./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 18:44:28,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:44:28,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:44:28,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:44:28,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:44:28,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:44:28,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:44:28,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:44:28,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:44:28,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:44:28,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:44:28,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:44:28,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:44:28,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:44:28,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:44:28,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:44:28,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:44:28,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:44:28,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:44:28,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:44:28,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:44:28,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:44:28,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:44:28,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:44:28,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:44:28,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:44:28,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:44:28,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:44:28,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:44:28,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:44:28,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:44:28,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:44:28,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:44:28,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:44:28,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:44:28,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:44:28,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:44:28,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:44:28,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:44:28,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:44:28,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:44:28,366 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-11-18 18:44:28,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:44:28,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:44:28,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:44:28,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:44:28,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:44:28,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:44:28,400 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:44:28,400 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-18 18:44:28,401 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-18 18:44:28,401 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-18 18:44:28,401 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-18 18:44:28,402 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-18 18:44:28,402 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-18 18:44:28,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:44:28,403 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:44:28,403 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:44:28,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:44:28,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:44:28,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:44:28,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-18 18:44:28,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-18 18:44:28,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-18 18:44:28,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:44:28,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:44:28,407 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-18 18:44:28,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:44:28,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-18 18:44:28,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:44:28,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:44:28,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:44:28,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:44:28,410 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-18 18:44:28,410 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_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb57cc67b4a5d1052a722feccb00a81098424cf4bc0bbd7bfe756405ab740d43 [2022-11-18 18:44:28,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:44:28,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:44:28,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:44:28,779 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:44:28,780 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:44:28,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2022-11-18 18:44:28,871 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/data/a8fad847c/53c04a1ff6904076a9b74aae74b10d90/FLAG8d9929b39 [2022-11-18 18:44:29,482 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:44:29,483 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c [2022-11-18 18:44:29,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/data/a8fad847c/53c04a1ff6904076a9b74aae74b10d90/FLAG8d9929b39 [2022-11-18 18:44:29,851 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/data/a8fad847c/53c04a1ff6904076a9b74aae74b10d90 [2022-11-18 18:44:29,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:44:29,856 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:44:29,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:44:29,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:44:29,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:44:29,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:44:29" (1/1) ... [2022-11-18 18:44:29,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d41967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:29, skipping insertion in model container [2022-11-18 18:44:29,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:44:29" (1/1) ... [2022-11-18 18:44:29,874 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:44:29,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:44:30,127 WARN L234 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_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2022-11-18 18:44:30,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:44:30,140 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:44:30,164 WARN L234 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_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/sv-benchmarks/c/recursive-simple/fibo_2calls_5-2.c[946,959] [2022-11-18 18:44:30,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:44:30,187 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:44:30,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30 WrapperNode [2022-11-18 18:44:30,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:44:30,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:44:30,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:44:30,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:44:30,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,230 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-18 18:44:30,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:44:30,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:44:30,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:44:30,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:44:30,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:44:30,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:44:30,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:44:30,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:44:30,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:30,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:30,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-18 18:44:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:44:30,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:44:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-18 18:44:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-18 18:44:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-18 18:44:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-18 18:44:30,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:44:30,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:44:30,456 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:44:30,458 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:44:30,610 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:44:30,627 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:44:30,641 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 18:44:30,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:30 BoogieIcfgContainer [2022-11-18 18:44:30,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:44:30,645 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-18 18:44:30,646 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-18 18:44:30,650 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-18 18:44:30,651 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:44:30,652 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 06:44:29" (1/3) ... [2022-11-18 18:44:30,653 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ffe6651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 06:44:30, skipping insertion in model container [2022-11-18 18:44:30,653 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:44:30,653 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30" (2/3) ... [2022-11-18 18:44:30,654 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6ffe6651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 06:44:30, skipping insertion in model container [2022-11-18 18:44:30,654 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-18 18:44:30,654 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:30" (3/3) ... [2022-11-18 18:44:30,656 INFO L332 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-2.c [2022-11-18 18:44:30,721 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-18 18:44:30,721 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-18 18:44:30,722 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-18 18:44:30,722 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-18 18:44:30,722 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-18 18:44:30,722 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-18 18:44:30,722 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-18 18:44:30,723 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-18 18:44:30,732 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:44:30,790 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-18 18:44:30,800 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:30,800 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:30,808 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 18:44:30,809 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:30,809 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-18 18:44:30,809 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-18 18:44:30,813 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-18 18:44:30,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:30,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:30,814 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-18 18:44:30,814 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:30,824 INFO L748 eck$LassoCheckResult]: Stem: 15#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); 6#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 := 5; 14#L39true call main_#t~ret8#1 := fibo1(main_~x~0#1);< 4#fibo1ENTRYtrue [2022-11-18 18:44:30,824 INFO L750 eck$LassoCheckResult]: Loop: 4#fibo1ENTRYtrue ~n := #in~n; 8#L10true assume !(~n < 1); 7#L12true assume !(1 == ~n); 9#L15true call #t~ret4 := fibo2(~n - 1);< 13#fibo2ENTRYtrue ~n := #in~n; 11#L20true assume !(~n < 1); 16#L22true assume !(1 == ~n); 22#L25true call #t~ret6 := fibo1(~n - 1);< 4#fibo1ENTRYtrue [2022-11-18 18:44:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:30,832 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2022-11-18 18:44:30,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:30,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790950274] [2022-11-18 18:44:30,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:30,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:30,960 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:30,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:31,019 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:31,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:31,024 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2022-11-18 18:44:31,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:31,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965588083] [2022-11-18 18:44:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:31,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:31,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:31,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:31,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2022-11-18 18:44:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:31,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016360055] [2022-11-18 18:44:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:31,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:31,111 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:31,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:31,392 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:44:31,393 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:44:31,393 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:44:31,394 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:44:31,394 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:44:31,394 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:31,394 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:44:31,395 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:44:31,395 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2022-11-18 18:44:31,395 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:44:31,395 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:44:31,440 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:31,468 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:31,484 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:31,488 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:31,491 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:31,495 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:31,499 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:31,502 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:31,605 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:44:31,607 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:44:31,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:31,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,632 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:31,632 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:31,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-18 18:44:31,666 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:31,666 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:31,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:31,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:31,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:31,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,692 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:31,692 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:31,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-18 18:44:31,723 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:31,723 