./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G --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 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:35:23,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:35:23,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:35:23,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:35:23,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:35:23,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:35:23,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:35:23,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:35:23,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:35:23,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:35:23,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:35:23,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:35:23,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:35:23,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:35:23,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:35:23,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:35:23,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:35:23,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:35:23,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:35:23,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:35:23,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:35:23,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:35:23,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:35:23,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:35:23,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:35:23,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:35:23,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:35:23,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:35:23,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:35:23,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:35:23,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:35:23,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:35:23,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:35:23,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:35:23,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:35:23,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:35:23,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:35:23,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:35:23,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:35:23,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:35:23,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:35:23,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-23 13:35:23,475 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:35:23,475 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:35:23,475 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:35:23,475 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:35:23,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:35:23,477 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:35:23,477 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:35:23,477 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-23 13:35:23,477 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-23 13:35:23,477 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-23 13:35:23,478 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-23 13:35:23,478 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-23 13:35:23,478 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-23 13:35:23,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:35:23,478 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:35:23,479 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 13:35:23,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:35:23,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:35:23,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:35:23,479 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-23 13:35:23,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-23 13:35:23,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-23 13:35:23,480 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:35:23,480 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:35:23,480 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-23 13:35:23,480 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:35:23,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-23 13:35:23,485 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:35:23,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:35:23,486 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:35:23,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:35:23,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:35:23,488 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-23 13:35:23,488 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_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2021-11-23 13:35:23,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:35:23,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:35:23,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:35:23,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:35:23,934 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:35:23,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2021-11-23 13:35:24,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/data/8433cc32b/a4f942c1342340718215aa0c204cd35d/FLAG8a31ebb2c [2021-11-23 13:35:24,682 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:35:24,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2021-11-23 13:35:24,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/data/8433cc32b/a4f942c1342340718215aa0c204cd35d/FLAG8a31ebb2c [2021-11-23 13:35:25,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/data/8433cc32b/a4f942c1342340718215aa0c204cd35d [2021-11-23 13:35:25,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:35:25,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:35:25,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:25,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:35:25,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:35:25,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463a9fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25, skipping insertion in model container [2021-11-23 13:35:25,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:35:25,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:35:25,337 WARN L230 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_26914276-9606-4b6e-9c0e-4a8fb5271fc6/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2021-11-23 13:35:25,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:25,348 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:35:25,364 WARN L230 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_26914276-9606-4b6e-9c0e-4a8fb5271fc6/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2021-11-23 13:35:25,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:25,379 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:35:25,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25 WrapperNode [2021-11-23 13:35:25,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:25,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:25,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:35:25,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:35:25,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,400 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,419 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-11-23 13:35:25,419 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:25,420 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:35:25,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:35:25,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:35:25,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:35:25,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:35:25,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:35:25,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:35:25,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (1/1) ... [2021-11-23 13:35:25,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:25,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:25,501 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:25,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-23 13:35:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:35:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:35:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-11-23 13:35:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-11-23 13:35:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-11-23 13:35:25,579 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-11-23 13:35:25,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:35:25,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:35:25,666 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:35:25,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:35:25,846 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:35:25,854 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:35:25,857 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:35:25,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:25 BoogieIcfgContainer [2021-11-23 13:35:25,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:35:25,862 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-23 13:35:25,862 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-23 13:35:25,866 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-23 13:35:25,867 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:35:25,867 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 01:35:25" (1/3) ... [2021-11-23 13:35:25,869 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e718822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:35:25, skipping insertion in model container [2021-11-23 13:35:25,869 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:35:25,870 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:25" (2/3) ... [2021-11-23 13:35:25,870 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e718822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 01:35:25, skipping insertion in model container [2021-11-23 13:35:25,870 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-23 13:35:25,871 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:25" (3/3) ... [2021-11-23 13:35:25,873 INFO L388 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-2.c [2021-11-23 13:35:25,953 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-23 13:35:25,954 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-23 13:35:25,954 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-23 13:35:25,954 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-23 13:35:25,954 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-23 13:35:25,955 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-23 13:35:25,955 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-23 13:35:25,955 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-23 13:35:25,973 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) [2021-11-23 13:35:26,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:35:26,004 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:26,004 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:26,013 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 13:35:26,013 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:26,013 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-23 13:35:26,014 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) [2021-11-23 13:35:26,020 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:35:26,020 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:26,020 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:26,021 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-23 13:35:26,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:26,030 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 15#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5#fibo1ENTRYtrue [2021-11-23 13:35:26,030 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret4 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret6 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-11-23 13:35:26,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-11-23 13:35:26,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:26,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574188665] [2021-11-23 13:35:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:26,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:26,192 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:26,225 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-11-23 13:35:26,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:26,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929920362] [2021-11-23 13:35:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:26,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:26,242 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:26,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:26,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:26,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-11-23 13:35:26,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:26,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083706619] [2021-11-23 13:35:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:26,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:26,305 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:26,350 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:26,638 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:26,639 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:26,639 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:26,639 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:26,640 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:35:26,640 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:26,640 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:26,641 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:26,641 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2021-11-23 13:35:26,641 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:26,641 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:26,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,688 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:26,783 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:26,784 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:35:26,787 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:26,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:26,793 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:26,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-23 13:35:26,796 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:26,796 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:26,820 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:26,821 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:26,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:26,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:26,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:26,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:26,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-23 13:35:26,882 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:26,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:26,904 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:26,904 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:26,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:26,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:26,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:26,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:26,958 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:26,959 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:26,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-23 13:35:26,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:26,982 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:27,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,029 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:27,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:27,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-23 13:35:27,069 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:27,070 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:27,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,115 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:27,127 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:27,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-23 13:35:27,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:27,154 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:27,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,199 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:27,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:27,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-23 13:35:27,233 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:27,234 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:27,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:27,292 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:27,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-23 13:35:27,321 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:27,322 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:27,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,378 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:27,378 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:27,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-23 13:35:27,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:27,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:27,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,447 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,455 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:27,455 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:27,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-23 13:35:27,482 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:27,483 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:27,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,529 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,550 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:27,550 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:27,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-23 13:35:27,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,618 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:35:27,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:27,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-23 13:35:27,749 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:35:27,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2021-11-23 13:35:27,757 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:27,757 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:27,757 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:27,758 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:27,758 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:35:27,758 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,758 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:27,758 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:27,758 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2021-11-23 13:35:27,759 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:27,759 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:27,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,768 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,771 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:27,880 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:27,885 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:35:27,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,889 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,894 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 [2021-11-23 13:35:27,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:27,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:27,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:27,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:27,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:27,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:27,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:27,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-23 13:35:27,933 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:27,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:27,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:27,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:27,983 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:27,990 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 [2021-11-23 13:35:28,001 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:28,002 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:28,002 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:28,002 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:28,002 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:28,008 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:28,008 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:28,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-23 13:35:28,020 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:28,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:28,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:28,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:28,066 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:28,075 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 [2021-11-23 13:35:28,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-23 13:35:28,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:28,090 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:28,091 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:28,091 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:28,091 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:28,092 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:28,092 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:28,104 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:28,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:28,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:28,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:28,150 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:28,162 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 [2021-11-23 13:35:28,173 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:28,174 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:28,174 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:28,174 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:28,174 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:28,175 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:28,175 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:28,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-23 13:35:28,201 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:28,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:28,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:28,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:28,250 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:28,256 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 [2021-11-23 13:35:28,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:28,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:28,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:28,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:28,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:28,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:28,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:28,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-23 13:35:28,285 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:28,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:28,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:28,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:28,334 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:28,338 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 [2021-11-23 13:35:28,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:28,350 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:28,350 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:28,350 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:28,350 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:28,352 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:28,352 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:28,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-23 13:35:28,369 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:28,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:28,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:28,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:28,416 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:28,426 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 [2021-11-23 13:35:28,437 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:28,438 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:28,438 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:28,438 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:28,438 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:28,439 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:28,439 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:28,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-23 13:35:28,449 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:28,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:28,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:28,496 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:28,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-23 13:35:28,511 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 [2021-11-23 13:35:28,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:28,523 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:28,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:28,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:28,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:28,525 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:28,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:28,549 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:35:28,565 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:35:28,566 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:35:28,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:28,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:28,576 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:28,602 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:35:28,602 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:35:28,603 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:35:28,603 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-11-23 13:35:28,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-23 13:35:28,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:28,649 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:35:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:28,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 13:35:28,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:28,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:35:28,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:28,925 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 [2021-11-23 13:35:28,927 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) [2021-11-23 13:35:29,214 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. [2021-11-23 13:35:29,216 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 [2021-11-23 13:35:29,242 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) [2021-11-23 13:35:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-11-23 13:35:29,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-11-23 13:35:29,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:29,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-11-23 13:35:29,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:29,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-11-23 13:35:29,262 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:29,263 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-11-23 13:35:29,273 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:35:29,288 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-11-23 13:35:29,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-11-23 13:35:29,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-11-23 13:35:29,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-11-23 13:35:29,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:29,293 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-11-23 13:35:29,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-11-23 13:35:29,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-11-23 13:35:29,337 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) [2021-11-23 13:35:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-11-23 13:35:29,346 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-11-23 13:35:29,346 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-11-23 13:35:29,346 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-23 13:35:29,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-11-23 13:35:29,356 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:35:29,358 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:29,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:29,361 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:29,361 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:29,362 INFO L791 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 197#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 214#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret4 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret6 := 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 [2021-11-23 13:35:29,362 INFO L793 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret7 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret4 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret6 := 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 [2021-11-23 13:35:29,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:29,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-11-23 13:35:29,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:29,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323716406] [2021-11-23 13:35:29,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:29,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-23 13:35:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:29,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:35:29,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:29,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323716406] [2021-11-23 13:35:29,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323716406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:29,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:29,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:35:29,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863447292] [2021-11-23 13:35:29,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:29,542 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:35:29,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-11-23 13:35:29,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:29,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139592957] [2021-11-23 13:35:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:29,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-23 13:35:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:29,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:35:29,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:29,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139592957] [2021-11-23 13:35:29,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139592957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:29,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:29,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:35:29,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167346591] [2021-11-23 13:35:29,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:29,605 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 13:35:29,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:29,611 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) [2021-11-23 13:35:29,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:29,732 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-11-23 13:35:29,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:35:29,735 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-11-23 13:35:29,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:35:29,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-11-23 13:35:29,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-11-23 13:35:29,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-11-23 13:35:29,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-11-23 13:35:29,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:29,744 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-11-23 13:35:29,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-11-23 13:35:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-11-23 13:35:29,764 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) [2021-11-23 13:35:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-11-23 13:35:29,772 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-11-23 13:35:29,773 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-11-23 13:35:29,773 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-23 13:35:29,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-11-23 13:35:29,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-23 13:35:29,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:29,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:29,781 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:29,781 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:29,781 INFO L791 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 342#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 360#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret6 := 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 [2021-11-23 13:35:29,781 INFO L793 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret7 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret4 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret6 := 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 [2021-11-23 13:35:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-11-23 13:35:29,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:29,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986917060] [2021-11-23 13:35:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:29,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-23 13:35:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:29,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:29,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986917060] [2021-11-23 13:35:29,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986917060] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:29,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118858960] [2021-11-23 13:35:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:29,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:29,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:29,958 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:29,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-23 13:35:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:30,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:35:30,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:30,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:30,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:30,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118858960] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:30,310 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:30,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-11-23 13:35:30,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332901215] [2021-11-23 13:35:30,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:30,311 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:35:30,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:30,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-11-23 13:35:30,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:30,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336889199] [2021-11-23 13:35:30,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:30,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:30,336 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:30,354 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:30,623 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:30,623 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:30,623 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:30,623 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:30,624 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:35:30,624 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:30,624 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:30,624 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:30,624 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2021-11-23 13:35:30,624 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:30,624 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:30,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:30,727 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:30,728 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:35:30,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:30,729 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:30,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-23 13:35:30,733 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:30,733 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:30,743 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:30,743 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:30,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:30,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:30,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:30,777 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:30,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-23 13:35:30,778 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:30,778 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:30,805 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:30,805 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:30,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:30,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:30,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:30,853 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:30,858 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:30,858 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:30,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-23 13:35:30,885 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:30,886 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:30,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:30,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:30,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:30,923 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:30,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-23 13:35:30,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:30,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:30,946 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:30,947 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:30,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:30,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:30,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:30,971 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:30,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-23 13:35:30,973 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:30,973 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:30,983 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:30,983 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:31,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-11-23 13:35:31,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:31,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:31,008 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:31,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:31,011 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:31,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-23 13:35:31,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:31,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:31,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:31,053 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:31,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-23 13:35:31,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:35:31,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:32,460 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:35:32,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-11-23 13:35:32,463 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:32,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:32,464 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:32,464 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:32,464 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:35:32,464 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:32,464 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:32,464 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:32,464 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2021-11-23 13:35:32,464 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:32,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:32,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:32,558 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:32,558 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:35:32,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:32,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:32,560 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:32,568 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 [2021-11-23 13:35:32,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:32,579 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:32,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:32,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:32,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:32,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:32,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:32,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-23 13:35:32,597 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:32,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:32,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:32,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:32,629 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:32,639 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 [2021-11-23 13:35:32,650 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:32,651 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:32,651 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:32,651 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:32,651 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:32,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:32,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:32,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-23 13:35:32,667 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:32,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:32,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:32,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:32,709 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:32,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-23 13:35:32,715 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 [2021-11-23 13:35:32,727 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:32,727 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:32,727 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:32,727 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:32,727 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:32,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:32,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:32,753 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:32,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:32,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:32,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:32,784 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:32,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-23 13:35:32,787 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 [2021-11-23 13:35:32,795 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:32,795 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:32,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:32,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:32,796 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:32,796 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:32,796 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:32,797 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:32,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-11-23 13:35:32,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:32,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:32,824 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:32,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-23 13:35:32,827 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 [2021-11-23 13:35:32,836 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:32,836 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:32,836 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:32,836 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:32,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:32,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:32,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:32,850 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:35:32,855 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:35:32,855 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:35:32,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:32,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:32,862 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:32,867 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:35:32,867 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:35:32,867 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:35:32,867 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-11-23 13:35:32,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-23 13:35:32,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:32,898 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:35:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:32,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:35:32,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:33,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:33,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:35:33,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:33,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:33,318 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 [2021-11-23 13:35:33,319 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) [2021-11-23 13:35:33,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:33,832 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. [2021-11-23 13:35:33,832 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 [2021-11-23 13:35:33,834 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) [2021-11-23 13:35:33,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-11-23 13:35:33,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-11-23 13:35:33,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:33,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-11-23 13:35:33,843 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:33,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-11-23 13:35:33,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:33,845 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-11-23 13:35:33,854 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-23 13:35:33,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-11-23 13:35:33,877 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-11-23 13:35:33,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-11-23 13:35:33,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-11-23 13:35:33,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:33,895 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-11-23 13:35:33,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-11-23 13:35:33,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-11-23 13:35:33,926 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) [2021-11-23 13:35:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-11-23 13:35:33,937 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-11-23 13:35:33,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:33,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 13:35:33,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-11-23 13:35:33,938 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 16 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 13:35:34,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:34,266 INFO L93 Difference]: Finished difference Result 213 states and 281 transitions. [2021-11-23 13:35:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:35:34,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 281 transitions. [2021-11-23 13:35:34,277 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-23 13:35:34,286 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 204 states and 272 transitions. [2021-11-23 13:35:34,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2021-11-23 13:35:34,287 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-11-23 13:35:34,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 204 states and 272 transitions. [2021-11-23 13:35:34,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:34,288 INFO L681 BuchiCegarLoop]: Abstraction has 204 states and 272 transitions. [2021-11-23 13:35:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states and 272 transitions. [2021-11-23 13:35:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-11-23 13:35:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 120 states have (on average 1.225) internal successors, (147), 129 states have internal predecessors, (147), 44 states have call successors, (46), 24 states have call predecessors, (46), 28 states have return successors, (64), 38 states have call predecessors, (64), 42 states have call successors, (64) [2021-11-23 13:35:34,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 257 transitions. [2021-11-23 13:35:34,315 INFO L704 BuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-11-23 13:35:34,316 INFO L587 BuchiCegarLoop]: Abstraction has 192 states and 257 transitions. [2021-11-23 13:35:34,316 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-23 13:35:34,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 192 states and 257 transitions. [2021-11-23 13:35:34,320 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-11-23 13:35:34,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:34,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:34,323 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:34,323 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:34,324 INFO L791 eck$LassoCheckResult]: Stem: 1241#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1242#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 1276#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1313#fibo1ENTRY ~n := #in~n; 1350#L10 assume !(~n < 1); 1349#L12 assume !(1 == ~n); 1259#L15 call #t~ret4 := fibo2(~n - 1);< 1348#fibo2ENTRY ~n := #in~n; 1347#L20 assume !(~n < 1); 1346#L22 assume !(1 == ~n); 1271#L25 call #t~ret6 := fibo1(~n - 1);< 1270#fibo1ENTRY ~n := #in~n; 1272#L10 assume !(~n < 1); 1292#L12 assume !(1 == ~n); 1293#L15 call #t~ret4 := fibo2(~n - 1);< 1299#fibo2ENTRY ~n := #in~n; 1426#L20 assume !(~n < 1); 1425#L22 assume !(1 == ~n); 1280#L25 call #t~ret6 := fibo1(~n - 1);< 1344#fibo1ENTRY ~n := #in~n; 1345#L10 assume !(~n < 1); 1355#L12 assume !(1 == ~n); 1356#L15 call #t~ret4 := fibo2(~n - 1);< 1364#fibo2ENTRY ~n := #in~n; 1368#L20 assume ~n < 1;#res := 0; 1367#fibo2FINAL assume true; 1363#fibo2EXIT >#50#return; 1360#L15-1 call #t~ret5 := fibo2(~n - 2);< 1361#fibo2ENTRY ~n := #in~n; 1365#L20 assume ~n < 1;#res := 0; 1362#fibo2FINAL assume true; 1359#fibo2EXIT >#52#return; 1357#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1358#fibo1FINAL assume true; 1424#fibo1EXIT >#46#return; 1332#L25-1 call #t~ret7 := fibo1(~n - 2);< 1343#fibo1ENTRY ~n := #in~n; 1376#L10 assume ~n < 1;#res := 0; 1431#fibo1FINAL assume true; 1422#fibo1EXIT >#48#return; 1420#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1419#fibo2FINAL assume true; 1416#fibo2EXIT >#50#return; 1246#L15-1 call #t~ret5 := fibo2(~n - 2);< 1298#fibo2ENTRY [2021-11-23 13:35:34,324 INFO L793 eck$LassoCheckResult]: Loop: 1298#fibo2ENTRY ~n := #in~n; 1429#L20 assume !(~n < 1); 1243#L22 assume !(1 == ~n); 1248#L25 call #t~ret6 := fibo1(~n - 1);< 1265#fibo1ENTRY ~n := #in~n; 1269#L10 assume !(~n < 1); 1290#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1298#fibo2ENTRY [2021-11-23 13:35:34,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash -960039395, now seen corresponding path program 1 times [2021-11-23 13:35:34,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:34,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503715511] [2021-11-23 13:35:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:34,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-23 13:35:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:34,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-23 13:35:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-23 13:35:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-23 13:35:34,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:34,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503715511] [2021-11-23 13:35:34,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503715511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:34,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457319271] [2021-11-23 13:35:34,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:34,456 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:34,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:34,457 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:34,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-23 13:35:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:34,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 13:35:34,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:34,788 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:35:34,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:35,364 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:35:35,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457319271] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:35,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:35,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 15] total 25 [2021-11-23 13:35:35,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767105884] [2021-11-23 13:35:35,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:35,366 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:35:35,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2021-11-23 13:35:35,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:35,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994340370] [2021-11-23 13:35:35,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:35,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:35,372 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:35,377 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:35,514 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:35,514 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:35,514 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:35,514 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:35,514 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:35:35,514 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,514 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:35,514 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:35,515 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2021-11-23 13:35:35,515 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:35,515 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:35,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,533 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:35,598 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:35,598 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:35:35,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:35,600 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-23 13:35:35,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:35,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:35,622 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:35,623 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:35,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:35,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:35,682 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:35,686 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:35,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-23 13:35:35,713 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:35,713 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:35,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:35,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:35,757 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:35,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:35,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-23 13:35:35,786 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:35,786 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:35,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:35,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:35,831 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,837 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:35,838 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:35,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-23 13:35:35,848 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:35,848 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:35,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-11-23 13:35:35,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:35,873 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-23 13:35:35,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:35,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:35,884 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:35,884 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:35,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-11-23 13:35:35,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:35,909 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-23 13:35:35,912 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:35,912 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:35,922 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:35,922 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:35,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:35,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:35,950 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-23 13:35:35,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:35,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:35,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:35,961 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:35,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:35,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:35,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:35,987 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:35,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-23 13:35:35,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:35,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:36,000 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:36,000 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:36,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-11-23 13:35:36,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,025 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-23 13:35:36,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:36,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:36,037 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:36,038 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:36,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-11-23 13:35:36,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,062 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-23 13:35:36,066 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:36,066 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:36,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-11-23 13:35:36,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,100 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-23 13:35:36,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:35:36,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:36,192 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:35:36,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-11-23 13:35:36,195 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:36,196 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:36,196 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:36,196 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:36,196 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:35:36,196 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,196 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:36,196 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:36,196 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration4_Loop [2021-11-23 13:35:36,196 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:36,196 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:36,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,218 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,220 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,224 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:36,298 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:36,298 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:35:36,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,300 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,306 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 [2021-11-23 13:35:36,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-23 13:35:36,315 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,316 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,316 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,316 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,316 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,317 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,317 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,327 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:36,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,369 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,378 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 [2021-11-23 13:35:36,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,390 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,390 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,390 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,391 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,391 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-23 13:35:36,401 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:36,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,442 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,446 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 [2021-11-23 13:35:36,457 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,457 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,457 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,457 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,457 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,458 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,458 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-23 13:35:36,469 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:36,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,511 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,514 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 [2021-11-23 13:35:36,525 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,526 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,527 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,527 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-23 13:35:36,545 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:36,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,588 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,595 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 [2021-11-23 13:35:36,606 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,606 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,606 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,606 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,606 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-23 13:35:36,621 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-11-23 13:35:36,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,647 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-23 13:35:36,648 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 [2021-11-23 13:35:36,657 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,657 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,657 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,657 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,658 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,658 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,658 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,671 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-11-23 13:35:36,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,698 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-23 13:35:36,699 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 [2021-11-23 13:35:36,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,707 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,708 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,708 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,708 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,708 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,708 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,709 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-11-23 13:35:36,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,734 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-23 13:35:36,735 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 [2021-11-23 13:35:36,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,744 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,744 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,745 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-11-23 13:35:36,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,770 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-23 13:35:36,771 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:35:36,779 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,780 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,780 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,780 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,780 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,781 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:36,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-11-23 13:35:36,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,807 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-11-23 13:35:36,809 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 [2021-11-23 13:35:36,819 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:36,819 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:36,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:36,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:36,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:36,821 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:36,821 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:36,825 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:35:36,829 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:35:36,829 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:35:36,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:36,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:36,830 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:36,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-11-23 13:35:36,831 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:35:36,831 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:35:36,831 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:35:36,831 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-11-23 13:35:36,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-11-23 13:35:36,857 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:35:36,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:36,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:35:36,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:37,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:37,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:35:37,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:37,749 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 [2021-11-23 13:35:37,749 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-23 13:35:37,992 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 698 states and 973 transitions. Complement of second has 26 states. [2021-11-23 13:35:37,994 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 [2021-11-23 13:35:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-23 13:35:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2021-11-23 13:35:37,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-23 13:35:38,002 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:38,002 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:35:38,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:38,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:35:38,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:38,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:35:38,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:38,790 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 [2021-11-23 13:35:38,790 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-23 13:35:38,995 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 698 states and 973 transitions. Complement of second has 26 states. [2021-11-23 13:35:38,996 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 [2021-11-23 13:35:38,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-23 13:35:38,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 40 transitions. [2021-11-23 13:35:38,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 40 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-23 13:35:38,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:39,000 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:35:39,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:39,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:35:39,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:39,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:35:39,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:39,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:39,717 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 [2021-11-23 13:35:39,718 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70 Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-23 13:35:39,907 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 192 states and 257 transitions. cyclomatic complexity: 70. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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 587 states and 803 transitions. Complement of second has 25 states. [2021-11-23 13:35:39,908 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 [2021-11-23 13:35:39,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-23 13:35:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-11-23 13:35:39,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 8 letters. [2021-11-23 13:35:39,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:39,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 52 letters. Loop has 8 letters. [2021-11-23 13:35:39,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:39,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 44 letters. Loop has 16 letters. [2021-11-23 13:35:39,914 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:39,914 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 587 states and 803 transitions. [2021-11-23 13:35:39,928 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 56 [2021-11-23 13:35:39,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 587 states to 476 states and 676 transitions. [2021-11-23 13:35:39,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 215 [2021-11-23 13:35:39,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2021-11-23 13:35:39,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 476 states and 676 transitions. [2021-11-23 13:35:39,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:39,946 INFO L681 BuchiCegarLoop]: Abstraction has 476 states and 676 transitions. [2021-11-23 13:35:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states and 676 transitions. [2021-11-23 13:35:39,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 401. [2021-11-23 13:35:39,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 267 states have (on average 1.2621722846441947) internal successors, (337), 290 states have internal predecessors, (337), 78 states have call successors, (81), 60 states have call predecessors, (81), 56 states have return successors, (126), 50 states have call predecessors, (126), 76 states have call successors, (126) [2021-11-23 13:35:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 544 transitions. [2021-11-23 13:35:39,993 INFO L704 BuchiCegarLoop]: Abstraction has 401 states and 544 transitions. [2021-11-23 13:35:39,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:39,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 13:35:39,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-23 13:35:39,995 INFO L87 Difference]: Start difference. First operand 401 states and 544 transitions. Second operand has 25 states, 22 states have (on average 2.590909090909091) internal successors, (57), 20 states have internal predecessors, (57), 16 states have call successors, (21), 7 states have call predecessors, (21), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2021-11-23 13:35:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:40,694 INFO L93 Difference]: Finished difference Result 499 states and 693 transitions. [2021-11-23 13:35:40,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 13:35:40,695 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 499 states and 693 transitions. [2021-11-23 13:35:40,708 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2021-11-23 13:35:40,721 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 499 states to 457 states and 645 transitions. [2021-11-23 13:35:40,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 256 [2021-11-23 13:35:40,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 257 [2021-11-23 13:35:40,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 457 states and 645 transitions. [2021-11-23 13:35:40,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:40,724 INFO L681 BuchiCegarLoop]: Abstraction has 457 states and 645 transitions. [2021-11-23 13:35:40,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states and 645 transitions. [2021-11-23 13:35:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 414. [2021-11-23 13:35:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 269 states have (on average 1.20817843866171) internal successors, (325), 298 states have internal predecessors, (325), 85 states have call successors, (87), 57 states have call predecessors, (87), 60 states have return successors, (161), 58 states have call predecessors, (161), 83 states have call successors, (161) [2021-11-23 13:35:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 573 transitions. [2021-11-23 13:35:40,784 INFO L704 BuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2021-11-23 13:35:40,784 INFO L587 BuchiCegarLoop]: Abstraction has 414 states and 573 transitions. [2021-11-23 13:35:40,784 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-23 13:35:40,785 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 414 states and 573 transitions. [2021-11-23 13:35:40,790 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 60 [2021-11-23 13:35:40,790 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:40,790 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:40,795 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:40,796 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:40,796 INFO L791 eck$LassoCheckResult]: Stem: 5286#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 5287#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 5315#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5369#fibo1ENTRY ~n := #in~n; 5421#L10 assume !(~n < 1); 5420#L12 assume !(1 == ~n); 5416#L15 call #t~ret4 := fibo2(~n - 1);< 5419#fibo2ENTRY ~n := #in~n; 5418#L20 assume !(~n < 1); 5417#L22 assume !(1 == ~n); 5412#L25 call #t~ret6 := fibo1(~n - 1);< 5415#fibo1ENTRY ~n := #in~n; 5414#L10 assume !(~n < 1); 5413#L12 assume !(1 == ~n); 5408#L15 call #t~ret4 := fibo2(~n - 1);< 5411#fibo2ENTRY ~n := #in~n; 5410#L20 assume !(~n < 1); 5409#L22 assume !(1 == ~n); 5404#L25 call #t~ret6 := fibo1(~n - 1);< 5407#fibo1ENTRY ~n := #in~n; 5406#L10 assume !(~n < 1); 5405#L12 assume !(1 == ~n); 5390#L15 call #t~ret4 := fibo2(~n - 1);< 5403#fibo2ENTRY ~n := #in~n; 5399#L20 assume !(~n < 1); 5400#L22 assume !(1 == ~n); 5318#L25 call #t~ret6 := fibo1(~n - 1);< 5427#fibo1ENTRY ~n := #in~n; 5428#L10 assume !(~n < 1); 5578#L12 assume 1 == ~n;#res := 1; 5579#fibo1FINAL assume true; 5644#fibo1EXIT >#46#return; 5487#L25-1 call #t~ret7 := fibo1(~n - 2);< 5498#fibo1ENTRY ~n := #in~n; 5494#L10 assume !(~n < 1); 5495#L12 assume !(1 == ~n); 5479#L15 call #t~ret4 := fibo2(~n - 1);< 5486#fibo2ENTRY ~n := #in~n; 5484#L20 assume !(~n < 1); 5481#L22 assume 1 == ~n;#res := 1; 5482#fibo2FINAL assume true; 5567#fibo2EXIT >#50#return; 5356#L15-1 [2021-11-23 13:35:40,796 INFO L793 eck$LassoCheckResult]: Loop: 5356#L15-1 call #t~ret5 := fibo2(~n - 2);< 5529#fibo2ENTRY ~n := #in~n; 5348#L20 assume !(~n < 1); 5357#L22 assume !(1 == ~n); 5550#L25 call #t~ret6 := fibo1(~n - 1);< 5558#fibo1ENTRY ~n := #in~n; 5597#L10 assume !(~n < 1); 5596#L12 assume 1 == ~n;#res := 1; 5595#fibo1FINAL assume true; 5593#fibo1EXIT >#46#return; 5585#L25-1 call #t~ret7 := fibo1(~n - 2);< 5591#fibo1ENTRY ~n := #in~n; 5590#L10 assume !(~n < 1); 5589#L12 assume !(1 == ~n); 5350#L15 call #t~ret4 := fibo2(~n - 1);< 5362#fibo2ENTRY ~n := #in~n; 5363#L20 assume !(~n < 1); 5630#L22 assume !(1 == ~n); 5607#L25 call #t~ret6 := fibo1(~n - 1);< 5608#fibo1ENTRY ~n := #in~n; 5622#L10 assume !(~n < 1); 5620#L12 assume 1 == ~n;#res := 1; 5619#fibo1FINAL assume true; 5606#fibo1EXIT >#46#return; 5603#L25-1 call #t~ret7 := fibo1(~n - 2);< 5605#fibo1ENTRY ~n := #in~n; 5652#L10 assume ~n < 1;#res := 0; 5649#fibo1FINAL assume true; 5602#fibo1EXIT >#48#return; 5555#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5599#fibo2FINAL assume true; 5564#fibo2EXIT >#50#return; 5356#L15-1 [2021-11-23 13:35:40,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1816161101, now seen corresponding path program 1 times [2021-11-23 13:35:40,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:40,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513413620] [2021-11-23 13:35:40,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:40,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-23 13:35:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-23 13:35:41,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:41,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:41,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513413620] [2021-11-23 13:35:41,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513413620] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:41,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436477089] [2021-11-23 13:35:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:41,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:41,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:41,061 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:41,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-23 13:35:41,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 13:35:41,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 24 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:41,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:41,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436477089] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:41,467 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:41,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2021-11-23 13:35:41,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599289538] [2021-11-23 13:35:41,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:41,469 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:35:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:41,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1364976163, now seen corresponding path program 1 times [2021-11-23 13:35:41,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:41,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237931153] [2021-11-23 13:35:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:41,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-23 13:35:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-23 13:35:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:35:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:35:41,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:41,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237931153] [2021-11-23 13:35:41,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237931153] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:41,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804423650] [2021-11-23 13:35:41,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:41,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:41,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:41,542 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:41,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-23 13:35:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:41,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:35:41,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 13:35:41,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:35:41,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804423650] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:41,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:41,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-11-23 13:35:41,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952440188] [2021-11-23 13:35:41,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:41,780 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 13:35:41,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:41,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:35:41,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:35:41,781 INFO L87 Difference]: Start difference. First operand 414 states and 573 transitions. cyclomatic complexity: 166 Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-23 13:35:41,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:41,864 INFO L93 Difference]: Finished difference Result 384 states and 501 transitions. [2021-11-23 13:35:41,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:35:41,865 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 384 states and 501 transitions. [2021-11-23 13:35:41,874 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-23 13:35:41,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 384 states to 359 states and 475 transitions. [2021-11-23 13:35:41,881 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 221 [2021-11-23 13:35:41,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 222 [2021-11-23 13:35:41,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 359 states and 475 transitions. [2021-11-23 13:35:41,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:41,883 INFO L681 BuchiCegarLoop]: Abstraction has 359 states and 475 transitions. [2021-11-23 13:35:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states and 475 transitions. [2021-11-23 13:35:41,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 344. [2021-11-23 13:35:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 227 states have (on average 1.1629955947136563) internal successors, (264), 244 states have internal predecessors, (264), 65 states have call successors, (66), 50 states have call predecessors, (66), 52 states have return successors, (119), 49 states have call predecessors, (119), 63 states have call successors, (119) [2021-11-23 13:35:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 449 transitions. [2021-11-23 13:35:41,902 INFO L704 BuchiCegarLoop]: Abstraction has 344 states and 449 transitions. [2021-11-23 13:35:41,902 INFO L587 BuchiCegarLoop]: Abstraction has 344 states and 449 transitions. [2021-11-23 13:35:41,902 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-23 13:35:41,902 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 344 states and 449 transitions. [2021-11-23 13:35:41,906 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-23 13:35:41,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:41,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:41,910 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:41,911 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:41,911 INFO L791 eck$LassoCheckResult]: Stem: 6590#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 6591#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 6621#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6659#fibo1ENTRY ~n := #in~n; 6773#L10 assume !(~n < 1); 6772#L12 assume !(1 == ~n); 6768#L15 call #t~ret4 := fibo2(~n - 1);< 6771#fibo2ENTRY ~n := #in~n; 6770#L20 assume !(~n < 1); 6769#L22 assume !(1 == ~n); 6759#L25 call #t~ret6 := fibo1(~n - 1);< 6767#fibo1ENTRY ~n := #in~n; 6766#L10 assume !(~n < 1); 6765#L12 assume !(1 == ~n); 6755#L15 call #t~ret4 := fibo2(~n - 1);< 6758#fibo2ENTRY ~n := #in~n; 6757#L20 assume !(~n < 1); 6756#L22 assume !(1 == ~n); 6741#L25 call #t~ret6 := fibo1(~n - 1);< 6754#fibo1ENTRY ~n := #in~n; 6753#L10 assume !(~n < 1); 6752#L12 assume !(1 == ~n); 6698#L15 call #t~ret4 := fibo2(~n - 1);< 6678#fibo2ENTRY ~n := #in~n; 6738#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6629#L25 call #t~ret6 := fibo1(~n - 1);< 6749#fibo1ENTRY ~n := #in~n; 6747#L10 assume !(~n < 1); 6745#L12 assume !(1 == ~n); 6677#L15 call #t~ret4 := fibo2(~n - 1);< 6678#fibo2ENTRY ~n := #in~n; 6738#L20 assume !(~n < 1); 6736#L22 assume !(1 == ~n); 6629#L25 call #t~ret6 := fibo1(~n - 1);< 6749#fibo1ENTRY ~n := #in~n; 6750#L10 assume !(~n < 1); 6764#L12 assume 1 == ~n;#res := 1; 6902#fibo1FINAL assume true; 6898#fibo1EXIT >#46#return; 6899#L25-1 call #t~ret7 := fibo1(~n - 2);< 6910#fibo1ENTRY ~n := #in~n; 6912#L10 assume ~n < 1;#res := 0; 6909#fibo1FINAL assume true; 6907#fibo1EXIT >#48#return; 6891#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6889#fibo2FINAL assume true; 6825#fibo2EXIT >#50#return; 6796#L15-1 [2021-11-23 13:35:41,911 INFO L793 eck$LassoCheckResult]: Loop: 6796#L15-1 call #t~ret5 := fibo2(~n - 2);< 6801#fibo2ENTRY ~n := #in~n; 6826#L20 assume !(~n < 1); 6823#L22 assume !(1 == ~n); 6817#L25 call #t~ret6 := fibo1(~n - 1);< 6821#fibo1ENTRY ~n := #in~n; 6859#L10 assume !(~n < 1); 6856#L12 assume !(1 == ~n); 6805#L15 call #t~ret4 := fibo2(~n - 1);< 6833#fibo2ENTRY ~n := #in~n; 6826#L20 assume !(~n < 1); 6823#L22 assume !(1 == ~n); 6817#L25 call #t~ret6 := fibo1(~n - 1);< 6821#fibo1ENTRY ~n := #in~n; 6859#L10 assume !(~n < 1); 6856#L12 assume !(1 == ~n); 6805#L15 call #t~ret4 := fibo2(~n - 1);< 6833#fibo2ENTRY ~n := #in~n; 6834#L20 assume !(~n < 1); 6852#L22 assume 1 == ~n;#res := 1; 6850#fibo2FINAL assume true; 6831#fibo2EXIT >#50#return; 6796#L15-1 call #t~ret5 := fibo2(~n - 2);< 6801#fibo2ENTRY ~n := #in~n; 6835#L20 assume ~n < 1;#res := 0; 6876#fibo2FINAL assume true; 6824#fibo2EXIT >#52#return; 6800#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 6820#fibo1FINAL assume true; 6812#fibo1EXIT >#46#return; 6814#L25-1 call #t~ret7 := fibo1(~n - 2);< 6819#fibo1ENTRY ~n := #in~n; 6857#L10 assume ~n < 1;#res := 0; 6858#fibo1FINAL assume true; 6842#fibo1EXIT >#48#return; 6840#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6838#fibo2FINAL assume true; 6803#fibo2EXIT >#50#return; 6796#L15-1 [2021-11-23 13:35:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:41,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199334, now seen corresponding path program 1 times [2021-11-23 13:35:41,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:41,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171809272] [2021-11-23 13:35:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:41,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-23 13:35:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:35:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:35:42,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:42,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171809272] [2021-11-23 13:35:42,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171809272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:42,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005033914] [2021-11-23 13:35:42,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:42,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:42,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:42,201 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:42,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-23 13:35:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:35:42,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:35:42,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:35:42,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005033914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:42,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:42,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2021-11-23 13:35:42,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31439814] [2021-11-23 13:35:42,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:42,766 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:35:42,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1513837346, now seen corresponding path program 1 times [2021-11-23 13:35:42,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:42,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319683805] [2021-11-23 13:35:42,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:42,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-23 13:35:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:35:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-23 13:35:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 13:35:42,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:42,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319683805] [2021-11-23 13:35:42,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319683805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:42,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726433793] [2021-11-23 13:35:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:42,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:42,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:42,911 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:42,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-23 13:35:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:42,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 13:35:42,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 13:35:43,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-23 13:35:43,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726433793] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:43,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:43,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2021-11-23 13:35:43,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104762082] [2021-11-23 13:35:43,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:43,460 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-23 13:35:43,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:35:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:35:43,462 INFO L87 Difference]: Start difference. First operand 344 states and 449 transitions. cyclomatic complexity: 111 Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 6 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-23 13:35:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:43,668 INFO L93 Difference]: Finished difference Result 360 states and 459 transitions. [2021-11-23 13:35:43,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:35:43,669 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 360 states and 459 transitions. [2021-11-23 13:35:43,678 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 40 [2021-11-23 13:35:43,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 360 states to 360 states and 459 transitions. [2021-11-23 13:35:43,685 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 217 [2021-11-23 13:35:43,685 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 217 [2021-11-23 13:35:43,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 360 states and 459 transitions. [2021-11-23 13:35:43,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:43,691 INFO L681 BuchiCegarLoop]: Abstraction has 360 states and 459 transitions. [2021-11-23 13:35:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states and 459 transitions. [2021-11-23 13:35:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 321. [2021-11-23 13:35:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 213 states have (on average 1.1737089201877935) internal successors, (250), 230 states have internal predecessors, (250), 61 states have call successors, (62), 46 states have call predecessors, (62), 47 states have return successors, (98), 44 states have call predecessors, (98), 59 states have call successors, (98) [2021-11-23 13:35:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 410 transitions. [2021-11-23 13:35:43,714 INFO L704 BuchiCegarLoop]: Abstraction has 321 states and 410 transitions. [2021-11-23 13:35:43,714 INFO L587 BuchiCegarLoop]: Abstraction has 321 states and 410 transitions. [2021-11-23 13:35:43,714 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-23 13:35:43,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 321 states and 410 transitions. [2021-11-23 13:35:43,718 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 38 [2021-11-23 13:35:43,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:43,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:43,720 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:43,720 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:43,722 INFO L791 eck$LassoCheckResult]: Stem: 7933#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7934#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 7963#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 8007#fibo1ENTRY ~n := #in~n; 8110#L10 assume !(~n < 1); 8109#L12 assume !(1 == ~n); 8105#L15 call #t~ret4 := fibo2(~n - 1);< 8108#fibo2ENTRY ~n := #in~n; 8107#L20 assume !(~n < 1); 8106#L22 assume !(1 == ~n); 8101#L25 call #t~ret6 := fibo1(~n - 1);< 8104#fibo1ENTRY ~n := #in~n; 8103#L10 assume !(~n < 1); 8102#L12 assume !(1 == ~n); 8097#L15 call #t~ret4 := fibo2(~n - 1);< 8100#fibo2ENTRY ~n := #in~n; 8099#L20 assume !(~n < 1); 8098#L22 assume !(1 == ~n); 8093#L25 call #t~ret6 := fibo1(~n - 1);< 8096#fibo1ENTRY ~n := #in~n; 8095#L10 assume !(~n < 1); 8094#L12 assume !(1 == ~n); 8016#L15 call #t~ret4 := fibo2(~n - 1);< 8018#fibo2ENTRY ~n := #in~n; 8092#L20 assume !(~n < 1); 8079#L22 assume !(1 == ~n); 7977#L25 call #t~ret6 := fibo1(~n - 1);< 8041#fibo1ENTRY ~n := #in~n; 8075#L10 assume !(~n < 1); 8076#L12 assume !(1 == ~n); 8017#L15 call #t~ret4 := fibo2(~n - 1);< 8018#fibo2ENTRY ~n := #in~n; 8092#L20 assume !(~n < 1); 8079#L22 assume !(1 == ~n); 7977#L25 call #t~ret6 := fibo1(~n - 1);< 8041#fibo1ENTRY ~n := #in~n; 8077#L10 assume !(~n < 1); 8088#L12 assume 1 == ~n;#res := 1; 8252#fibo1FINAL assume true; 8251#fibo1EXIT >#46#return; 7942#L25-1 call #t~ret7 := fibo1(~n - 2);< 8216#fibo1ENTRY ~n := #in~n; 8253#L10 assume ~n < 1;#res := 0; 7941#fibo1FINAL assume true; 7943#fibo1EXIT >#48#return; 8214#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8213#fibo2FINAL assume true; 8117#fibo2EXIT >#50#return; 8118#L15-1 [2021-11-23 13:35:43,722 INFO L793 eck$LassoCheckResult]: Loop: 8118#L15-1 call #t~ret5 := fibo2(~n - 2);< 8129#fibo2ENTRY ~n := #in~n; 8173#L20 assume !(~n < 1); 8152#L22 assume !(1 == ~n); 8143#L25 call #t~ret6 := fibo1(~n - 1);< 8150#fibo1ENTRY ~n := #in~n; 8188#L10 assume !(~n < 1); 8185#L12 assume !(1 == ~n); 8125#L15 call #t~ret4 := fibo2(~n - 1);< 8137#fibo2ENTRY ~n := #in~n; 8183#L20 assume !(~n < 1); 8178#L22 assume !(1 == ~n); 8179#L25 call #t~ret6 := fibo1(~n - 1);< 8203#fibo1ENTRY ~n := #in~n; 8206#L10 assume !(~n < 1); 8205#L12 assume 1 == ~n;#res := 1; 8204#fibo1FINAL assume true; 8202#fibo1EXIT >#46#return; 8147#L25-1 call #t~ret7 := fibo1(~n - 2);< 8181#fibo1ENTRY ~n := #in~n; 8224#L10 assume ~n < 1;#res := 0; 8155#fibo1FINAL assume true; 8180#fibo1EXIT >#48#return; 8177#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 8175#fibo2FINAL assume true; 8164#fibo2EXIT >#50#return; 8118#L15-1 [2021-11-23 13:35:43,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:43,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1654199334, now seen corresponding path program 2 times [2021-11-23 13:35:43,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:43,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420016987] [2021-11-23 13:35:43,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:43,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:43,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-23 13:35:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:44,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:35:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:44,022 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 13:35:44,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:44,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420016987] [2021-11-23 13:35:44,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420016987] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:44,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586866253] [2021-11-23 13:35:44,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:35:44,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:44,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:44,025 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:44,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-23 13:35:44,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:35:44,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:35:44,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 13:35:44,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:35:44,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:35:44,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586866253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:44,575 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:44,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 25 [2021-11-23 13:35:44,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752688965] [2021-11-23 13:35:44,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:44,576 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:35:44,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 2 times [2021-11-23 13:35:44,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:44,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605665494] [2021-11-23 13:35:44,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:44,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:44,581 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:44,588 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:45,057 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:45,058 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:45,058 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:45,058 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:45,058 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:35:45,058 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:45,058 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:45,058 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:45,058 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2021-11-23 13:35:45,058 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:45,058 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:45,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,065 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,078 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:45,168 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:45,168 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:35:45,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:45,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:45,169 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:45,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-11-23 13:35:45,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:45,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:45,181 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:45,181 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:45,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-11-23 13:35:45,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:45,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:45,205 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:45,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-11-23 13:35:45,207 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:45,208 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:45,217 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:45,217 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:45,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-11-23 13:35:45,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:45,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:45,242 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:45,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-11-23 13:35:45,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:45,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:45,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:45,253 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:45,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-11-23 13:35:45,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:45,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:45,277 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:45,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-11-23 13:35:45,279 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:45,279 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:45,288 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:45,289 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:45,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:45,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:45,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:45,313 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:45,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-11-23 13:35:45,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:45,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:45,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:45,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:45,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:45,353 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:45,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-11-23 13:35:45,354 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:35:45,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:47,013 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:35:47,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-11-23 13:35:47,016 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:47,016 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:47,016 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:47,016 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:47,017 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:35:47,017 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:47,017 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:47,017 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:47,017 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2021-11-23 13:35:47,017 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:47,017 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:47,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:47,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:47,123 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:35:47,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:47,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:47,124 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:47,134 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 [2021-11-23 13:35:47,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-11-23 13:35:47,144 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:47,144 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:47,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:47,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:47,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:47,146 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:47,146 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:47,156 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:47,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:47,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:47,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:47,181 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:47,183 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 [2021-11-23 13:35:47,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-11-23 13:35:47,192 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:47,192 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:47,192 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:47,192 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:47,192 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:47,193 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:47,193 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:47,194 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:47,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-11-23 13:35:47,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:47,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:47,219 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:47,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-11-23 13:35:47,220 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 [2021-11-23 13:35:47,229 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:47,229 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:47,229 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:47,229 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:47,229 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:47,230 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:47,230 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:47,231 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:47,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Ended with exit code 0 [2021-11-23 13:35:47,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:47,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:47,255 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:47,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-11-23 13:35:47,259 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:35:47,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:47,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:47,267 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:47,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:47,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:47,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:47,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:47,269 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:47,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:47,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:47,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:47,294 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:47,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-11-23 13:35:47,296 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 [2021-11-23 13:35:47,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:47,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:47,305 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:47,305 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:47,305 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:47,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:47,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:47,310 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:35:47,314 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:35:47,314 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:35:47,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:47,315 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:47,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-11-23 13:35:47,316 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:35:47,316 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:35:47,316 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:35:47,316 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-23 13:35:47,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:47,340 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:35:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:47,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 13:35:47,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:47,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 13:35:47,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 13:35:48,117 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2021-11-23 13:35:48,117 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 321 states and 410 transitions. cyclomatic complexity: 95 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 13:35:48,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:48,657 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 321 states and 410 transitions. cyclomatic complexity: 95. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 1107 states and 1416 transitions. Complement of second has 46 states. [2021-11-23 13:35:48,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2021-11-23 13:35:48,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 13:35:48,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 68 transitions. [2021-11-23 13:35:48,659 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 26 letters. [2021-11-23 13:35:48,664 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:48,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 74 letters. Loop has 26 letters. [2021-11-23 13:35:48,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:48,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 68 transitions. Stem has 48 letters. Loop has 52 letters. [2021-11-23 13:35:48,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:48,670 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1107 states and 1416 transitions. [2021-11-23 13:35:48,693 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 86 [2021-11-23 13:35:48,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1107 states to 1020 states and 1321 transitions. [2021-11-23 13:35:48,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 429 [2021-11-23 13:35:48,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 453 [2021-11-23 13:35:48,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1020 states and 1321 transitions. [2021-11-23 13:35:48,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:48,716 INFO L681 BuchiCegarLoop]: Abstraction has 1020 states and 1321 transitions. [2021-11-23 13:35:48,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states and 1321 transitions. [2021-11-23 13:35:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 963. [2021-11-23 13:35:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 631 states have (on average 1.1933438985736926) internal successors, (753), 691 states have internal predecessors, (753), 184 states have call successors, (190), 132 states have call predecessors, (190), 148 states have return successors, (305), 139 states have call predecessors, (305), 182 states have call successors, (305) [2021-11-23 13:35:48,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1248 transitions. [2021-11-23 13:35:48,761 INFO L704 BuchiCegarLoop]: Abstraction has 963 states and 1248 transitions. [2021-11-23 13:35:48,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:48,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-23 13:35:48,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2021-11-23 13:35:48,763 INFO L87 Difference]: Start difference. First operand 963 states and 1248 transitions. Second operand has 26 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 18 states have internal predecessors, (45), 12 states have call successors, (13), 8 states have call predecessors, (13), 3 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 13:35:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:49,732 INFO L93 Difference]: Finished difference Result 1028 states and 1212 transitions. [2021-11-23 13:35:49,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-23 13:35:49,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1028 states and 1212 transitions. [2021-11-23 13:35:49,752 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 90 [2021-11-23 13:35:49,759 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1028 states to 450 states and 523 transitions. [2021-11-23 13:35:49,760 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 289 [2021-11-23 13:35:49,760 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 289 [2021-11-23 13:35:49,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 450 states and 523 transitions. [2021-11-23 13:35:49,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:49,761 INFO L681 BuchiCegarLoop]: Abstraction has 450 states and 523 transitions. [2021-11-23 13:35:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states and 523 transitions. [2021-11-23 13:35:49,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 402. [2021-11-23 13:35:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 266 states have (on average 1.112781954887218) internal successors, (296), 283 states have internal predecessors, (296), 83 states have call successors, (84), 63 states have call predecessors, (84), 53 states have return successors, (88), 55 states have call predecessors, (88), 66 states have call successors, (88) [2021-11-23 13:35:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 468 transitions. [2021-11-23 13:35:49,780 INFO L704 BuchiCegarLoop]: Abstraction has 402 states and 468 transitions. [2021-11-23 13:35:49,780 INFO L587 BuchiCegarLoop]: Abstraction has 402 states and 468 transitions. [2021-11-23 13:35:49,780 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-23 13:35:49,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 402 states and 468 transitions. [2021-11-23 13:35:49,785 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 64 [2021-11-23 13:35:49,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:49,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:49,787 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:49,787 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:49,791 INFO L791 eck$LassoCheckResult]: Stem: 12047#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 12048#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 12076#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 12112#fibo1ENTRY ~n := #in~n; 12188#L10 assume !(~n < 1); 12187#L12 assume !(1 == ~n); 12183#L15 call #t~ret4 := fibo2(~n - 1);< 12186#fibo2ENTRY ~n := #in~n; 12185#L20 assume !(~n < 1); 12184#L22 assume !(1 == ~n); 12179#L25 call #t~ret6 := fibo1(~n - 1);< 12182#fibo1ENTRY ~n := #in~n; 12181#L10 assume !(~n < 1); 12180#L12 assume !(1 == ~n); 12175#L15 call #t~ret4 := fibo2(~n - 1);< 12178#fibo2ENTRY ~n := #in~n; 12177#L20 assume !(~n < 1); 12176#L22 assume !(1 == ~n); 12170#L25 call #t~ret6 := fibo1(~n - 1);< 12174#fibo1ENTRY ~n := #in~n; 12173#L10 assume !(~n < 1); 12172#L12 assume !(1 == ~n); 12106#L15 call #t~ret4 := fibo2(~n - 1);< 12171#fibo2ENTRY ~n := #in~n; 12212#L20 assume !(~n < 1); 12210#L22 assume !(1 == ~n); 12155#L25 call #t~ret6 := fibo1(~n - 1);< 12215#fibo1ENTRY ~n := #in~n; 12216#L10 assume !(~n < 1); 12230#L12 assume !(1 == ~n); 12226#L15 call #t~ret4 := fibo2(~n - 1);< 12227#fibo2ENTRY ~n := #in~n; 12232#L20 assume !(~n < 1); 12231#L22 assume 1 == ~n;#res := 1; 12229#fibo2FINAL assume true; 12225#fibo2EXIT >#50#return; 12222#L15-1 call #t~ret5 := fibo2(~n - 2);< 12223#fibo2ENTRY ~n := #in~n; 12228#L20 assume ~n < 1;#res := 0; 12224#fibo2FINAL assume true; 12221#fibo2EXIT >#52#return; 12220#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 12219#fibo1FINAL assume true; 12154#fibo1EXIT >#46#return; 12139#L25-1 call #t~ret7 := fibo1(~n - 2);< 12068#fibo1ENTRY ~n := #in~n; 12138#L10 assume !(~n < 1); 12140#L12 assume !(1 == ~n); 12067#L15 call #t~ret4 := fibo2(~n - 1);< 12132#fibo2ENTRY ~n := #in~n; 12133#L20 assume !(~n < 1); 12122#L22 assume 1 == ~n;#res := 1; 12123#fibo2FINAL assume true; 12274#fibo2EXIT >#50#return; 12085#L15-1 [2021-11-23 13:35:49,791 INFO L793 eck$LassoCheckResult]: Loop: 12085#L15-1 call #t~ret5 := fibo2(~n - 2);< 12272#fibo2ENTRY ~n := #in~n; 12302#L20 assume !(~n < 1); 12264#L22 assume !(1 == ~n); 12251#L25 call #t~ret6 := fibo1(~n - 1);< 12259#fibo1ENTRY ~n := #in~n; 12289#L10 assume !(~n < 1); 12282#L12 assume !(1 == ~n); 12089#L15 call #t~ret4 := fibo2(~n - 1);< 12279#fibo2ENTRY ~n := #in~n; 12303#L20 assume !(~n < 1); 12376#L22 assume 1 == ~n;#res := 1; 12375#fibo2FINAL assume true; 12277#fibo2EXIT >#50#return; 12085#L15-1 [2021-11-23 13:35:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash 628833608, now seen corresponding path program 1 times [2021-11-23 13:35:49,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:49,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365211119] [2021-11-23 13:35:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:49,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-23 13:35:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:35:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-23 13:35:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:50,045 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 40 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 13:35:50,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:50,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365211119] [2021-11-23 13:35:50,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365211119] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:50,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623182587] [2021-11-23 13:35:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:50,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:50,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:50,048 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:50,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-23 13:35:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:50,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 13:35:50,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:50,289 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:35:50,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 47 proven. 36 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 13:35:50,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623182587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:50,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:50,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 21 [2021-11-23 13:35:50,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117356066] [2021-11-23 13:35:50,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:50,566 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:35:50,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1489002864, now seen corresponding path program 1 times [2021-11-23 13:35:50,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:50,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31208747] [2021-11-23 13:35:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:50,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:50,571 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:50,577 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:50,823 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:50,823 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:50,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:50,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:50,824 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:35:50,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:50,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:50,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:50,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2021-11-23 13:35:50,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:50,824 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:50,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,840 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,843 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:50,900 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:50,900 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:35:50,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:50,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:50,905 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:50,906 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:50,906 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:50,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-11-23 13:35:50,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:50,926 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:50,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:50,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:50,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:50,952 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:50,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-11-23 13:35:50,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:50,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:50,963 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:50,964 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:50,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Ended with exit code 0 [2021-11-23 13:35:50,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:50,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:50,989 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:50,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-11-23 13:35:50,990 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:50,990 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:51,000 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:51,000 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:51,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2021-11-23 13:35:51,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:51,025 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:51,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-11-23 13:35:51,027 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:51,027 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:51,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-11-23 13:35:51,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:51,061 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:51,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-11-23 13:35:51,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:35:51,063 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:52,251 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:35:52,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:52,254 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:52,254 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:52,254 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:52,254 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:52,254 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:35:52,254 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:52,255 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:52,255 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:52,255 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration8_Loop [2021-11-23 13:35:52,255 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:52,255 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:52,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:52,323 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:52,323 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:35:52,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:52,325 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:52,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-11-23 13:35:52,327 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 [2021-11-23 13:35:52,335 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:52,335 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:52,336 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:52,336 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:52,336 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:52,336 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:52,336 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:52,337 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:52,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:52,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:52,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:52,363 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:52,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-11-23 13:35:52,364 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 [2021-11-23 13:35:52,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:52,373 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:52,373 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:52,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:52,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:52,373 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:52,373 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:52,375 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:52,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:52,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:52,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:52,399 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:52,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-11-23 13:35:52,400 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 [2021-11-23 13:35:52,409 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:52,409 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:52,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:52,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:52,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:52,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:52,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:52,413 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:35:52,416 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:35:52,416 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:35:52,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:52,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:52,418 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:52,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-11-23 13:35:52,419 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:35:52,419 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:35:52,419 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:35:52,419 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-23 13:35:52,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2021-11-23 13:35:52,443 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:35:52,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:52,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 13:35:52,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:53,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:35:53,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:53,156 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 [2021-11-23 13:35:53,156 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 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) [2021-11-23 13:35:53,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Ended with exit code 0 [2021-11-23 13:35:53,527 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. 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 553 states and 633 transitions. Complement of second has 40 states. [2021-11-23 13:35:53,537 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 [2021-11-23 13:35:53,538 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) [2021-11-23 13:35:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 50 transitions. [2021-11-23 13:35:53,539 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 50 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-23 13:35:53,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:53,540 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:35:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:53,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 13:35:53,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:54,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:35:54,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:54,216 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 [2021-11-23 13:35:54,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 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) [2021-11-23 13:35:54,474 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. 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 475 states and 545 transitions. Complement of second has 26 states. [2021-11-23 13:35:54,478 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 [2021-11-23 13:35:54,479 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) [2021-11-23 13:35:54,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 31 transitions. [2021-11-23 13:35:54,480 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 31 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-23 13:35:54,481 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:54,481 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:35:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:54,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 13:35:54,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:55,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 13:35:55,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:55,202 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 [2021-11-23 13:35:55,203 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74 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) [2021-11-23 13:35:55,606 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 402 states and 468 transitions. cyclomatic complexity: 74. 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 1507 states and 1740 transitions. Complement of second has 102 states. [2021-11-23 13:35:55,607 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 [2021-11-23 13:35:55,608 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) [2021-11-23 13:35:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2021-11-23 13:35:55,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 14 letters. [2021-11-23 13:35:55,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:55,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 68 letters. Loop has 14 letters. [2021-11-23 13:35:55,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:55,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 54 letters. Loop has 28 letters. [2021-11-23 13:35:55,612 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:55,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1507 states and 1740 transitions. [2021-11-23 13:35:55,644 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 166 [2021-11-23 13:35:55,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1507 states to 892 states and 1055 transitions. [2021-11-23 13:35:55,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 415 [2021-11-23 13:35:55,660 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 462 [2021-11-23 13:35:55,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 892 states and 1055 transitions. [2021-11-23 13:35:55,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:55,660 INFO L681 BuchiCegarLoop]: Abstraction has 892 states and 1055 transitions. [2021-11-23 13:35:55,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states and 1055 transitions. [2021-11-23 13:35:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 798. [2021-11-23 13:35:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 525 states have (on average 1.1123809523809525) internal successors, (584), 569 states have internal predecessors, (584), 160 states have call successors, (170), 121 states have call predecessors, (170), 113 states have return successors, (181), 107 states have call predecessors, (181), 136 states have call successors, (181) [2021-11-23 13:35:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 935 transitions. [2021-11-23 13:35:55,692 INFO L704 BuchiCegarLoop]: Abstraction has 798 states and 935 transitions. [2021-11-23 13:35:55,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 13:35:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2021-11-23 13:35:55,694 INFO L87 Difference]: Start difference. First operand 798 states and 935 transitions. Second operand has 21 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 14 states have internal predecessors, (41), 10 states have call successors, (12), 8 states have call predecessors, (12), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-23 13:35:56,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:56,227 INFO L93 Difference]: Finished difference Result 617 states and 721 transitions. [2021-11-23 13:35:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 13:35:56,228 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 617 states and 721 transitions. [2021-11-23 13:35:56,237 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2021-11-23 13:35:56,244 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 617 states to 496 states and 589 transitions. [2021-11-23 13:35:56,244 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 281 [2021-11-23 13:35:56,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 305 [2021-11-23 13:35:56,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 589 transitions. [2021-11-23 13:35:56,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:35:56,245 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 589 transitions. [2021-11-23 13:35:56,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 589 transitions. [2021-11-23 13:35:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 491. [2021-11-23 13:35:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 320 states have (on average 1.1125) internal successors, (356), 350 states have internal predecessors, (356), 97 states have call successors, (103), 69 states have call predecessors, (103), 74 states have return successors, (122), 71 states have call predecessors, (122), 88 states have call successors, (122) [2021-11-23 13:35:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 581 transitions. [2021-11-23 13:35:56,265 INFO L704 BuchiCegarLoop]: Abstraction has 491 states and 581 transitions. [2021-11-23 13:35:56,265 INFO L587 BuchiCegarLoop]: Abstraction has 491 states and 581 transitions. [2021-11-23 13:35:56,265 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-23 13:35:56,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 491 states and 581 transitions. [2021-11-23 13:35:56,271 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 40 [2021-11-23 13:35:56,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:35:56,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:35:56,272 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:56,272 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:56,273 INFO L791 eck$LassoCheckResult]: Stem: 17665#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 17666#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 17700#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 17741#fibo1ENTRY ~n := #in~n; 17805#L10 assume !(~n < 1); 17803#L12 assume !(1 == ~n); 17800#L15 call #t~ret4 := fibo2(~n - 1);< 17801#fibo2ENTRY ~n := #in~n; 17821#L20 assume !(~n < 1); 17815#L22 assume !(1 == ~n); 17811#L25 call #t~ret6 := fibo1(~n - 1);< 17812#fibo1ENTRY ~n := #in~n; 17860#L10 assume !(~n < 1); 17859#L12 assume !(1 == ~n); 17850#L15 call #t~ret4 := fibo2(~n - 1);< 17851#fibo2ENTRY ~n := #in~n; 17878#L20 assume !(~n < 1); 17875#L22 assume !(1 == ~n); 17872#L25 call #t~ret6 := fibo1(~n - 1);< 17873#fibo1ENTRY ~n := #in~n; 17895#L10 assume !(~n < 1); 17893#L12 assume !(1 == ~n); 17891#L15 call #t~ret4 := fibo2(~n - 1);< 17892#fibo2ENTRY ~n := #in~n; 17906#L20 assume !(~n < 1); 17904#L22 assume !(1 == ~n); 17901#L25 call #t~ret6 := fibo1(~n - 1);< 17902#fibo1ENTRY ~n := #in~n; 17923#L10 assume !(~n < 1); 17921#L12 assume !(1 == ~n); 17918#L15 call #t~ret4 := fibo2(~n - 1);< 17919#fibo2ENTRY ~n := #in~n; 17926#L20 assume !(~n < 1); 17922#L22 assume 1 == ~n;#res := 1; 17920#fibo2FINAL assume true; 17917#fibo2EXIT >#50#return; 17913#L15-1 call #t~ret5 := fibo2(~n - 2);< 17914#fibo2ENTRY ~n := #in~n; 17953#L20 assume ~n < 1;#res := 0; 17952#fibo2FINAL assume true; 17912#fibo2EXIT >#52#return; 17910#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17908#fibo1FINAL assume true; 17900#fibo1EXIT >#46#return; 17898#L25-1 call #t~ret7 := fibo1(~n - 2);< 17899#fibo1ENTRY ~n := #in~n; 17907#L10 assume !(~n < 1); 17905#L12 assume 1 == ~n;#res := 1; 17903#fibo1FINAL assume true; 17897#fibo1EXIT >#48#return; 17896#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 17894#fibo2FINAL assume true; 17890#fibo2EXIT >#50#return; 17685#L15-1 call #t~ret5 := fibo2(~n - 2);< 17877#fibo2ENTRY ~n := #in~n; 17915#L20 assume !(~n < 1); 17911#L22 assume 1 == ~n;#res := 1; 17909#fibo2FINAL assume true; 17889#fibo2EXIT >#52#return; 17876#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 17888#fibo1FINAL assume true; 17871#fibo1EXIT >#46#return; 17841#L25-1 call #t~ret7 := fibo1(~n - 2);< 17848#fibo1ENTRY ~n := #in~n; 17966#L10 assume !(~n < 1); 17931#L12 assume !(1 == ~n); 17687#L15 call #t~ret4 := fibo2(~n - 1);< 17925#fibo2ENTRY [2021-11-23 13:35:56,273 INFO L793 eck$LassoCheckResult]: Loop: 17925#fibo2ENTRY ~n := #in~n; 17934#L20 assume !(~n < 1); 17930#L22 assume !(1 == ~n); 17737#L25 call #t~ret6 := fibo1(~n - 1);< 18088#fibo1ENTRY ~n := #in~n; 17933#L10 assume !(~n < 1); 17928#L12 assume !(1 == ~n); 17683#L15 call #t~ret4 := fibo2(~n - 1);< 17925#fibo2ENTRY [2021-11-23 13:35:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 930400901, now seen corresponding path program 1 times [2021-11-23 13:35:56,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:56,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321419267] [2021-11-23 13:35:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:56,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-23 13:35:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:35:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:35:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-23 13:35:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-11-23 13:35:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-23 13:35:56,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:56,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321419267] [2021-11-23 13:35:56,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321419267] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:56,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479369725] [2021-11-23 13:35:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:56,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:56,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:56,653 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:56,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-23 13:35:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 13:35:56,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 13:35:56,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 37 proven. 59 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-23 13:35:57,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479369725] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:57,245 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:57,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 25 [2021-11-23 13:35:57,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470271150] [2021-11-23 13:35:57,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:57,246 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:35:57,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:57,246 INFO L85 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2021-11-23 13:35:57,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:57,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195792037] [2021-11-23 13:35:57,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:57,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:57,252 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:35:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:35:57,255 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:35:57,384 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:57,384 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:57,385 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:57,385 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:57,385 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:35:57,385 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:57,385 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:57,385 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:57,385 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2021-11-23 13:35:57,385 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:57,385 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:57,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,407 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,412 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,469 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:57,470 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:35:57,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:57,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:57,471 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:57,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-11-23 13:35:57,475 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:57,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:57,486 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:35:57,486 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:35:57,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:57,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:57,512 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:57,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-11-23 13:35:57,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:35:57,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:57,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Ended with exit code 0 [2021-11-23 13:35:57,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:57,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:57,554 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:57,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-11-23 13:35:57,556 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:35:57,556 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:35:57,635 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:35:57,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Ended with exit code 0 [2021-11-23 13:35:57,638 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:35:57,638 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:35:57,639 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:35:57,639 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:35:57,639 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:35:57,639 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:57,639 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:35:57,639 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:35:57,639 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration9_Loop [2021-11-23 13:35:57,639 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:35:57,639 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:35:57,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,649 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:35:57,713 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:35:57,714 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:35:57,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:57,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:57,715 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:57,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-11-23 13:35:57,716 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 [2021-11-23 13:35:57,725 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:57,725 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:57,725 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:57,725 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:57,725 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:57,726 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:57,726 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:57,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:35:57,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:57,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:57,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:57,752 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:57,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-11-23 13:35:57,753 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 [2021-11-23 13:35:57,762 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:35:57,762 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:35:57,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:35:57,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:35:57,762 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:35:57,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:35:57,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:35:57,764 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:35:57,767 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:35:57,767 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:35:57,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:35:57,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:57,768 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:57,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Waiting until timeout for monitored process [2021-11-23 13:35:57,769 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:35:57,769 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:35:57,769 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:35:57,770 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-11-23 13:35:57,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Ended with exit code 0 [2021-11-23 13:35:57,793 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:35:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:57,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 13:35:57,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:58,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (92)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:58,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:35:58,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:58,757 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 [2021-11-23 13:35:58,758 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:35:58,850 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 516 states and 606 transitions. Complement of second has 15 states. [2021-11-23 13:35:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-11-23 13:35:58,852 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:35:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-11-23 13:35:58,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-23 13:35:58,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:58,853 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:35:58,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:58,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:58,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 13:35:58,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:59,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:35:59,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:59,842 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 [2021-11-23 13:35:59,842 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:35:59,952 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 516 states and 606 transitions. Complement of second has 15 states. [2021-11-23 13:35:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 2 stem states 4 non-accepting loop states 1 accepting loop states [2021-11-23 13:35:59,953 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:35:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 17 transitions. [2021-11-23 13:35:59,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 17 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-23 13:35:59,954 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:35:59,954 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:35:59,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:00,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 13:36:00,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:00,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:36:00,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:00,895 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 [2021-11-23 13:36:00,896 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:36:01,058 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 491 states and 581 transitions. cyclomatic complexity: 96. 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 764 states and 882 transitions. Complement of second has 25 states. [2021-11-23 13:36:01,058 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 [2021-11-23 13:36:01,059 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, (12), 4 states have call predecessors, (12), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-23 13:36:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2021-11-23 13:36:01,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 8 letters. [2021-11-23 13:36:01,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:01,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 75 letters. Loop has 8 letters. [2021-11-23 13:36:01,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:01,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 67 letters. Loop has 16 letters. [2021-11-23 13:36:01,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:01,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 764 states and 882 transitions. [2021-11-23 13:36:01,072 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-11-23 13:36:01,080 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 764 states to 568 states and 666 transitions. [2021-11-23 13:36:01,080 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 298 [2021-11-23 13:36:01,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 328 [2021-11-23 13:36:01,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 568 states and 666 transitions. [2021-11-23 13:36:01,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:01,082 INFO L681 BuchiCegarLoop]: Abstraction has 568 states and 666 transitions. [2021-11-23 13:36:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states and 666 transitions. [2021-11-23 13:36:01,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 539. [2021-11-23 13:36:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 357 states have (on average 1.112044817927171) internal successors, (397), 388 states have internal predecessors, (397), 104 states have call successors, (110), 77 states have call predecessors, (110), 78 states have return successors, (125), 73 states have call predecessors, (125), 94 states have call successors, (125) [2021-11-23 13:36:01,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 632 transitions. [2021-11-23 13:36:01,101 INFO L704 BuchiCegarLoop]: Abstraction has 539 states and 632 transitions. [2021-11-23 13:36:01,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 13:36:01,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-23 13:36:01,103 INFO L87 Difference]: Start difference. First operand 539 states and 632 transitions. Second operand has 25 states, 21 states have (on average 2.761904761904762) internal successors, (58), 19 states have internal predecessors, (58), 13 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (16), 10 states have call predecessors, (16), 8 states have call successors, (16) [2021-11-23 13:36:01,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:01,830 INFO L93 Difference]: Finished difference Result 683 states and 845 transitions. [2021-11-23 13:36:01,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 13:36:01,831 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 683 states and 845 transitions. [2021-11-23 13:36:01,840 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-11-23 13:36:01,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 683 states to 623 states and 768 transitions. [2021-11-23 13:36:01,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 335 [2021-11-23 13:36:01,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 335 [2021-11-23 13:36:01,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 623 states and 768 transitions. [2021-11-23 13:36:01,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-23 13:36:01,850 INFO L681 BuchiCegarLoop]: Abstraction has 623 states and 768 transitions. [2021-11-23 13:36:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states and 768 transitions. [2021-11-23 13:36:01,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 575. [2021-11-23 13:36:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 377 states have (on average 1.1114058355437666) internal successors, (419), 403 states have internal predecessors, (419), 115 states have call successors, (121), 80 states have call predecessors, (121), 83 states have return successors, (167), 91 states have call predecessors, (167), 99 states have call successors, (167) [2021-11-23 13:36:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 707 transitions. [2021-11-23 13:36:01,873 INFO L704 BuchiCegarLoop]: Abstraction has 575 states and 707 transitions. [2021-11-23 13:36:01,874 INFO L587 BuchiCegarLoop]: Abstraction has 575 states and 707 transitions. [2021-11-23 13:36:01,874 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-23 13:36:01,874 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 575 states and 707 transitions. [2021-11-23 13:36:01,879 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-11-23 13:36:01,879 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-23 13:36:01,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-23 13:36:01,881 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] [2021-11-23 13:36:01,881 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:01,882 INFO L791 eck$LassoCheckResult]: Stem: 22504#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 22505#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 8; 22536#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 22576#fibo1ENTRY ~n := #in~n; 22609#L10 assume !(~n < 1); 22607#L12 assume !(1 == ~n); 22604#L15 call #t~ret4 := fibo2(~n - 1);< 22605#fibo2ENTRY ~n := #in~n; 22619#L20 assume !(~n < 1); 22617#L22 assume !(1 == ~n); 22614#L25 call #t~ret6 := fibo1(~n - 1);< 22615#fibo1ENTRY ~n := #in~n; 22638#L10 assume !(~n < 1); 22636#L12 assume !(1 == ~n); 22633#L15 call #t~ret4 := fibo2(~n - 1);< 22634#fibo2ENTRY ~n := #in~n; 22657#L20 assume !(~n < 1); 22655#L22 assume !(1 == ~n); 22652#L25 call #t~ret6 := fibo1(~n - 1);< 22653#fibo1ENTRY ~n := #in~n; 22675#L10 assume !(~n < 1); 22673#L12 assume !(1 == ~n); 22670#L15 call #t~ret4 := fibo2(~n - 1);< 22671#fibo2ENTRY ~n := #in~n; 22688#L20 assume !(~n < 1); 22685#L22 assume !(1 == ~n); 22681#L25 call #t~ret6 := fibo1(~n - 1);< 22682#fibo1ENTRY ~n := #in~n; 22700#L10 assume !(~n < 1); 22698#L12 assume !(1 == ~n); 22694#L15 call #t~ret4 := fibo2(~n - 1);< 22695#fibo2ENTRY ~n := #in~n; 22701#L20 assume !(~n < 1); 22699#L22 assume 1 == ~n;#res := 1; 22697#fibo2FINAL assume true; 22693#fibo2EXIT >#50#return; 22690#L15-1 call #t~ret5 := fibo2(~n - 2);< 22691#fibo2ENTRY ~n := #in~n; 22696#L20 assume ~n < 1;#res := 0; 22692#fibo2FINAL assume true; 22689#fibo2EXIT >#52#return; 22687#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 22684#fibo1FINAL assume true; 22680#fibo1EXIT >#46#return; 22677#L25-1 call #t~ret7 := fibo1(~n - 2);< 22678#fibo1ENTRY ~n := #in~n; 22686#L10 assume !(~n < 1); 22683#L12 assume 1 == ~n;#res := 1; 22679#fibo1FINAL assume true; 22676#fibo1EXIT >#48#return; 22674#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 22672#fibo2FINAL assume true; 22669#fibo2EXIT >#50#return; 22666#L15-1 call #t~ret5 := fibo2(~n - 2);< 22668#fibo2ENTRY ~n := #in~n; 22738#L20 assume !(~n < 1); 22735#L22 assume !(1 == ~n); 22733#L25 call #t~ret6 := fibo1(~n - 1);< 22734#fibo1ENTRY ~n := #in~n; 22918#L10 assume !(~n < 1); 22919#L12 assume !(1 == ~n); 22514#L15 call #t~ret4 := fibo2(~n - 1);< 22978#fibo2ENTRY ~n := #in~n; 22565#L20 assume !(~n < 1); 22510#L22 assume !(1 == ~n); 22513#L25 call #t~ret6 := fibo1(~n - 1);< 23057#fibo1ENTRY ~n := #in~n; 23056#L10 assume !(~n < 1); 23055#L12 assume !(1 == ~n); 22546#L15 [2021-11-23 13:36:01,882 INFO L793 eck$LassoCheckResult]: Loop: 22546#L15 call #t~ret4 := fibo2(~n - 1);< 23005#fibo2ENTRY ~n := #in~n; 23006#L20 assume !(~n < 1); 23058#L22 assume !(1 == ~n); 23007#L25 call #t~ret6 := fibo1(~n - 1);< 23057#fibo1ENTRY ~n := #in~n; 23056#L10 assume !(~n < 1); 23055#L12 assume !(1 == ~n); 22546#L15 [2021-11-23 13:36:01,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:01,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1054902100, now seen corresponding path program 2 times [2021-11-23 13:36:01,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:01,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315993302] [2021-11-23 13:36:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:01,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:02,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-23 13:36:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:36:02,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:02,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-23 13:36:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:02,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-23 13:36:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:02,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-11-23 13:36:02,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 13:36:02,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:02,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315993302] [2021-11-23 13:36:02,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315993302] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:36:02,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836405850] [2021-11-23 13:36:02,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:36:02,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:36:02,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:02,115 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:36:02,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-11-23 13:36:02,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 13:36:02,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:36:02,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 13:36:02,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 13:36:02,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:36:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 13:36:02,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836405850] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:36:02,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:36:02,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 20 [2021-11-23 13:36:02,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204959550] [2021-11-23 13:36:02,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:36:02,600 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-23 13:36:02,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:02,601 INFO L85 PathProgramCache]: Analyzing trace with hash 519237434, now seen corresponding path program 4 times [2021-11-23 13:36:02,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:02,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585948328] [2021-11-23 13:36:02,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:02,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:02,606 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:36:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:36:02,609 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:36:02,761 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:02,761 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:02,761 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:02,761 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:02,761 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-23 13:36:02,761 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:02,761 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:02,761 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:02,761 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2021-11-23 13:36:02,761 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:02,762 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:02,762 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,766 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,784 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:02,856 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:02,856 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-23 13:36:02,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:02,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:02,861 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:02,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:02,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:02,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-11-23 13:36:02,885 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-23 13:36:02,885 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-23 13:36:02,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:02,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:02,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:02,919 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:02,922 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-23 13:36:02,922 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:02,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-11-23 13:36:03,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:03,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:03,006 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:03,008 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-23 13:36:03,008 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-23 13:36:03,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-11-23 13:36:05,371 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-23 13:36:05,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Ended with exit code 0 [2021-11-23 13:36:05,374 INFO L210 LassoAnalysis]: Preferences: [2021-11-23 13:36:05,374 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-23 13:36:05,375 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-23 13:36:05,375 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-23 13:36:05,375 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-23 13:36:05,375 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:05,375 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-23 13:36:05,375 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-23 13:36:05,375 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2021-11-23 13:36:05,375 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-23 13:36:05,375 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-23 13:36:05,376 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,384 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,393 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,395 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-23 13:36:05,467 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-23 13:36:05,467 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-23 13:36:05,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:05,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:05,468 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:05,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Waiting until timeout for monitored process [2021-11-23 13:36:05,469 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 [2021-11-23 13:36:05,477 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:05,477 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:05,478 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:05,478 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:05,478 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:05,478 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:05,478 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:05,479 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-23 13:36:05,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (97)] Ended with exit code 0 [2021-11-23 13:36:05,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:05,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:05,507 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:05,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-11-23 13:36:05,508 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-23 13:36:05,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-23 13:36:05,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-23 13:36:05,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-23 13:36:05,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-23 13:36:05,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-23 13:36:05,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-23 13:36:05,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-23 13:36:05,520 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-23 13:36:05,523 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-23 13:36:05,524 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-23 13:36:05,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-23 13:36:05,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:36:05,525 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-23 13:36:05,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-11-23 13:36:05,526 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-23 13:36:05,526 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-23 13:36:05,526 INFO L513 LassoAnalysis]: Proved termination. [2021-11-23 13:36:05,526 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-11-23 13:36:05,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:05,551 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-23 13:36:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:05,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:36:05,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:06,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:36:06,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:06,310 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 [2021-11-23 13:36:06,310 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 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) [2021-11-23 13:36:06,422 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. 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 606 states and 738 transitions. Complement of second has 19 states. [2021-11-23 13:36:06,422 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 [2021-11-23 13:36:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (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) [2021-11-23 13:36:06,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2021-11-23 13:36:06,424 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-23 13:36:06,424 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:06,424 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:36:06,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:06,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:06,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:06,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:36:06,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:07,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:36:07,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:07,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:07,259 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 [2021-11-23 13:36:07,259 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 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) [2021-11-23 13:36:07,402 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. 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 606 states and 738 transitions. Complement of second has 21 states. [2021-11-23 13:36:07,403 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 [2021-11-23 13:36:07,404 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) [2021-11-23 13:36:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 19 transitions. [2021-11-23 13:36:07,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 19 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-23 13:36:07,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:07,405 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-23 13:36:07,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:07,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 13:36:07,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:08,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 13:36:08,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:36:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:36:08,122 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 [2021-11-23 13:36:08,123 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137 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) [2021-11-23 13:36:08,268 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 575 states and 707 transitions. cyclomatic complexity: 137. 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 1123 states and 1346 transitions. Complement of second has 33 states. [2021-11-23 13:36:08,268 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 [2021-11-23 13:36:08,269 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) [2021-11-23 13:36:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-11-23 13:36:08,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2021-11-23 13:36:08,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:08,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2021-11-23 13:36:08,271 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:08,271 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2021-11-23 13:36:08,272 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-23 13:36:08,272 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1123 states and 1346 transitions. [2021-11-23 13:36:08,285 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:36:08,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1123 states to 0 states and 0 transitions. [2021-11-23 13:36:08,286 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-23 13:36:08,286 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-23 13:36:08,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-23 13:36:08,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:36:08,286 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:08,286 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:08,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:08,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 13:36:08,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-23 13:36:08,288 INFO L87 Difference]: Start difference. First operand 0 states and 0 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) [2021-11-23 13:36:08,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:08,288 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-23 13:36:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:36:08,289 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-23 13:36:08,289 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:36:08,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 13:36:08,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-23 13:36:08,289 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-23 13:36:08,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-23 13:36:08,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:36:08,290 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:08,290 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:08,290 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 13:36:08,290 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-23 13:36:08,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-23 13:36:08,291 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-23 13:36:08,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-23 13:36:08,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 01:36:08 BoogieIcfgContainer [2021-11-23 13:36:08,299 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-23 13:36:08,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:36:08,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:36:08,300 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:36:08,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:25" (3/4) ... [2021-11-23 13:36:08,304 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 13:36:08,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:36:08,305 INFO L158 Benchmark]: Toolchain (without parser) took 43265.54ms. Allocated memory was 94.4MB in the beginning and 224.4MB in the end (delta: 130.0MB). Free memory was 53.3MB in the beginning and 165.6MB in the end (delta: -112.3MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-11-23 13:36:08,305 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 94.4MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:08,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 330.06ms. Allocated memory is still 94.4MB. Free memory was 53.1MB in the beginning and 70.2MB in the end (delta: -17.1MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-11-23 13:36:08,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.05ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 68.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:36:08,307 INFO L158 Benchmark]: Boogie Preprocessor took 28.30ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 67.9MB in the end (delta: 921.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:08,307 INFO L158 Benchmark]: RCFGBuilder took 411.30ms. Allocated memory is still 94.4MB. Free memory was 67.8MB in the beginning and 59.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:36:08,307 INFO L158 Benchmark]: BuchiAutomizer took 42436.95ms. Allocated memory was 94.4MB in the beginning and 224.4MB in the end (delta: 130.0MB). Free memory was 59.0MB in the beginning and 165.6MB in the end (delta: -106.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2021-11-23 13:36:08,308 INFO L158 Benchmark]: Witness Printer took 4.63ms. Allocated memory is still 224.4MB. Free memory is still 165.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:36:08,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 94.4MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 330.06ms. Allocated memory is still 94.4MB. Free memory was 53.1MB in the beginning and 70.2MB in the end (delta: -17.1MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.05ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 68.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.30ms. Allocated memory is still 94.4MB. Free memory was 68.8MB in the beginning and 67.9MB in the end (delta: 921.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 411.30ms. Allocated memory is still 94.4MB. Free memory was 67.8MB in the beginning and 59.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 42436.95ms. Allocated memory was 94.4MB in the beginning and 224.4MB in the end (delta: 130.0MB). Free memory was 59.0MB in the beginning and 165.6MB in the end (delta: -106.7MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. * Witness Printer took 4.63ms. Allocated memory is still 224.4MB. Free memory is still 165.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (9 trivial, 3 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 deterministic module has affine ranking function n and consists of 13 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. 9 modules have a trivial ranking function, the largest among these consists of 26 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 42.3s and 11 iterations. TraceHistogramMax:7. Analysis of lassos took 22.5s. Construction of modules took 3.2s. Büchi inclusion checks took 15.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 14. Automata minimization 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 497 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.3s Buchi closure took 0.0s. Biggest automaton had 575 states and ocurred in iteration 9. Nontrivial modules had stage [3, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/19 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1375 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1332 mSDsluCounter, 2086 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1578 mSDsCounter, 817 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4141 IncrementalHoareTripleChecker+Invalid, 4958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 817 mSolverCounterUnsat, 508 mSDtfsCounter, 4141 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI3 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf94 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq183 hnf93 smp80 dnf100 smp100 tf110 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 32 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 8.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-23 13:36:08,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:08,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:08,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:08,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-11-23 13:36:09,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-11-23 13:36:09,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-11-23 13:36:09,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:09,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:09,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-23 13:36:10,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-23 13:36:10,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26914276-9606-4b6e-9c0e-4a8fb5271fc6/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE