23,390 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:23,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:23,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,411 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-13 00:57:23,413 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 [2021-10-13 00:57:23,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:23,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:23,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:23,421 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:23,421 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:23,421 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:23,421 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:23,422 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:23,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2021-10-13 00:57:23,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,442 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-13 00:57:23,443 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 [2021-10-13 00:57:23,451 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:23,451 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:23,451 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:23,451 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:23,452 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:23,452 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:23,452 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:23,476 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:23,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-10-13 00:57:23,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,503 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-13 00:57:23,505 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 [2021-10-13 00:57:23,512 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:23,512 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:23,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:23,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:23,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:23,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:23,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:23,514 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:57:23,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-13 00:57:23,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,534 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-13 00:57:23,536 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 [2021-10-13 00:57:23,543 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:23,543 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:23,543 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:23,543 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:23,543 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:23,544 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:23,544 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:23,545 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:57:23,547 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:57:23,548 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 00:57:23,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:23,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:23,549 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:23,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-13 00:57:23,550 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:57:23,550 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:57:23,550 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:57:23,550 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-10-13 00:57:23,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:23,570 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:57:23,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:23,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:57:23,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:23,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:24,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:24,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:24,280 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 [2021-10-13 00:57:24,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:57:24,423 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1076 states and 1404 transitions. Complement of second has 21 states. [2021-10-13 00:57:24,424 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 [2021-10-13 00:57:24,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:57:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-13 00:57:24,425 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-13 00:57:24,425 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:24,425 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:57:24,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:24,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:57:24,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:24,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:24,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:24,949 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 [2021-10-13 00:57:24,949 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:57:25,062 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1076 states and 1404 transitions. Complement of second has 21 states. [2021-10-13 00:57:25,063 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 [2021-10-13 00:57:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:57:25,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-13 00:57:25,064 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-13 00:57:25,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:25,064 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:57:25,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:25,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:57:25,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:25,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:25,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:25,649 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 [2021-10-13 00:57:25,649 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:57:25,800 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1821 states and 2255 transitions. Complement of second has 25 states. [2021-10-13 00:57:25,800 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 [2021-10-13 00:57:25,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:57:25,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2021-10-13 00:57:25,801 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-13 00:57:25,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:25,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 65 letters. Loop has 8 letters. [2021-10-13 00:57:25,802 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:25,802 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 16 letters. [2021-10-13 00:57:25,803 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:25,803 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1821 states and 2255 transitions. [2021-10-13 00:57:25,820 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 133 [2021-10-13 00:57:25,835 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1821 states to 1322 states and 1717 transitions. [2021-10-13 00:57:25,835 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 438 [2021-10-13 00:57:25,836 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 456 [2021-10-13 00:57:25,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1322 states and 1717 transitions. [2021-10-13 00:57:25,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:25,836 INFO L681 BuchiCegarLoop]: Abstraction has 1322 states and 1717 transitions. [2021-10-13 00:57:25,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states and 1717 transitions. [2021-10-13 00:57:25,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1090. [2021-10-13 00:57:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 726 states have (on average 1.159779614325069) internal successors, (842), 774 states have internal predecessors, (842), 205 states have call successors, (214), 147 states have call predecessors, (214), 159 states have return successors, (361), 168 states have call predecessors, (361), 202 states have call successors, (361) [2021-10-13 00:57:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1417 transitions. [2021-10-13 00:57:25,874 INFO L704 BuchiCegarLoop]: Abstraction has 1090 states and 1417 transitions. [2021-10-13 00:57:25,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:25,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:57:25,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:57:25,875 INFO L87 Difference]: Start difference. First operand 1090 states and 1417 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 12 states have internal predecessors, (43), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-13 00:57:26,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:26,242 INFO L93 Difference]: Finished difference Result 552 states and 696 transitions. [2021-10-13 00:57:26,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-13 00:57:26,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 552 states and 696 transitions. [2021-10-13 00:57:26,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-13 00:57:26,253 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 552 states to 499 states and 627 transitions. [2021-10-13 00:57:26,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2021-10-13 00:57:26,253 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2021-10-13 00:57:26,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 499 states and 627 transitions. [2021-10-13 00:57:26,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:26,255 INFO L681 BuchiCegarLoop]: Abstraction has 499 states and 627 transitions. [2021-10-13 00:57:26,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states and 627 transitions. [2021-10-13 00:57:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 483. [2021-10-13 00:57:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 320 states have (on average 1.125) internal successors, (360), 337 states have internal predecessors, (360), 95 states have call successors, (97), 66 states have call predecessors, (97), 68 states have return successors, (149), 79 states have call predecessors, (149), 89 states have call successors, (149) [2021-10-13 00:57:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 606 transitions. [2021-10-13 00:57:26,269 INFO L704 BuchiCegarLoop]: Abstraction has 483 states and 606 transitions. [2021-10-13 00:57:26,269 INFO L587 BuchiCegarLoop]: Abstraction has 483 states and 606 transitions. [2021-10-13 00:57:26,269 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-13 00:57:26,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 483 states and 606 transitions. [2021-10-13 00:57:26,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-13 00:57:26,273 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:57:26,273 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:57:26,274 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 7, 6, 6, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:26,274 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:57:26,275 INFO L791 eck$LassoCheckResult]: Stem: 34377#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); 34378#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 34410#L39 call main_#t~ret11 := fibo1(main_~x~0);< 34459#fibo1ENTRY ~n := #in~n; 34520#L10 assume !(~n < 1); 34518#L12 assume !(1 == ~n); 34515#L15 call #t~ret7 := fibo2(~n - 1);< 34516#fibo2ENTRY ~n := #in~n; 34538#L20 assume !(~n < 1); 34531#L22 assume !(1 == ~n); 34527#L25 call #t~ret9 := fibo1(~n - 1);< 34528#fibo1ENTRY ~n := #in~n; 34605#L10 assume !(~n < 1); 34604#L12 assume !(1 == ~n); 34595#L15 call #t~ret7 := fibo2(~n - 1);< 34603#fibo2ENTRY ~n := #in~n; 34838#L20 assume !(~n < 1); 34836#L22 assume !(1 == ~n); 34436#L25 call #t~ret9 := fibo1(~n - 1);< 34669#fibo1ENTRY ~n := #in~n; 34435#L10 assume !(~n < 1); 34437#L12 assume !(1 == ~n); 34596#L15 call #t~ret7 := fibo2(~n - 1);< 34638#fibo2ENTRY ~n := #in~n; 34642#L20 assume !(~n < 1); 34641#L22 assume !(1 == ~n); 34427#L25 call #t~ret9 := fibo1(~n - 1);< 34598#fibo1ENTRY ~n := #in~n; 34434#L10 assume !(~n < 1); 34426#L12 assume !(1 == ~n); 34428#L15 call #t~ret7 := fibo2(~n - 1);< 34666#fibo2ENTRY ~n := #in~n; 34674#L20 assume !(~n < 1); 34673#L22 assume 1 == ~n;#res := 1; 34671#fibo2FINAL assume true; 34665#fibo2EXIT >#50#return; 34662#L15-1 call #t~ret8 := fibo2(~n - 2);< 34663#fibo2ENTRY ~n := #in~n; 34845#L20 assume ~n < 1;#res := 0; 34843#fibo2FINAL assume true; 34661#fibo2EXIT >#52#return; 34659#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 34658#fibo1FINAL assume true; 34657#fibo1EXIT >#46#return; 34653#L25-1 call #t~ret10 := fibo1(~n - 2);< 34654#fibo1ENTRY ~n := #in~n; 34667#L10 assume !(~n < 1); 34664#L12 assume 1 == ~n;#res := 1; 34660#fibo1FINAL assume true; 34652#fibo1EXIT >#48#return; 34650#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 34649#fibo2FINAL assume true; 34636#fibo2EXIT >#50#return; 34508#L15-1 call #t~ret8 := fibo2(~n - 2);< 34418#fibo2ENTRY ~n := #in~n; 34578#L20 assume !(~n < 1); 34577#L22 assume !(1 == ~n); 34416#L25 call #t~ret9 := fibo1(~n - 1);< 34506#fibo1ENTRY ~n := #in~n; 34475#L10 assume !(~n < 1); 34476#L12 assume !(1 == ~n); 34505#L15 call #t~ret7 := fibo2(~n - 1);< 34592#fibo2ENTRY ~n := #in~n; 34620#L20 assume !(~n < 1); 34773#L22 assume !(1 == ~n); 34725#L25 call #t~ret9 := fibo1(~n - 1);< 34729#fibo1ENTRY ~n := #in~n; 34805#L10 assume !(~n < 1); 34804#L12 assume !(1 == ~n); 34392#L15 [2021-10-13 00:57:26,275 INFO L793 eck$LassoCheckResult]: Loop: 34392#L15 call #t~ret7 := fibo2(~n - 1);< 34796#fibo2ENTRY ~n := #in~n; 34797#L20 assume !(~n < 1); 34808#L22 assume !(1 == ~n); 34727#L25 call #t~ret9 := fibo1(~n - 1);< 34729#fibo1ENTRY ~n := #in~n; 34805#L10 assume !(~n < 1); 34804#L12 assume !(1 == ~n); 34392#L15 [2021-10-13 00:57:26,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:26,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1054902100, now seen corresponding path program 2 times [2021-10-13 00:57:26,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:26,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159080465] [2021-10-13 00:57:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:26,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:26,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-13 00:57:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:26,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-13 00:57:26,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-13 00:57:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-13 00:57:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 00:57:26,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:57:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159080465] [2021-10-13 00:57:26,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159080465] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:26,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571381913] [2021-10-13 00:57:26,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:57:26,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:57:26,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:26,482 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:57:26,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-13 00:57:27,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:57:27,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:57:27,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:57:27,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-13 00:57:27,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571381913] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:57:27,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:57:27,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 20 [2021-10-13 00:57:27,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815280570] [2021-10-13 00:57:27,520 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 00:57:27,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:27,520 INFO L82 PathProgramCache]: Analyzing trace with hash 519237434, now seen corresponding path program 4 times [2021-10-13 00:57:27,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:57:27,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035843961] [2021-10-13 00:57:27,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:57:27,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:57:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:27,528 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:57:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:57:27,533 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:57:27,656 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:27,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:27,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:27,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:27,656 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:57:27,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:27,656 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:27,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:27,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration11_Loop [2021-10-13 00:57:27,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:27,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:27,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:27,737 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:27,737 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:57:27,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:27,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:27,741 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:27,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:57:27,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:27,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-13 00:57:27,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:27,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:27,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:27,809 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:27,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:57:27,811 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:57:27,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-13 00:57:29,792 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:57:29,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:29,795 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:57:29,795 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:57:29,795 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:57:29,796 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:57:29,796 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:57:29,796 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:29,796 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:57:29,796 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:57:29,796 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-1.c_Iteration11_Loop [2021-10-13 00:57:29,796 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:57:29,796 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:57:29,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,817 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:57:29,864 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:57:29,865 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:57:29,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:29,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:29,866 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:29,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-13 00:57:29,867 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 [2021-10-13 00:57:29,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:57:29,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:57:29,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:57:29,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:57:29,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:57:29,875 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:57:29,875 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:57:29,877 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:57:29,880 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:57:29,880 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 00:57:29,880 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:57:29,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:57:29,881 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:57:29,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-13 00:57:29,882 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:57:29,882 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:57:29,882 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:57:29,882 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-13 00:57:29,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Ended with exit code 0 [2021-10-13 00:57:29,902 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:57:29,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:30,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 00:57:30,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:30,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:30,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:30,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:30,783 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-13 00:57:30,784 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:30,902 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 524 states and 649 transitions. Complement of second has 19 states. [2021-10-13 00:57:30,905 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 [2021-10-13 00:57:30,905 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 22 transitions. [2021-10-13 00:57:30,905 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 22 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-13 00:57:30,906 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:30,906 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:57:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:31,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 00:57:31,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:31,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:31,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:31,724 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-13 00:57:31,724 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:31,885 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 530 states and 655 transitions. Complement of second has 27 states. [2021-10-13 00:57:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-13 00:57:31,886 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:31,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 25 transitions. [2021-10-13 00:57:31,886 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 25 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-13 00:57:31,887 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:31,887 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:57:31,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:57:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:31,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 00:57:31,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:57:32,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 00:57:32,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:57:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:57:32,788 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 6 loop predicates [2021-10-13 00:57:32,789 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:32,918 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 825 states and 995 transitions. Complement of second has 33 states. [2021-10-13 00:57:32,919 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 [2021-10-13 00:57:32,919 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, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:32,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-10-13 00:57:32,920 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-13 00:57:32,920 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:32,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2021-10-13 00:57:32,921 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:32,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2021-10-13 00:57:32,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:57:32,922 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 825 states and 995 transitions. [2021-10-13 00:57:32,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-13 00:57:32,937 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 825 states to 579 states and 719 transitions. [2021-10-13 00:57:32,938 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 270 [2021-10-13 00:57:32,938 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 314 [2021-10-13 00:57:32,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 579 states and 719 transitions. [2021-10-13 00:57:32,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:57:32,939 INFO L681 BuchiCegarLoop]: Abstraction has 579 states and 719 transitions. [2021-10-13 00:57:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states and 719 transitions. [2021-10-13 00:57:32,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 529. [2021-10-13 00:57:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 354 states have (on average 1.1101694915254237) internal successors, (393), 370 states have internal predecessors, (393), 102 states have call successors, (109), 77 states have call predecessors, (109), 73 states have return successors, (154), 81 states have call predecessors, (154), 96 states have call successors, (154) [2021-10-13 00:57:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 656 transitions. [2021-10-13 00:57:32,958 INFO L704 BuchiCegarLoop]: Abstraction has 529 states and 656 transitions. [2021-10-13 00:57:32,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:57:32,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-13 00:57:32,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-13 00:57:32,960 INFO L87 Difference]: Start difference. First operand 529 states and 656 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 12 states have internal predecessors, (46), 10 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-13 00:57:33,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:57:33,304 INFO L93 Difference]: Finished difference Result 521 states and 613 transitions. [2021-10-13 00:57:33,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-13 00:57:33,305 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 521 states and 613 transitions. [2021-10-13 00:57:33,309 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:57:33,309 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 521 states to 0 states and 0 transitions. [2021-10-13 00:57:33,309 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:57:33,309 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:57:33,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:57:33,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:57:33,310 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:57:33,310 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:57:33,310 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:57:33,310 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-13 00:57:33,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:57:33,310 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:57:33,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:57:33,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:57:33 BoogieIcfgContainer [2021-10-13 00:57:33,317 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:57:33,317 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:57:33,318 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:57:33,318 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:57:33,318 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:56:56" (3/4) ... [2021-10-13 00:57:33,322 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:57:33,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:57:33,324 INFO L168 Benchmark]: Toolchain (without parser) took 37350.39 ms. Allocated memory was 98.6 MB in the beginning and 390.1 MB in the end (delta: 291.5 MB). Free memory was 69.5 MB in the beginning and 162.6 MB in the end (delta: -93.1 MB). Peak memory consumption was 196.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:33,324 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory was 53.2 MB in the beginning and 53.2 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:57:33,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.00 ms. Allocated memory was 98.6 MB in the beginning and 140.5 MB in the end (delta: 41.9 MB). Free memory was 69.3 MB in the beginning and 116.2 MB in the end (delta: -47.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:33,325 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.24 ms. Allocated memory is still 140.5 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:33,326 INFO L168 Benchmark]: Boogie Preprocessor took 22.68 ms. Allocated memory is still 140.5 MB. Free memory was 114.6 MB in the beginning and 113.7 MB in the end (delta: 921.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:57:33,326 INFO L168 Benchmark]: RCFGBuilder took 304.17 ms. Allocated memory is still 140.5 MB. Free memory was 113.7 MB in the beginning and 104.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:33,327 INFO L168 Benchmark]: BuchiAutomizer took 36710.16 ms. Allocated memory was 140.5 MB in the beginning and 390.1 MB in the end (delta: 249.6 MB). Free memory was 104.1 MB in the beginning and 162.6 MB in the end (delta: -58.5 MB). Peak memory consumption was 190.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:57:33,327 INFO L168 Benchmark]: Witness Printer took 4.54 ms. Allocated memory is still 390.1 MB. Free memory is still 162.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:57:33,329 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 98.6 MB. Free memory was 53.2 MB in the beginning and 53.2 MB in the end (delta: 62.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.00 ms. Allocated memory was 98.6 MB in the beginning and 140.5 MB in the end (delta: 41.9 MB). Free memory was 69.3 MB in the beginning and 116.2 MB in the end (delta: -47.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.24 ms. Allocated memory is still 140.5 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.68 ms. Allocated memory is still 140.5 MB. Free memory was 114.6 MB in the beginning and 113.7 MB in the end (delta: 921.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 304.17 ms. Allocated memory is still 140.5 MB. Free memory was 113.7 MB in the beginning and 104.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 36710.16 ms. Allocated memory was 140.5 MB in the beginning and 390.1 MB in the end (delta: 249.6 MB). Free memory was 104.1 MB in the beginning and 162.6 MB in the end (delta: -58.5 MB). Peak memory consumption was 190.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.54 ms. Allocated memory is still 390.1 MB. Free memory is still 162.6 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 16 terminating modules (10 trivial, 2 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 10 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 36.6s and 12 iterations. TraceHistogramMax:18. Analysis of lassos took 19.7s. Construction of modules took 2.7s. Büchi inclusion checks took 12.8s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 15. Automata minimization 603.0ms AutomataMinimizationTime, 15 MinimizatonAttempts, 1197 StatesRemovedByMinimization, 15 NontrivialMinimizations. Non-live state removal took 0.4s Buchi closure took 0.0s. Biggest automaton had 2404 states and ocurred in iteration 8. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 531 SDtfs, 1215 SDslu, 1801 SDs, 0 SdLazy, 4129 SolverSat, 718 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2759.4ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI5 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf92 lsp93 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf93 smp80 dnf100 smp100 tf110 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 00:57:33,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:33,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:33,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-13 00:57:33,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-13 00:57:34,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-13 00:57:34,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-10-13 00:57:34,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-13 00:57:34,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-13 00:57:34,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-13 00:57:35,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-13 00:57:35,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-13 00:57:35,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-13 00:57:35,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:57:35,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_365532da-b39d-4735-abb1-5555f46e5143/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...