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:31,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:31,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:31,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:31,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:31,748 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-18 18:44:31,779 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:31,779 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:31,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:31,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:31,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:31,793 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:31,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:31,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-18 18:44:31,835 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:31,835 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:31,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:31,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:31,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:31,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:31,860 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:31,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-18 18:44:31,891 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:31,891 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret6=0} Honda state: {fibo2_#t~ret6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:31,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:31,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:31,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:31,906 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:31,918 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:31,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-18 18:44:31,947 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:31,947 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:31,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:31,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:31,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:31,958 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:31,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:31,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-18 18:44:31,992 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:31,992 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:32,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:32,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,006 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:32,022 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:32,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-18 18:44:32,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:32,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,060 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-18 18:44:32,065 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:44:32,065 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:32,157 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:44:32,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-11-18 18:44:32,162 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:44:32,162 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:44:32,162 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:44:32,162 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:44:32,162 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:44:32,163 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,163 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:44:32,163 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:44:32,163 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration1_Loop [2022-11-18 18:44:32,163 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:44:32,163 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:44:32,166 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:32,175 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:32,180 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:32,186 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:32,204 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:32,207 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:32,218 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:32,234 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:32,308 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:44:32,314 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:44:32,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,320 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,331 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:32,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-18 18:44:32,347 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:32,347 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:32,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:32,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:32,348 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:32,351 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:32,351 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:32,367 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:32,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:32,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,379 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-18 18:44:32,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:32,407 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:32,407 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:32,407 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:32,408 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:32,408 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:32,409 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:32,409 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:32,427 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:32,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,438 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-18 18:44:32,443 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:32,459 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:32,459 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:32,459 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:32,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:32,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:32,461 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:32,461 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:32,483 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:32,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:32,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,495 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,509 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:32,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-18 18:44:32,524 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:32,525 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:32,525 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:32,525 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:32,525 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:32,526 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:32,526 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:32,536 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:32,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:32,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,552 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,565 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:32,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-18 18:44:32,581 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:32,581 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:32,581 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:32,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:32,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:32,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:32,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:32,599 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:32,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:32,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,610 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,616 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:32,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-18 18:44:32,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:32,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:32,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:32,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:32,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:32,634 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:32,634 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:32,645 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:44:32,652 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 18:44:32,652 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 18:44:32,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:32,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:32,659 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:32,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-18 18:44:32,663 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:44:32,663 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:44:32,664 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:44:32,664 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2022-11-18 18:44:32,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:32,679 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:44:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:32,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:32,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:44:32,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:32,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:44:32,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:32,951 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2022-11-18 18:44:32,954 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:33,208 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2022-11-18 18:44:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-18 18:44:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:44:33,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2022-11-18 18:44:33,220 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-18 18:44:33,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:33,222 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-18 18:44:33,222 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:33,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2022-11-18 18:44:33,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:33,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2022-11-18 18:44:33,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-18 18:44:33,241 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2022-11-18 18:44:33,242 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-11-18 18:44:33,243 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2022-11-18 18:44:33,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2022-11-18 18:44:33,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:33,245 INFO L218 hiAutomatonCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-18 18:44:33,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2022-11-18 18:44:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2022-11-18 18:44:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2022-11-18 18:44:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2022-11-18 18:44:33,286 INFO L240 hiAutomatonCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-18 18:44:33,287 INFO L428 stractBuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2022-11-18 18:44:33,287 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-18 18:44:33,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2022-11-18 18:44:33,289 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-18 18:44:33,289 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:33,289 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:33,291 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:33,291 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:33,291 INFO L748 eck$LassoCheckResult]: Stem: 195#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); 196#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 := 5; 213#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 212#fibo1ENTRY ~n := #in~n; 214#L10 assume !(~n < 1); 225#L12 assume !(1 == ~n); 207#L15 call #t~ret4 := fibo2(~n - 1);< 229#fibo2ENTRY ~n := #in~n; 235#L20 assume !(~n < 1); 248#L22 assume !(1 == ~n); 203#L25 call #t~ret6 := fibo1(~n - 1);< 215#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 204#fibo1FINAL assume true; 205#fibo1EXIT >#46#return; 206#L25-1 [2022-11-18 18:44:33,292 INFO L750 eck$LassoCheckResult]: Loop: 206#L25-1 call #t~ret7 := fibo1(~n - 2);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume !(~n < 1); 240#L12 assume !(1 == ~n); 210#L15 call #t~ret4 := fibo2(~n - 1);< 219#fibo2ENTRY ~n := #in~n; 242#L20 assume !(~n < 1); 241#L22 assume !(1 == ~n); 218#L25 call #t~ret6 := fibo1(~n - 1);< 211#fibo1ENTRY ~n := #in~n; 239#L10 assume ~n < 1;#res := 0; 237#fibo1FINAL assume true; 238#fibo1EXIT >#46#return; 206#L25-1 [2022-11-18 18:44:33,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:33,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2022-11-18 18:44:33,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:33,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843629678] [2022-11-18 18:44:33,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:33,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 18:44:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:33,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:44:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:33,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843629678] [2022-11-18 18:44:33,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843629678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:33,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:33,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:44:33,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352250724] [2022-11-18 18:44:33,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:33,603 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 18:44:33,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:33,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2022-11-18 18:44:33,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:33,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072124788] [2022-11-18 18:44:33,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:33,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:33,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:33,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:44:33,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:33,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072124788] [2022-11-18 18:44:33,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072124788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:33,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:33,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:44:33,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347893461] [2022-11-18 18:44:33,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:33,771 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 18:44:33,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:33,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:44:33,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:44:33,776 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 18:44:33,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:33,892 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2022-11-18 18:44:33,892 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2022-11-18 18:44:33,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-18 18:44:33,912 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2022-11-18 18:44:33,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2022-11-18 18:44:33,914 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2022-11-18 18:44:33,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2022-11-18 18:44:33,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:33,915 INFO L218 hiAutomatonCegarLoop]: Abstraction has 66 states and 86 transitions. [2022-11-18 18:44:33,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2022-11-18 18:44:33,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2022-11-18 18:44:33,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-18 18:44:33,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2022-11-18 18:44:33,926 INFO L240 hiAutomatonCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-18 18:44:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:44:33,927 INFO L428 stractBuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2022-11-18 18:44:33,927 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-18 18:44:33,928 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2022-11-18 18:44:33,931 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2022-11-18 18:44:33,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:33,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:33,933 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:33,933 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:33,933 INFO L748 eck$LassoCheckResult]: Stem: 340#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); 341#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 := 5; 359#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 358#fibo1ENTRY ~n := #in~n; 360#L10 assume !(~n < 1); 370#L12 assume !(1 == ~n); 354#L15 call #t~ret4 := fibo2(~n - 1);< 377#fibo2ENTRY ~n := #in~n; 381#L20 assume !(~n < 1); 397#L22 assume !(1 == ~n); 348#L25 call #t~ret6 := fibo1(~n - 1);< 361#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 386#L12 assume 1 == ~n;#res := 1; 385#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 350#L25-1 [2022-11-18 18:44:33,933 INFO L750 eck$LassoCheckResult]: Loop: 350#L25-1 call #t~ret7 := fibo1(~n - 2);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume !(1 == ~n); 356#L15 call #t~ret4 := fibo2(~n - 1);< 390#fibo2ENTRY ~n := #in~n; 389#L20 assume !(~n < 1); 387#L22 assume !(1 == ~n); 351#L25 call #t~ret6 := fibo1(~n - 1);< 357#fibo1ENTRY ~n := #in~n; 374#L10 assume !(~n < 1); 368#L12 assume 1 == ~n;#res := 1; 369#fibo1FINAL assume true; 383#fibo1EXIT >#46#return; 350#L25-1 [2022-11-18 18:44:33,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:33,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2022-11-18 18:44:33,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:33,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407219970] [2022-11-18 18:44:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:33,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 18:44:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:34,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:34,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407219970] [2022-11-18 18:44:34,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407219970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:34,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331999809] [2022-11-18 18:44:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:34,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:34,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:34,183 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:34,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 18:44:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:34,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:44:34,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:34,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:34,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331999809] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:34,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:34,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-18 18:44:34,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479943137] [2022-11-18 18:44:34,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:34,532 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 18:44:34,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2022-11-18 18:44:34,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:34,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437736576] [2022-11-18 18:44:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:34,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:34,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:34,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:34,809 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:44:34,809 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:44:34,809 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:44:34,809 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:44:34,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:44:34,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:34,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:44:34,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:44:34,810 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2022-11-18 18:44:34,810 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:44:34,810 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:44:34,811 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:34,815 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:34,818 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:34,821 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:34,824 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:34,833 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:34,837 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:34,840 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:34,927 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:44:34,927 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:44:34,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:34,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:34,929 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:34,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:34,956 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:34,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-18 18:44:34,981 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:34,981 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret4=0} Honda state: {fibo1_#t~ret4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:34,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:34,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:34,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:34,993 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:34,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-18 18:44:35,001 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:35,001 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:35,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:35,027 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:35,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:35,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:35,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:35,032 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:35,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-18 18:44:35,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:35,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:35,083 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:35,083 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:35,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:35,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:35,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:35,097 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:35,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-18 18:44:35,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:35,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:35,117 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:35,118 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:35,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:35,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:35,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:35,123 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:35,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-18 18:44:35,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:35,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:35,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-11-18 18:44:35,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:35,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:35,151 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:35,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-18 18:44:35,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:44:35,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:36,769 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:44:36,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-18 18:44:36,774 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:44:36,774 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:44:36,774 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:44:36,774 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:44:36,774 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:44:36,775 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:36,775 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:44:36,775 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:44:36,775 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration3_Loop [2022-11-18 18:44:36,775 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:44:36,775 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:44:36,776 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:36,785 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:36,789 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:36,792 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:36,820 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:36,823 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:36,826 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:36,828 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:36,894 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:44:36,894 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:44:36,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:36,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:36,895 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:36,904 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:36,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-18 18:44:36,921 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:36,921 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:36,921 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:36,921 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:36,921 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:36,923 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:36,923 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:36,932 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:36,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:36,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:36,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:36,944 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:36,949 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:36,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-18 18:44:36,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:36,965 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:36,965 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:36,965 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:36,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:36,967 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:36,967 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:36,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:36,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:36,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:36,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:36,998 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:37,004 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:37,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-18 18:44:37,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:37,020 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:37,020 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:37,020 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:37,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:37,021 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:37,021 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:37,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:37,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:37,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:37,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:37,028 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:37,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-18 18:44:37,033 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:37,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:37,045 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:37,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:37,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:37,046 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:37,048 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:37,048 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:37,079 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:44:37,087 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 18:44:37,087 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 18:44:37,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:37,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:37,095 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:37,099 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:44:37,100 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:44:37,100 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:44:37,100 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2022-11-18 18:44:37,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-18 18:44:37,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-11-18 18:44:37,107 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:44:37,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-11-18 18:44:37,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:37,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:44:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:37,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:44:37,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:37,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:37,581 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2022-11-18 18:44:37,581 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:44:38,230 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2022-11-18 18:44:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2022-11-18 18:44:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 18:44:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2022-11-18 18:44:38,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2022-11-18 18:44:38,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:38,238 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2022-11-18 18:44:38,238 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:38,239 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2022-11-18 18:44:38,239 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:38,240 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2022-11-18 18:44:38,245 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-18 18:44:38,249 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2022-11-18 18:44:38,249 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2022-11-18 18:44:38,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2022-11-18 18:44:38,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2022-11-18 18:44:38,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:38,261 INFO L218 hiAutomatonCegarLoop]: Abstraction has 169 states and 237 transitions. [2022-11-18 18:44:38,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2022-11-18 18:44:38,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2022-11-18 18:44:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2022-11-18 18:44:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2022-11-18 18:44:38,303 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 206 transitions. [2022-11-18 18:44:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:44:38,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:44:38,306 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) [2022-11-18 18:44:38,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:38,621 INFO L93 Difference]: Finished difference Result 191 states and 254 transitions. [2022-11-18 18:44:38,621 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 254 transitions. [2022-11-18 18:44:38,636 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-18 18:44:38,645 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 185 states and 246 transitions. [2022-11-18 18:44:38,649 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 122 [2022-11-18 18:44:38,650 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 122 [2022-11-18 18:44:38,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 185 states and 246 transitions. [2022-11-18 18:44:38,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:38,652 INFO L218 hiAutomatonCegarLoop]: Abstraction has 185 states and 246 transitions. [2022-11-18 18:44:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states and 246 transitions. [2022-11-18 18:44:38,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 172. [2022-11-18 18:44:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 116 states have internal predecessors, (133), 40 states have call successors, (42), 21 states have call predecessors, (42), 26 states have return successors, (56), 34 states have call predecessors, (56), 37 states have call successors, (56) [2022-11-18 18:44:38,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 231 transitions. [2022-11-18 18:44:38,684 INFO L240 hiAutomatonCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-11-18 18:44:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:38,685 INFO L428 stractBuchiCegarLoop]: Abstraction has 172 states and 231 transitions. [2022-11-18 18:44:38,686 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-18 18:44:38,686 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 172 states and 231 transitions. [2022-11-18 18:44:38,689 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-18 18:44:38,693 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:38,693 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:38,697 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 18:44:38,699 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-18 18:44:38,700 INFO L748 eck$LassoCheckResult]: Stem: 1215#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); 1216#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 := 5; 1243#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 1289#fibo1ENTRY ~n := #in~n; 1323#L10 assume !(~n < 1); 1322#L12 assume !(1 == ~n); 1221#L15 call #t~ret4 := fibo2(~n - 1);< 1275#fibo2ENTRY ~n := #in~n; 1282#L20 assume !(~n < 1); 1220#L22 assume !(1 == ~n); 1222#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1314#L10 assume !(~n < 1); 1313#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1312#fibo2ENTRY ~n := #in~n; 1309#L20 assume !(~n < 1); 1310#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1314#L10 assume !(~n < 1); 1313#L12 assume !(1 == ~n); 1245#L15 call #t~ret4 := fibo2(~n - 1);< 1312#fibo2ENTRY ~n := #in~n; 1309#L20 assume ~n < 1;#res := 0; 1269#fibo2FINAL assume true; 1270#fibo2EXIT >#50#return; 1246#L15-1 call #t~ret5 := fibo2(~n - 2);< 1249#fibo2ENTRY ~n := #in~n; 1379#L20 assume !(~n < 1); 1378#L22 assume !(1 == ~n); 1244#L25 call #t~ret6 := fibo1(~n - 1);< 1247#fibo1ENTRY ~n := #in~n; 1315#L10 assume !(~n < 1); 1318#L12 assume 1 == ~n;#res := 1; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1225#L25-1 call #t~ret7 := fibo1(~n - 2);< 1235#fibo1ENTRY ~n := #in~n; 1308#L10 assume !(~n < 1); 1306#L12 assume !(1 == ~n); 1233#L15 call #t~ret4 := fibo2(~n - 1);< 1305#fibo2ENTRY ~n := #in~n; 1303#L20 assume ~n < 1;#res := 0; 1304#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1234#L15-1 call #t~ret5 := fibo2(~n - 2);< 1305#fibo2ENTRY ~n := #in~n; 1303#L20 assume !(~n < 1); 1298#L22 assume 1 == ~n;#res := 1; 1299#fibo2FINAL assume true; 1366#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#46#return; 1260#L25-1 call #t~ret7 := fibo1(~n - 2);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1283#L15-1 [2022-11-18 18:44:38,701 INFO L750 eck$LassoCheckResult]: Loop: 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1373#L22 assume !(1 == ~n); 1259#L25 call #t~ret6 := fibo1(~n - 1);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume !(~n < 1); 1373#L22 assume !(1 == ~n); 1259#L25 call #t~ret6 := fibo1(~n - 1);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#46#return; 1260#L25-1 call #t~ret7 := fibo1(~n - 2);< 1231#fibo1ENTRY ~n := #in~n; 1271#L10 assume !(~n < 1); 1258#L12 assume !(1 == ~n); 1263#L15 call #t~ret4 := fibo2(~n - 1);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#50#return; 1283#L15-1 call #t~ret5 := fibo2(~n - 2);< 1274#fibo2ENTRY ~n := #in~n; 1284#L20 assume ~n < 1;#res := 0; 1370#fibo2FINAL assume true; 1368#fibo2EXIT >#52#return; 1365#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 1380#fibo1FINAL assume true; 1376#fibo1EXIT >#48#return; 1372#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 1369#fibo2FINAL assume true; 1367#fibo2EXIT >#50#return; 1283#L15-1 [2022-11-18 18:44:38,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:38,701 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2022-11-18 18:44:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:38,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151949334] [2022-11-18 18:44:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:38,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:44:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 18:44:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,317 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 23 proven. 71 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-18 18:44:39,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:39,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151949334] [2022-11-18 18:44:39,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151949334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:39,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958018634] [2022-11-18 18:44:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:39,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:39,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:39,320 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:39,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-18 18:44:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:39,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:44:39,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-11-18 18:44:39,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 80 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-18 18:44:40,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958018634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:40,367 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:40,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 30 [2022-11-18 18:44:40,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463055353] [2022-11-18 18:44:40,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:40,368 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 18:44:40,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:40,369 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2022-11-18 18:44:40,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:40,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806506164] [2022-11-18 18:44:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:40,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 18:44:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 18:44:40,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:40,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806506164] [2022-11-18 18:44:40,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806506164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:40,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279413528] [2022-11-18 18:44:40,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:40,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:40,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:40,543 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:40,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-18 18:44:40,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:40,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:44:40,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 18:44:40,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 18:44:41,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279413528] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:41,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:41,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 15 [2022-11-18 18:44:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004167340] [2022-11-18 18:44:41,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:41,158 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 18:44:41,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:41,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:44:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:44:41,159 INFO L87 Difference]: Start difference. First operand 172 states and 231 transitions. cyclomatic complexity: 64 Second operand has 15 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (12), 1 states have call predecessors, (12), 5 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2022-11-18 18:44:41,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:41,508 INFO L93 Difference]: Finished difference Result 228 states and 299 transitions. [2022-11-18 18:44:41,509 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 299 transitions. [2022-11-18 18:44:41,513 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-18 18:44:41,517 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 205 states and 268 transitions. [2022-11-18 18:44:41,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2022-11-18 18:44:41,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2022-11-18 18:44:41,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 268 transitions. [2022-11-18 18:44:41,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:41,519 INFO L218 hiAutomatonCegarLoop]: Abstraction has 205 states and 268 transitions. [2022-11-18 18:44:41,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 268 transitions. [2022-11-18 18:44:41,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 189. [2022-11-18 18:44:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 128 states have internal predecessors, (139), 40 states have call successors, (41), 25 states have call predecessors, (41), 31 states have return successors, (64), 35 states have call predecessors, (64), 37 states have call successors, (64) [2022-11-18 18:44:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 244 transitions. [2022-11-18 18:44:41,535 INFO L240 hiAutomatonCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-11-18 18:44:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 18:44:41,537 INFO L428 stractBuchiCegarLoop]: Abstraction has 189 states and 244 transitions. [2022-11-18 18:44:41,537 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-18 18:44:41,537 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 244 transitions. [2022-11-18 18:44:41,539 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2022-11-18 18:44:41,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:41,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:41,541 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:41,542 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-18 18:44:41,542 INFO L748 eck$LassoCheckResult]: Stem: 2732#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 2733#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~ret8#1, main_~x~0#1, main_~result~0#1;main_~x~0#1 := 5; 2762#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 2794#fibo1ENTRY ~n := #in~n; 2783#L10 assume !(~n < 1); 2778#L12 assume !(1 == ~n); 2738#L15 call #t~ret4 := fibo2(~n - 1);< 2786#fibo2ENTRY ~n := #in~n; 2788#L20 assume !(~n < 1); 2737#L22 assume !(1 == ~n); 2739#L25 call #t~ret6 := fibo1(~n - 1);< 2807#fibo1ENTRY ~n := #in~n; 2805#L10 assume !(~n < 1); 2804#L12 assume !(1 == ~n); 2750#L15 call #t~ret4 := fibo2(~n - 1);< 2799#fibo2ENTRY ~n := #in~n; 2825#L20 assume !(~n < 1); 2824#L22 assume !(1 == ~n); 2769#L25 call #t~ret6 := fibo1(~n - 1);< 2807#fibo1ENTRY ~n := #in~n; 2808#L10 assume !(~n < 1); 2835#L12 assume 1 == ~n;#res := 1; 2836#fibo1FINAL assume true; 2905#fibo1EXIT >#46#return; 2748#L25-1 call #t~ret7 := fibo1(~n - 2);< 2751#fibo1ENTRY ~n := #in~n; 2911#L10 assume ~n < 1;#res := 0; 2909#fibo1FINAL assume true; 2907#fibo1EXIT >#48#return; 2771#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2772#fibo2FINAL assume true; 2779#fibo2EXIT >#50#return; 2849#L15-1 [2022-11-18 18:44:41,542 INFO L750 eck$LassoCheckResult]: Loop: 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume !(1 == ~n); 2857#L25 call #t~ret6 := fibo1(~n - 1);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume !(1 == ~n); 2857#L25 call #t~ret6 := fibo1(~n - 1);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume 1 == ~n;#res := 1; 2885#fibo2FINAL assume true; 2860#fibo2EXIT >#50#return; 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume ~n < 1;#res := 0; 2887#fibo2FINAL assume true; 2883#fibo2EXIT >#52#return; 2848#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2882#fibo1FINAL assume true; 2879#fibo1EXIT >#46#return; 2854#L25-1 call #t~ret7 := fibo1(~n - 2);< 2867#fibo1ENTRY ~n := #in~n; 2864#L10 assume !(~n < 1); 2862#L12 assume !(1 == ~n); 2851#L15 call #t~ret4 := fibo2(~n - 1);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume !(~n < 1); 2884#L22 assume 1 == ~n;#res := 1; 2885#fibo2FINAL assume true; 2860#fibo2EXIT >#50#return; 2849#L15-1 call #t~ret5 := fibo2(~n - 2);< 2858#fibo2ENTRY ~n := #in~n; 2886#L20 assume ~n < 1;#res := 0; 2887#fibo2FINAL assume true; 2883#fibo2EXIT >#52#return; 2848#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 2882#fibo1FINAL assume true; 2879#fibo1EXIT >#48#return; 2876#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 2875#fibo2FINAL assume true; 2850#fibo2EXIT >#50#return; 2849#L15-1 [2022-11-18 18:44:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:41,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2022-11-18 18:44:41,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:41,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313415422] [2022-11-18 18:44:41,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:41,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:41,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:41,563 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:41,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2022-11-18 18:44:41,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:41,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950120549] [2022-11-18 18:44:41,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:41,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:44:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,847 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-18 18:44:41,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950120549] [2022-11-18 18:44:41,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950120549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:41,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403810423] [2022-11-18 18:44:41,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:41,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:41,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:41,855 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:41,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-18 18:44:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:41,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:44:41,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 18:44:42,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 18:44:42,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403810423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:42,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:42,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2022-11-18 18:44:42,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403822747] [2022-11-18 18:44:42,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:42,609 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 18:44:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:44:42,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:44:42,613 INFO L87 Difference]: Start difference. First operand 189 states and 244 transitions. cyclomatic complexity: 60 Second operand has 20 states, 17 states have (on average 2.823529411764706) internal successors, (48), 18 states have internal predecessors, (48), 11 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-18 18:44:43,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:43,039 INFO L93 Difference]: Finished difference Result 130 states and 162 transitions. [2022-11-18 18:44:43,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 130 states and 162 transitions. [2022-11-18 18:44:43,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-18 18:44:43,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 130 states to 106 states and 132 transitions. [2022-11-18 18:44:43,044 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 91 [2022-11-18 18:44:43,044 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 91 [2022-11-18 18:44:43,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2022-11-18 18:44:43,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:43,045 INFO L218 hiAutomatonCegarLoop]: Abstraction has 106 states and 132 transitions. [2022-11-18 18:44:43,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2022-11-18 18:44:43,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2022-11-18 18:44:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 69 states have internal predecessors, (75), 20 states have call successors, (20), 15 states have call predecessors, (20), 16 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2022-11-18 18:44:43,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2022-11-18 18:44:43,053 INFO L240 hiAutomatonCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-11-18 18:44:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:44:43,054 INFO L428 stractBuchiCegarLoop]: Abstraction has 103 states and 128 transitions. [2022-11-18 18:44:43,054 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-18 18:44:43,055 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 103 states and 128 transitions. [2022-11-18 18:44:43,056 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2022-11-18 18:44:43,056 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:43,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:43,058 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:43,058 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:43,058 INFO L748 eck$LassoCheckResult]: Stem: 3486#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); 3487#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 := 5; 3509#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 3536#fibo1ENTRY ~n := #in~n; 3524#L10 assume !(~n < 1); 3525#L12 assume !(1 == ~n); 3510#L15 call #t~ret4 := fibo2(~n - 1);< 3570#fibo2ENTRY ~n := #in~n; 3531#L20 assume !(~n < 1); 3532#L22 assume !(1 == ~n); 3495#L25 call #t~ret6 := fibo1(~n - 1);< 3505#fibo1ENTRY ~n := #in~n; 3506#L10 assume !(~n < 1); 3519#L12 assume !(1 == ~n); 3492#L15 call #t~ret4 := fibo2(~n - 1);< 3527#fibo2ENTRY ~n := #in~n; 3535#L20 assume !(~n < 1); 3491#L22 assume !(1 == ~n); 3493#L25 call #t~ret6 := fibo1(~n - 1);< 3505#fibo1ENTRY ~n := #in~n; 3507#L10 assume !(~n < 1); 3539#L12 assume 1 == ~n;#res := 1; 3494#fibo1FINAL assume true; 3496#fibo1EXIT >#46#return; 3508#L25-1 call #t~ret7 := fibo1(~n - 2);< 3579#fibo1ENTRY ~n := #in~n; 3584#L10 assume ~n < 1;#res := 0; 3581#fibo1FINAL assume true; 3577#fibo1EXIT >#48#return; 3574#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3573#fibo2FINAL assume true; 3571#fibo2EXIT >#50#return; 3514#L15-1 [2022-11-18 18:44:43,058 INFO L750 eck$LassoCheckResult]: Loop: 3514#L15-1 call #t~ret5 := fibo2(~n - 2);< 3545#fibo2ENTRY ~n := #in~n; 3568#L20 assume !(~n < 1); 3540#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3499#fibo1ENTRY ~n := #in~n; 3504#L10 assume !(~n < 1); 3542#L12 assume !(1 == ~n); 3513#L15 call #t~ret4 := fibo2(~n - 1);< 3526#fibo2ENTRY ~n := #in~n; 3534#L20 assume !(~n < 1); 3540#L22 assume !(1 == ~n); 3501#L25 call #t~ret6 := fibo1(~n - 1);< 3499#fibo1ENTRY ~n := #in~n; 3504#L10 assume !(~n < 1); 3542#L12 assume 1 == ~n;#res := 1; 3518#fibo1FINAL assume true; 3586#fibo1EXIT >#46#return; 3522#L25-1 call #t~ret7 := fibo1(~n - 2);< 3548#fibo1ENTRY ~n := #in~n; 3521#L10 assume ~n < 1;#res := 0; 3523#fibo1FINAL assume true; 3580#fibo1EXIT >#48#return; 3512#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 3515#fibo2FINAL assume true; 3520#fibo2EXIT >#50#return; 3514#L15-1 [2022-11-18 18:44:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:43,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2022-11-18 18:44:43,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:43,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197952654] [2022-11-18 18:44:43,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:43,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:43,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:43,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:43,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:43,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2022-11-18 18:44:43,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:43,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155839484] [2022-11-18 18:44:43,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:43,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:43,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:43,089 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:43,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2022-11-18 18:44:43,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:43,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034768581] [2022-11-18 18:44:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:43,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:44:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 18:44:43,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,270 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 18:44:43,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:43,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034768581] [2022-11-18 18:44:43,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034768581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:43,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746781448] [2022-11-18 18:44:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:43,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:43,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:43,279 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:43,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-11-18 18:44:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:43,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:44:43,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:44:43,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:43,596 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 18:44:43,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746781448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:43,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:43,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 14 [2022-11-18 18:44:43,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284319037] [2022-11-18 18:44:43,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:44,041 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:44:44,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:44:44,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:44:44,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:44:44,041 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:44:44,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:44,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:44:44,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:44:44,042 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2022-11-18 18:44:44,042 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:44:44,042 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:44:44,043 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,047 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,058 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,064 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,067 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,069 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,072 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,075 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,156 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:44:44,157 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:44:44,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:44,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:44,166 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:44,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-18 18:44:44,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:44,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:44,181 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:44,181 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:44,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-11-18 18:44:44,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:44,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:44,185 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:44,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-18 18:44:44,188 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:44,188 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:44,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:44,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:44,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:44,208 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:44,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-18 18:44:44,212 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:44:44,212 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:44,702 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:44:44,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:44,706 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:44:44,706 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:44:44,706 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:44:44,706 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:44:44,706 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:44:44,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:44,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:44:44,706 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:44:44,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration6_Loop [2022-11-18 18:44:44,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:44:44,707 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:44:44,708 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,719 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,732 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,735 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,739 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,741 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,744 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,747 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:44,842 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:44:44,842 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:44:44,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:44,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:44,845 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:44,851 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:44,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-18 18:44:44,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:44,868 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:44,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:44,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:44,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:44,869 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:44,869 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:44,878 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:44,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:44,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:44,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:44,884 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:44,891 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:44,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-18 18:44:44,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:44,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:44,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:44,907 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:44,907 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:44,920 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:44,920 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:44,943 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:44:44,947 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-18 18:44:44,947 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-18 18:44:44,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:44,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:44,955 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:44,956 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:44:44,957 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:44:44,957 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:44:44,957 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-11-18 18:44:44,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-18 18:44:44,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:44,962 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:44:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:45,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:44:45,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:45,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 18:44:45,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:44:45,609 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2022-11-18 18:44:45,610 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27 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) [2022-11-18 18:44:46,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:46,203 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 103 states and 128 transitions. cyclomatic complexity: 27. 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 335 states and 442 transitions. Complement of second has 46 states. [2022-11-18 18:44:46,205 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 [2022-11-18 18:44:46,206 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) [2022-11-18 18:44:46,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2022-11-18 18:44:46,207 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2022-11-18 18:44:46,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:46,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2022-11-18 18:44:46,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:46,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2022-11-18 18:44:46,211 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:46,212 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 335 states and 442 transitions. [2022-11-18 18:44:46,217 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2022-11-18 18:44:46,222 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 335 states to 292 states and 395 transitions. [2022-11-18 18:44:46,223 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 191 [2022-11-18 18:44:46,223 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 195 [2022-11-18 18:44:46,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 395 transitions. [2022-11-18 18:44:46,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:46,224 INFO L218 hiAutomatonCegarLoop]: Abstraction has 292 states and 395 transitions. [2022-11-18 18:44:46,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 395 transitions. [2022-11-18 18:44:46,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2022-11-18 18:44:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 166 states have (on average 1.1506024096385543) internal successors, (191), 173 states have internal predecessors, (191), 55 states have call successors, (56), 36 states have call predecessors, (56), 45 states have return successors, (110), 56 states have call predecessors, (110), 52 states have call successors, (110) [2022-11-18 18:44:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2022-11-18 18:44:46,241 INFO L240 hiAutomatonCegarLoop]: Abstraction has 266 states and 357 transitions. [2022-11-18 18:44:46,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:46,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:44:46,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:44:46,243 INFO L87 Difference]: Start difference. First operand 266 states and 357 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 18:44:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:46,484 INFO L93 Difference]: Finished difference Result 125 states and 148 transitions. [2022-11-18 18:44:46,484 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 148 transitions. [2022-11-18 18:44:46,486 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-18 18:44:46,488 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 122 states and 145 transitions. [2022-11-18 18:44:46,488 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-11-18 18:44:46,488 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-11-18 18:44:46,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 145 transitions. [2022-11-18 18:44:46,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:46,488 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 145 transitions. [2022-11-18 18:44:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 145 transitions. [2022-11-18 18:44:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2022-11-18 18:44:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 80 states have internal predecessors, (86), 21 states have call successors, (21), 16 states have call predecessors, (21), 20 states have return successors, (34), 21 states have call predecessors, (34), 18 states have call successors, (34) [2022-11-18 18:44:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2022-11-18 18:44:46,493 INFO L240 hiAutomatonCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-11-18 18:44:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:44:46,495 INFO L428 stractBuchiCegarLoop]: Abstraction has 118 states and 141 transitions. [2022-11-18 18:44:46,495 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-18 18:44:46,495 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 118 states and 141 transitions. [2022-11-18 18:44:46,496 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2022-11-18 18:44:46,497 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:46,497 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:46,499 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:46,499 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:46,500 INFO L748 eck$LassoCheckResult]: Stem: 5001#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); 5002#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 := 5; 5029#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5053#fibo1ENTRY ~n := #in~n; 5054#L10 assume !(~n < 1); 5066#L12 assume !(1 == ~n); 5007#L15 call #t~ret4 := fibo2(~n - 1);< 5050#fibo2ENTRY ~n := #in~n; 5045#L20 assume !(~n < 1); 5006#L22 assume !(1 == ~n); 5008#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5025#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5018#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5099#L20 assume !(~n < 1); 5097#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5025#L10 assume !(~n < 1); 5036#L12 assume !(1 == ~n); 5018#L15 call #t~ret4 := fibo2(~n - 1);< 5043#fibo2ENTRY ~n := #in~n; 5099#L20 assume !(~n < 1); 5097#L22 assume !(1 == ~n); 5024#L25 call #t~ret6 := fibo1(~n - 1);< 5023#fibo1ENTRY ~n := #in~n; 5026#L10 assume !(~n < 1); 5058#L12 assume 1 == ~n;#res := 1; 5064#fibo1FINAL assume true; 5113#fibo1EXIT >#46#return; 5017#L25-1 call #t~ret7 := fibo1(~n - 2);< 5019#fibo1ENTRY ~n := #in~n; 5115#L10 assume ~n < 1;#res := 0; 5114#fibo1FINAL assume true; 5027#fibo1EXIT >#48#return; 5028#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5033#fibo2FINAL assume true; 5046#fibo2EXIT >#50#return; 5004#L15-1 call #t~ret5 := fibo2(~n - 2);< 5032#fibo2ENTRY ~n := #in~n; 5044#L20 assume ~n < 1;#res := 0; 5005#fibo2FINAL assume true; 5037#fibo2EXIT >#52#return; 5076#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5074#fibo1FINAL assume true; 5071#fibo1EXIT >#46#return; 5010#L25-1 [2022-11-18 18:44:46,500 INFO L750 eck$LassoCheckResult]: Loop: 5010#L25-1 call #t~ret7 := fibo1(~n - 2);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5056#L15 call #t~ret4 := fibo2(~n - 1);< 5062#fibo2ENTRY ~n := #in~n; 5059#L20 assume !(~n < 1); 5060#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume !(1 == ~n); 5056#L15 call #t~ret4 := fibo2(~n - 1);< 5062#fibo2ENTRY ~n := #in~n; 5059#L20 assume !(~n < 1); 5060#L22 assume !(1 == ~n); 5012#L25 call #t~ret6 := fibo1(~n - 1);< 5031#fibo1ENTRY ~n := #in~n; 5061#L10 assume !(~n < 1); 5055#L12 assume 1 == ~n;#res := 1; 5009#fibo1FINAL assume true; 5016#fibo1EXIT >#46#return; 5039#L25-1 call #t~ret7 := fibo1(~n - 2);< 5116#fibo1ENTRY ~n := #in~n; 5038#L10 assume ~n < 1;#res := 0; 5040#fibo1FINAL assume true; 5095#fibo1EXIT >#48#return; 5094#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 5092#fibo2FINAL assume true; 5089#fibo2EXIT >#50#return; 5082#L15-1 call #t~ret5 := fibo2(~n - 2);< 5087#fibo2ENTRY ~n := #in~n; 5107#L20 assume ~n < 1;#res := 0; 5091#fibo2FINAL assume true; 5080#fibo2EXIT >#52#return; 5083#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5079#fibo1FINAL assume true; 5072#fibo1EXIT >#46#return; 5010#L25-1 [2022-11-18 18:44:46,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:46,500 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2022-11-18 18:44:46,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:46,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952805901] [2022-11-18 18:44:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:46,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:44:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:46,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:44:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 18:44:46,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:46,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952805901] [2022-11-18 18:44:46,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952805901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:46,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558117051] [2022-11-18 18:44:46,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:46,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:46,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:46,732 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:46,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-18 18:44:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:44:46,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:46,937 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:44:46,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:44:47,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558117051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:47,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:47,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-11-18 18:44:47,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114991905] [2022-11-18 18:44:47,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:47,304 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 18:44:47,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2022-11-18 18:44:47,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:47,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924629683] [2022-11-18 18:44:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:47,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:44:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:47,482 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 18:44:47,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:47,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924629683] [2022-11-18 18:44:47,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924629683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:47,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134242301] [2022-11-18 18:44:47,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:47,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:47,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:47,486 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:47,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-11-18 18:44:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:47,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:44:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:47,650 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 18:44:47,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 18:44:48,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134242301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:48,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:48,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-11-18 18:44:48,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848890175] [2022-11-18 18:44:48,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:48,005 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 18:44:48,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:48,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 18:44:48,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 18:44:48,007 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. cyclomatic complexity: 25 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) [2022-11-18 18:44:48,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:48,246 INFO L93 Difference]: Finished difference Result 126 states and 147 transitions. [2022-11-18 18:44:48,246 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 126 states and 147 transitions. [2022-11-18 18:44:48,248 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-18 18:44:48,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 126 states to 122 states and 143 transitions. [2022-11-18 18:44:48,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 107 [2022-11-18 18:44:48,251 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 107 [2022-11-18 18:44:48,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 143 transitions. [2022-11-18 18:44:48,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:48,251 INFO L218 hiAutomatonCegarLoop]: Abstraction has 122 states and 143 transitions. [2022-11-18 18:44:48,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states and 143 transitions. [2022-11-18 18:44:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2022-11-18 18:44:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 81 states have internal predecessors, (87), 21 states have call successors, (21), 17 states have call predecessors, (21), 20 states have return successors, (33), 21 states have call predecessors, (33), 18 states have call successors, (33) [2022-11-18 18:44:48,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2022-11-18 18:44:48,265 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-11-18 18:44:48,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 18:44:48,267 INFO L428 stractBuchiCegarLoop]: Abstraction has 120 states and 141 transitions. [2022-11-18 18:44:48,267 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-18 18:44:48,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 141 transitions. [2022-11-18 18:44:48,271 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2022-11-18 18:44:48,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:48,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:48,281 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:48,281 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-18 18:44:48,282 INFO L748 eck$LassoCheckResult]: Stem: 5911#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); 5912#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 := 5; 5933#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 5956#fibo1ENTRY ~n := #in~n; 5948#L10 assume !(~n < 1); 5942#L12 assume !(1 == ~n); 5917#L15 call #t~ret4 := fibo2(~n - 1);< 5955#fibo2ENTRY ~n := #in~n; 5953#L20 assume !(~n < 1); 5916#L22 assume !(1 == ~n); 5918#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5929#L10 assume !(~n < 1); 5973#L12 assume !(1 == ~n); 5936#L15 call #t~ret4 := fibo2(~n - 1);< 5951#fibo2ENTRY ~n := #in~n; 5989#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5929#L10 assume !(~n < 1); 5973#L12 assume !(1 == ~n); 5936#L15 call #t~ret4 := fibo2(~n - 1);< 5951#fibo2ENTRY ~n := #in~n; 5989#L20 assume !(~n < 1); 5985#L22 assume !(1 == ~n); 5928#L25 call #t~ret6 := fibo1(~n - 1);< 5927#fibo1ENTRY ~n := #in~n; 5930#L10 assume !(~n < 1); 5965#L12 assume 1 == ~n;#res := 1; 5969#fibo1FINAL assume true; 5931#fibo1EXIT >#46#return; 5932#L25-1 call #t~ret7 := fibo1(~n - 2);< 6019#fibo1ENTRY ~n := #in~n; 6024#L10 assume ~n < 1;#res := 0; 6022#fibo1FINAL assume true; 6018#fibo1EXIT >#48#return; 6016#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6015#fibo2FINAL assume true; 6014#fibo2EXIT >#50#return; 5914#L15-1 call #t~ret5 := fibo2(~n - 2);< 5940#fibo2ENTRY ~n := #in~n; 5952#L20 assume !(~n < 1); 5913#L22 assume 1 == ~n;#res := 1; 5915#fibo2FINAL assume true; 6025#fibo2EXIT >#52#return; 5957#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5958#fibo1FINAL assume true; 5977#fibo1EXIT >#46#return; 5961#L25-1 [2022-11-18 18:44:48,285 INFO L750 eck$LassoCheckResult]: Loop: 5961#L25-1 call #t~ret7 := fibo1(~n - 2);< 5921#fibo1ENTRY ~n := #in~n; 6028#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5935#fibo1ENTRY ~n := #in~n; 5971#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume !(1 == ~n); 5962#L25 call #t~ret6 := fibo1(~n - 1);< 5935#fibo1ENTRY ~n := #in~n; 5971#L10 assume !(~n < 1); 5959#L12 assume !(1 == ~n); 5938#L15 call #t~ret4 := fibo2(~n - 1);< 5967#fibo2ENTRY ~n := #in~n; 5966#L20 assume !(~n < 1); 5964#L22 assume 1 == ~n;#res := 1; 5943#fibo2FINAL assume true; 5944#fibo2EXIT >#50#return; 5954#L15-1 call #t~ret5 := fibo2(~n - 2);< 5992#fibo2ENTRY ~n := #in~n; 5997#L20 assume ~n < 1;#res := 0; 5995#fibo2FINAL assume true; 5991#fibo2EXIT >#52#return; 5990#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5979#fibo1FINAL assume true; 5975#fibo1EXIT >#46#return; 5976#L25-1 call #t~ret7 := fibo1(~n - 2);< 6027#fibo1ENTRY ~n := #in~n; 6029#L10 assume ~n < 1;#res := 0; 5947#fibo1FINAL assume true; 6003#fibo1EXIT >#48#return; 6001#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 6000#fibo2FINAL assume true; 5986#fibo2EXIT >#50#return; 5983#L15-1 call #t~ret5 := fibo2(~n - 2);< 5984#fibo2ENTRY ~n := #in~n; 5996#L20 assume !(~n < 1); 5994#L22 assume 1 == ~n;#res := 1; 5993#fibo2FINAL assume true; 5982#fibo2EXIT >#52#return; 5981#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 5980#fibo1FINAL assume true; 5978#fibo1EXIT >#46#return; 5961#L25-1 [2022-11-18 18:44:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2022-11-18 18:44:48,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:48,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613168977] [2022-11-18 18:44:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:48,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 18:44:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:44:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 18:44:48,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:48,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613168977] [2022-11-18 18:44:48,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613168977] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:48,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86213409] [2022-11-18 18:44:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:48,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:48,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:48,575 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:48,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-18 18:44:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:48,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 18:44:48,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:44:48,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 18:44:49,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86213409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:49,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:49,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 19 [2022-11-18 18:44:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840048861] [2022-11-18 18:44:49,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:49,063 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-18 18:44:49,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:49,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2022-11-18 18:44:49,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:49,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336217027] [2022-11-18 18:44:49,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:49,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:49,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:44:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:44:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:44:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,246 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-18 18:44:49,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:49,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336217027] [2022-11-18 18:44:49,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336217027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:49,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276410101] [2022-11-18 18:44:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:49,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:49,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:49,255 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:49,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-11-18 18:44:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:49,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:44:49,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-18 18:44:49,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 18:44:49,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276410101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:49,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:49,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 15 [2022-11-18 18:44:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276022676] [2022-11-18 18:44:49,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:49,873 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-18 18:44:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 18:44:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:44:49,874 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. cyclomatic complexity: 23 Second operand has 20 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 15 states have internal predecessors, (43), 11 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-18 18:44:50,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:50,370 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-11-18 18:44:50,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 103 states and 109 transitions. [2022-11-18 18:44:50,372 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 18:44:50,373 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 103 states to 89 states and 95 transitions. [2022-11-18 18:44:50,373 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2022-11-18 18:44:50,373 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2022-11-18 18:44:50,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2022-11-18 18:44:50,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-18 18:44:50,376 INFO L218 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-18 18:44:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2022-11-18 18:44:50,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-18 18:44:50,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 16 states have call successors, (16), 13 states have call predecessors, (16), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-18 18:44:50,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-11-18 18:44:50,380 INFO L240 hiAutomatonCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-18 18:44:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 18:44:50,382 INFO L428 stractBuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-18 18:44:50,382 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-18 18:44:50,382 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2022-11-18 18:44:50,383 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-18 18:44:50,383 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-18 18:44:50,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-18 18:44:50,385 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:50,385 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:44:50,387 INFO L748 eck$LassoCheckResult]: Stem: 6951#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); 6952#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 := 5; 6972#L39 call main_#t~ret8#1 := fibo1(main_~x~0#1);< 6996#fibo1ENTRY ~n := #in~n; 6985#L10 assume !(~n < 1); 6982#L12 assume !(1 == ~n); 6957#L15 call #t~ret4 := fibo2(~n - 1);< 6988#fibo2ENTRY ~n := #in~n; 6992#L20 assume !(~n < 1); 6956#L22 assume !(1 == ~n); 6958#L25 call #t~ret6 := fibo1(~n - 1);< 6967#fibo1ENTRY ~n := #in~n; 6969#L10 assume !(~n < 1); 7017#L12 assume !(1 == ~n); 6975#L15 call #t~ret4 := fibo2(~n - 1);< 7015#fibo2ENTRY ~n := #in~n; 7011#L20 assume !(~n < 1); 7009#L22 assume !(1 == ~n); 6968#L25 call #t~ret6 := fibo1(~n - 1);< 6967#fibo1ENTRY ~n := #in~n; 6970#L10 assume !(~n < 1); 6980#L12 assume 1 == ~n;#res := 1; 6981#fibo1FINAL assume true; 7025#fibo1EXIT >#46#return; 7022#L25-1 call #t~ret7 := fibo1(~n - 2);< 7023#fibo1ENTRY ~n := #in~n; 7028#L10 assume ~n < 1;#res := 0; 7027#fibo1FINAL assume true; 7021#fibo1EXIT >#48#return; 7019#L25-2 #res := #t~ret6 + #t~ret7;havoc #t~ret6;havoc #t~ret7; 7018#fibo2FINAL assume true; 7016#fibo2EXIT >#50#return; 7013#L15-1 call #t~ret5 := fibo2(~n - 2);< 7014#fibo2ENTRY ~n := #in~n; 7026#L20 assume !(~n < 1); 7024#L22 assume 1 == ~n;#res := 1; 7020#fibo2FINAL assume true; 7012#fibo2EXIT >#52#return; 7010#L15-2 #res := #t~ret4 + #t~ret5;havoc #t~ret4;havoc #t~ret5; 7008#fibo1FINAL assume true; 7006#fibo1EXIT >#46#return; 6960#L25-1 call #t~ret7 := fibo1(~n - 2);< 7002#fibo1ENTRY ~n := #in~n; 7039#L10 assume !(~n < 1); 6997#L12 [2022-11-18 18:44:50,388 INFO L750 eck$LassoCheckResult]: Loop: 6997#L12 assume !(1 == ~n); 6964#L15 call #t~ret4 := fibo2(~n - 1);< 6987#fibo2ENTRY ~n := #in~n; 7004#L20 assume !(~n < 1); 7000#L22 assume !(1 == ~n); 6973#L25 call #t~ret6 := fibo1(~n - 1);< 6974#fibo1ENTRY ~n := #in~n; 6999#L10 assume !(~n < 1); 6997#L12 [2022-11-18 18:44:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2022-11-18 18:44:50,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:50,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366773713] [2022-11-18 18:44:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:50,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:50,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:50,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2022-11-18 18:44:50,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:50,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136897532] [2022-11-18 18:44:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:50,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:50,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 18:44:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 18:44:50,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 18:44:50,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:50,417 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2022-11-18 18:44:50,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:50,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024399507] [2022-11-18 18:44:50,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:50,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 18:44:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:50,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:50,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 18:44:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:50,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:44:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 18:44:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:50,591 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:44:50,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:50,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024399507] [2022-11-18 18:44:50,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024399507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:44:50,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7899466] [2022-11-18 18:44:50,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:44:50,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:44:50,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:50,615 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:44:50,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-11-18 18:44:50,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-18 18:44:50,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:44:50,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:44:50,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:44:50,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:44:50,901 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-18 18:44:50,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7899466] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:44:50,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:44:50,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2022-11-18 18:44:50,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225677669] [2022-11-18 18:44:50,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:44:51,030 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:44:51,030 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:44:51,030 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:44:51,030 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:44:51,030 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-18 18:44:51,030 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:51,030 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:44:51,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:44:51,031 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2022-11-18 18:44:51,031 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:44:51,031 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:44:51,031 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:51,034 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:51,036 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:51,039 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:51,042 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:51,051 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:51,053 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:51,056 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:51,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:44:51,106 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-18 18:44:51,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:51,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:51,115 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:51,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:51,117 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:51,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-18 18:44:51,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:51,139 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:51,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:51,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:51,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:51,147 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:51,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:51,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:51,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-18 18:44:51,180 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:51,180 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:51,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:51,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:51,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:51,190 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:51,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:51,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:51,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-18 18:44:51,222 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:51,222 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret7=0} Honda state: {fibo2_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:51,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:51,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:51,233 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:51,238 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:51,238 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:51,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-18 18:44:51,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-18 18:44:51,263 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret5=0} Honda state: {fibo1_#t~ret5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-18 18:44:51,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:51,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:51,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:51,273 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:51,277 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-18 18:44:51,277 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:51,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-18 18:44:51,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:51,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:51,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:51,321 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:51,326 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-18 18:44:51,326 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-18 18:44:51,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-18 18:44:52,383 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-18 18:44:52,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:52,387 INFO L210 LassoAnalysis]: Preferences: [2022-11-18 18:44:52,387 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-18 18:44:52,387 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-18 18:44:52,387 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-18 18:44:52,387 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-18 18:44:52,387 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:52,387 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-18 18:44:52,387 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-18 18:44:52,387 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-2.c_Iteration9_Loop [2022-11-18 18:44:52,387 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-18 18:44:52,387 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-18 18:44:52,388 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:52,393 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:52,395 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:52,397 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:52,400 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:52,409 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:52,412 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:52,414 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-18 18:44:52,475 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-18 18:44:52,476 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-18 18:44:52,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:52,477 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:52,484 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:52,496 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:52,496 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:52,496 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:52,496 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:52,497 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:52,497 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:52,497 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:52,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-18 18:44:52,507 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:52,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:52,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:52,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:52,517 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:52,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:52,533 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:52,533 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:52,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:52,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:52,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:52,534 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:52,534 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:52,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-18 18:44:52,539 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:52,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:52,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:52,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:52,545 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:52,548 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:52,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:52,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:52,561 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:52,561 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:52,561 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:52,562 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:52,562 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:52,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-18 18:44:52,563 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:52,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:52,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:52,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:52,567 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:52,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-18 18:44:52,570 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:52,579 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:52,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:52,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:52,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:52,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:52,580 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:52,580 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:52,582 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-18 18:44:52,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2022-11-18 18:44:52,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:52,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:52,586 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:52,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-18 18:44:52,609 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-18 18:44:52,619 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-18 18:44:52,619 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-18 18:44:52,619 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-18 18:44:52,619 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-18 18:44:52,619 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-18 18:44:52,620 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-18 18:44:52,620 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-18 18:44:52,630 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-18 18:44:52,632 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-18 18:44:52,632 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-18 18:44:52,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-18 18:44:52,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:52,639 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:52,643 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-18 18:44:52,644 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-18 18:44:52,644 INFO L513 LassoAnalysis]: Proved termination. [2022-11-18 18:44:52,644 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2022-11-18 18:44:52,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-18 18:44:52,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:52,648 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-18 18:44:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:52,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:44:52,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:53,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:44:53,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:53,153 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-18 18:44:53,154 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:53,273 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2022-11-18 18:44:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-18 18:44:53,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:53,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-11-18 18:44:53,275 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-18 18:44:53,275 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:53,275 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 18:44:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:53,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:44:53,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:53,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:44:53,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:53,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:53,824 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-18 18:44:53,824 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:53,935 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2022-11-18 18:44:53,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-18 18:44:53,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2022-11-18 18:44:53,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-18 18:44:53,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:53,937 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-18 18:44:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:54,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 18:44:54,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:54,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:54,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 18:44:54,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:44:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:44:54,474 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2022-11-18 18:44:54,475 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:54,662 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 135 states and 146 transitions. Complement of second has 23 states. [2022-11-18 18:44:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2022-11-18 18:44:54,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:54,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2022-11-18 18:44:54,664 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2022-11-18 18:44:54,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:54,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2022-11-18 18:44:54,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:54,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2022-11-18 18:44:54,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-18 18:44:54,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2022-11-18 18:44:54,668 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 18:44:54,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2022-11-18 18:44:54,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-18 18:44:54,669 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-18 18:44:54,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-18 18:44:54,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:44:54,669 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:44:54,669 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:44:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:44:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:44:54,670 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 18:44:54,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:44:54,671 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-11-18 18:44:54,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2022-11-18 18:44:54,671 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 18:44:54,671 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 18:44:54,671 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-18 18:44:54,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-18 18:44:54,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-18 18:44:54,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:44:54,672 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:44:54,672 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:44:54,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:44:54,673 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 18:44:54,673 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-18 18:44:54,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-18 18:44:54,674 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-18 18:44:54,674 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-18 18:44:54,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 06:44:54 BoogieIcfgContainer [2022-11-18 18:44:54,682 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-18 18:44:54,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:44:54,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:44:54,683 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:44:54,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:30" (3/4) ... [2022-11-18 18:44:54,687 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-18 18:44:54,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:44:54,688 INFO L158 Benchmark]: Toolchain (without parser) took 24832.72ms. Allocated memory was 115.3MB in the beginning and 239.1MB in the end (delta: 123.7MB). Free memory was 89.1MB in the beginning and 129.2MB in the end (delta: -40.2MB). Peak memory consumption was 84.3MB. Max. memory is 16.1GB. [2022-11-18 18:44:54,689 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 115.3MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:44:54,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.04ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 91.1MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 18:44:54,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.53ms. Allocated memory is still 115.3MB. Free memory was 90.8MB in the beginning and 89.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:44:54,690 INFO L158 Benchmark]: Boogie Preprocessor took 39.22ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 88.6MB in the end (delta: 898.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:44:54,690 INFO L158 Benchmark]: RCFGBuilder took 371.76ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 79.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:44:54,691 INFO L158 Benchmark]: BuchiAutomizer took 24036.94ms. Allocated memory was 115.3MB in the beginning and 239.1MB in the end (delta: 123.7MB). Free memory was 79.0MB in the beginning and 129.2MB in the end (delta: -50.3MB). Peak memory consumption was 75.6MB. Max. memory is 16.1GB. [2022-11-18 18:44:54,691 INFO L158 Benchmark]: Witness Printer took 4.86ms. Allocated memory is still 239.1MB. Free memory is still 129.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:44:54,693 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 115.3MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.04ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 91.1MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.53ms. Allocated memory is still 115.3MB. Free memory was 90.8MB in the beginning and 89.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.22ms. Allocated memory is still 115.3MB. Free memory was 89.5MB in the beginning and 88.6MB in the end (delta: 898.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 371.76ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 79.0MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 24036.94ms. Allocated memory was 115.3MB in the beginning and 239.1MB in the end (delta: 123.7MB). Free memory was 79.0MB in the beginning and 129.2MB in the end (delta: -50.3MB). Peak memory consumption was 75.6MB. Max. memory is 16.1GB. * Witness Printer took 4.86ms. Allocated memory is still 239.1MB. Free memory is still 129.2MB. 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 12 terminating modules (8 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 23.9s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 16.3s. Construction of modules took 1.9s. Büchi inclusion checks took 5.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 96 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 611 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 590 mSDsluCounter, 878 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 635 mSDsCounter, 346 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2166 IncrementalHoareTripleChecker+Invalid, 2512 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 346 mSolverCounterUnsat, 243 mSDtfsCounter, 2166 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax100 hnf100 lsp92 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf93 smp78 dnf100 smp100 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 52ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-18 18:44:54,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:54,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:55,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-11-18 18:44:55,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-11-18 18:44:55,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:55,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:55,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-18 18:44:56,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-11-18 18:44:56,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-11-18 18:44:56,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-18 18:44:56,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df1b7e0a-0a53-476e-8af8-c64bf1cb7724/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE