./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:45:48,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:45:48,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:45:48,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:45:48,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:45:48,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:45:48,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:45:48,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:45:48,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:45:48,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:45:48,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:45:48,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:45:48,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:45:48,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:45:48,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:45:48,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:45:48,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:45:48,088 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:45:48,090 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:45:48,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:45:48,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:45:48,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:45:48,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:45:48,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:45:48,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:45:48,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:45:48,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:45:48,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:45:48,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:45:48,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:45:48,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:45:48,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:45:48,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:45:48,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:45:48,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:45:48,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:45:48,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:45:48,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:45:48,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:45:48,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:45:48,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:45:48,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:45:48,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:45:48,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:45:48,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:45:48,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:45:48,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:45:48,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:45:48,144 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:45:48,144 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:45:48,144 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:45:48,144 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:45:48,145 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:45:48,145 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:45:48,145 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:45:48,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:45:48,146 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:45:48,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:45:48,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:45:48,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:45:48,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:45:48,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:45:48,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:45:48,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:45:48,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:45:48,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:45:48,148 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:45:48,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:45:48,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:45:48,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:45:48,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:45:48,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:45:48,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:45:48,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:45:48,151 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:45:48,151 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_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5952061731474d390646c291ccf1d0136c1d856e30481accbc86db371431d703 [2021-10-21 19:45:48,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:45:48,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:45:48,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:45:48,440 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:45:48,441 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:45:48,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2021-10-21 19:45:48,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/data/685a87095/3209a1887b434c20a13e61e85e2e2a21/FLAG807a72148 [2021-10-21 19:45:49,018 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:45:49,019 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c [2021-10-21 19:45:49,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/data/685a87095/3209a1887b434c20a13e61e85e2e2a21/FLAG807a72148 [2021-10-21 19:45:49,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/data/685a87095/3209a1887b434c20a13e61e85e2e2a21 [2021-10-21 19:45:49,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:45:49,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:45:49,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:45:49,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:45:49,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:45:49,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9f9129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49, skipping insertion in model container [2021-10-21 19:45:49,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,420 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:45:49,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:45:49,588 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2021-10-21 19:45:49,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:45:49,608 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:45:49,627 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/sv-benchmarks/c/recursive-simple/fibo_2calls_8-2.c[947,960] [2021-10-21 19:45:49,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:45:49,644 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:45:49,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49 WrapperNode [2021-10-21 19:45:49,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:45:49,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:45:49,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:45:49,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:45:49,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:45:49,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:45:49,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:45:49,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:45:49,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:45:49,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:45:49,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:45:49,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:45:49,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (1/1) ... [2021-10-21 19:45:49,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:49,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:49,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:49,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:45:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:45:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-10-21 19:45:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-10-21 19:45:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:45:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-10-21 19:45:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-10-21 19:45:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:45:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:45:50,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:45:50,030 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-21 19:45:50,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:50 BoogieIcfgContainer [2021-10-21 19:45:50,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:45:50,033 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:45:50,033 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:45:50,036 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:45:50,037 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:45:50,037 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:45:49" (1/3) ... [2021-10-21 19:45:50,039 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d83d612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:45:50, skipping insertion in model container [2021-10-21 19:45:50,039 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:45:50,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:45:49" (2/3) ... [2021-10-21 19:45:50,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2d83d612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:45:50, skipping insertion in model container [2021-10-21 19:45:50,040 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:45:50,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:50" (3/3) ... [2021-10-21 19:45:50,041 INFO L389 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_8-2.c [2021-10-21 19:45:50,085 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:45:50,085 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:45:50,085 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:45:50,085 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:45:50,085 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:45:50,086 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:45:50,086 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:45:50,086 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:45:50,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 19:45:50,126 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 19:45:50,126 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:45:50,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:45:50,134 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 19:45:50,134 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:50,134 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:45:50,134 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 19:45:50,139 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 19:45:50,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:45:50,140 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:45:50,140 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-21 19:45:50,141 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:50,147 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 15#L39true call main_#t~ret11 := fibo1(main_~x~0);< 5#fibo1ENTRYtrue [2021-10-21 19:45:50,148 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret7 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret9 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-10-21 19:45:50,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:50,154 INFO L82 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-10-21 19:45:50,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:50,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290222418] [2021-10-21 19:45:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:50,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:50,263 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:45:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:50,327 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:45:50,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:50,330 INFO L82 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-10-21 19:45:50,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:50,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702993976] [2021-10-21 19:45:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:50,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:50,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:50,352 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:45:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:50,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:45:50,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:50,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-10-21 19:45:50,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:50,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392875230] [2021-10-21 19:45:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:50,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:50,416 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:45:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:50,457 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:45:50,750 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:45:50,751 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:45:50,751 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:45:50,751 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:45:50,751 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:45:50,752 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:50,752 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:45:50,752 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:45:50,752 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2021-10-21 19:45:50,752 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:45:50,752 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:45:50,797 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,810 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,816 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:50,965 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:45:50,965 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:45:50,967 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:50,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:50,970 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:50,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:45:50,974 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:50,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,006 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:51,006 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:51,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,044 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,049 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:51,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:45:51,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:51,081 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:51,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,119 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:45:51,129 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:51,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,151 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:51,151 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:51,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:45:51,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:51,200 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,221 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:51,222 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:51,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:45:51,255 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:51,255 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:51,263 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:51,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,288 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:45:51,302 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:51,308 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,331 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:51,331 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:51,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,367 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:45:51,374 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:51,374 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:51,399 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:51,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:45:51,425 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:51,425 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,437 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:51,437 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:51,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,461 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:45:51,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:51,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:45:51,535 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:45:51,535 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:51,605 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:45:51,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,608 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:45:51,608 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:45:51,608 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:45:51,608 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:45:51,608 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:45:51,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,609 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:45:51,609 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:45:51,609 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration1_Loop [2021-10-21 19:45:51,609 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:45:51,609 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:45:51,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:51,706 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:45:51,711 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:45:51,713 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,717 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,721 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:51,731 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:51,731 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:51,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:51,732 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:51,732 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:51,735 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:51,735 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:51,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:45:51,749 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:51,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,785 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:45:51,790 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:51,799 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:51,799 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:51,799 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:51,799 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:51,800 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:51,800 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:51,800 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:51,801 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:51,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-10-21 19:45:51,823 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,824 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:45:51,826 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:51,833 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:51,833 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:51,833 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:51,834 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:51,834 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:51,834 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:51,834 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:51,848 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:51,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,892 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:45:51,898 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:51,905 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:51,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:51,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:51,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:51,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:51,906 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:51,906 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:51,907 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:51,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,929 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:45:51,941 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:51,948 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:51,948 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:51,948 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:51,948 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:51,948 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:51,949 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:51,949 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:51,963 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:51,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:51,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:51,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:51,992 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:51,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:45:51,996 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:52,004 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:52,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:52,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:52,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:52,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:52,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:52,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:52,022 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:52,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:52,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:52,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:52,059 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:52,066 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:52,075 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:52,075 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:52,075 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:52,075 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:52,076 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:52,076 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:52,076 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:52,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 19:45:52,090 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:52,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:52,110 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:52,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:52,111 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:52,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 19:45:52,112 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:52,119 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:52,120 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:52,120 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:52,120 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:52,120 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:52,120 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:52,121 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:52,122 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:52,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:52,141 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:52,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:52,142 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:52,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 19:45:52,147 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:52,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:52,157 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:52,157 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:52,157 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:52,157 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:52,158 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:52,158 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:52,169 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:45:52,173 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 19:45:52,173 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:45:52,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:52,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:52,189 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:52,226 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:45:52,226 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:45:52,226 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:45:52,227 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-10-21 19:45:52,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 19:45:52,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:52,253 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:45:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:45:52,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:45:52,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:52,450 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-21 19:45:52,452 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:45:52,683 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2021-10-21 19:45:52,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:45:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:45:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-10-21 19:45:52,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-21 19:45:52,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:45:52,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-21 19:45:52,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:45:52,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-10-21 19:45:52,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:45:52,695 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-10-21 19:45:52,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 19:45:52,717 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-10-21 19:45:52,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-21 19:45:52,718 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-21 19:45:52,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-10-21 19:45:52,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:45:52,720 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-10-21 19:45:52,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:52,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-10-21 19:45:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-21 19:45:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-21 19:45:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-10-21 19:45:52,779 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-21 19:45:52,779 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-21 19:45:52,779 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:45:52,779 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-10-21 19:45:52,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 19:45:52,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:45:52,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:45:52,783 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:52,783 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:52,784 INFO L791 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 197#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 214#L39 call main_#t~ret11 := fibo1(main_~x~0);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret7 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret9 := fibo1(~n - 1);< 216#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#46#return; 207#L25-1 [2021-10-21 19:45:52,784 INFO L793 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret10 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret7 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret9 := fibo1(~n - 1);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#46#return; 207#L25-1 [2021-10-21 19:45:52,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:52,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-10-21 19:45:52,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:52,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882784650] [2021-10-21 19:45:52,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:52,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-21 19:45:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:45:52,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:52,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882784650] [2021-10-21 19:45:52,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882784650] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:52,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:52,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:45:52,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989670802] [2021-10-21 19:45:52,880 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:45:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:52,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-10-21 19:45:52,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:52,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492369847] [2021-10-21 19:45:52,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:52,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:52,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 19:45:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:45:52,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:52,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492369847] [2021-10-21 19:45:52,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492369847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:45:52,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:45:52,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:45:52,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880246558] [2021-10-21 19:45:52,943 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:45:52,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:52,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:45:52,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:45:52,947 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:45:53,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:53,037 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-10-21 19:45:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:45:53,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-10-21 19:45:53,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 19:45:53,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-10-21 19:45:53,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-10-21 19:45:53,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-21 19:45:53,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-10-21 19:45:53,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:45:53,046 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-10-21 19:45:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-10-21 19:45:53,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-10-21 19:45:53,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2021-10-21 19:45:53,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-10-21 19:45:53,070 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-21 19:45:53,070 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-21 19:45:53,070 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:45:53,070 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-10-21 19:45:53,074 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-21 19:45:53,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:45:53,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:45:53,076 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:53,076 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:53,077 INFO L791 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 342#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 360#L39 call main_#t~ret11 := fibo1(main_~x~0);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret7 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret9 := fibo1(~n - 1);< 362#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 386#fibo1FINAL assume true; 385#fibo1EXIT >#46#return; 351#L25-1 [2021-10-21 19:45:53,077 INFO L793 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret10 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret7 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret9 := fibo1(~n - 1);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 351#L25-1 [2021-10-21 19:45:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:53,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-10-21 19:45:53,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:53,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771852048] [2021-10-21 19:45:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:53,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-21 19:45:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:53,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:53,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771852048] [2021-10-21 19:45:53,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771852048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:53,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55910273] [2021-10-21 19:45:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:53,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:53,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:53,210 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:53,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 19:45:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:53,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:45:53,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:53,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55910273] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:53,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:45:53,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-21 19:45:53,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525803046] [2021-10-21 19:45:53,406 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:45:53,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:53,407 INFO L82 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-10-21 19:45:53,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:53,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055722319] [2021-10-21 19:45:53,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:53,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:53,421 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:45:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:53,428 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:45:53,713 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:45:53,713 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:45:53,714 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:45:53,714 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:45:53,714 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:45:53,714 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:53,714 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:45:53,714 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:45:53,714 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2021-10-21 19:45:53,714 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:45:53,714 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:45:53,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,728 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:53,791 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:45:53,791 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:45:53,791 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:53,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:53,792 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:53,802 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:53,802 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:53,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 19:45:53,826 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:53,826 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:53,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:53,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:53,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:53,854 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:53,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 19:45:53,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:53,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:53,865 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:53,865 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:53,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:53,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:53,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:53,886 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:53,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 19:45:53,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:53,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:53,898 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:53,898 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:53,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-10-21 19:45:53,917 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:53,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:53,918 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:53,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 19:45:53,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:53,919 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:53,927 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:45:53,927 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:45:53,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-10-21 19:45:53,947 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:53,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:53,947 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:53,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:53,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:53,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 19:45:53,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-21 19:45:53,984 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:53,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:53,985 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:53,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:45:53,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:53,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 19:45:55,195 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:45:55,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:55,201 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:45:55,201 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:45:55,201 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:45:55,201 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:45:55,201 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:45:55,201 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:55,201 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:45:55,201 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:45:55,201 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration3_Loop [2021-10-21 19:45:55,201 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:45:55,201 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:45:55,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,231 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:55,296 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:45:55,296 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:45:55,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:55,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:55,297 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:55,314 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:55,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:55,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:55,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:55,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:55,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:55,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:55,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:55,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 19:45:55,341 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:55,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:55,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:55,378 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:55,380 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:55,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:55,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:55,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:55,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:55,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:55,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:55,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:55,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-21 19:45:55,405 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:55,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:55,445 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:55,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:55,446 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:55,448 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:55,458 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:55,458 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:55,458 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:55,459 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:55,459 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:55,459 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:55,459 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:55,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-21 19:45:55,485 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:45:55,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:55,521 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:55,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:55,523 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:55,525 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:45:55,534 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:45:55,534 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:45:55,534 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:45:55,534 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:45:55,534 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:45:55,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 19:45:55,538 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:45:55,538 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:45:55,557 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:45:55,560 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 19:45:55,560 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:45:55,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:55,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:55,562 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:55,564 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:45:55,565 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:45:55,565 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:45:55,565 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-10-21 19:45:55,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 19:45:55,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:55,601 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:45:55,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:55,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:45:55,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:55,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:45:55,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:56,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:45:56,017 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-10-21 19:45:56,017 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:45:56,445 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2021-10-21 19:45:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-10-21 19:45:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-21 19:45:56,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-10-21 19:45:56,448 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-10-21 19:45:56,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:45:56,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-10-21 19:45:56,449 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:45:56,449 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-10-21 19:45:56,451 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:45:56,451 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-10-21 19:45:56,459 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 19:45:56,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-10-21 19:45:56,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-10-21 19:45:56,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-10-21 19:45:56,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-10-21 19:45:56,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:45:56,468 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-10-21 19:45:56,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-10-21 19:45:56,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-10-21 19:45:56,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2021-10-21 19:45:56,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-10-21 19:45:56,487 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-10-21 19:45:56,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:45:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:45:56,488 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-21 19:45:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:56,632 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2021-10-21 19:45:56,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:45:56,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2021-10-21 19:45:56,647 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 19:45:56,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2021-10-21 19:45:56,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-10-21 19:45:56,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-10-21 19:45:56,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2021-10-21 19:45:56,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:45:56,662 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2021-10-21 19:45:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2021-10-21 19:45:56,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-21 19:45:56,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 113 states have internal predecessors, (130), 38 states have call successors, (40), 20 states have call predecessors, (40), 26 states have return successors, (55), 33 states have call predecessors, (55), 36 states have call successors, (55) [2021-10-21 19:45:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2021-10-21 19:45:56,683 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-21 19:45:56,683 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-21 19:45:56,683 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:45:56,684 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2021-10-21 19:45:56,688 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 19:45:56,689 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:45:56,689 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:45:56,698 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-21 19:45:56,698 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:45:56,699 INFO L791 eck$LassoCheckResult]: Stem: 1156#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1157#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 1185#L39 call main_#t~ret11 := fibo1(main_~x~0);< 1219#fibo1ENTRY ~n := #in~n; 1207#L10 assume !(~n < 1); 1202#L12 assume !(1 == ~n); 1165#L15 call #t~ret7 := fibo2(~n - 1);< 1208#fibo2ENTRY ~n := #in~n; 1215#L20 assume !(~n < 1); 1164#L22 assume !(1 == ~n); 1166#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume !(~n < 1); 1247#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume ~n < 1;#res := 0; 1204#fibo2FINAL assume true; 1205#fibo2EXIT >#50#return; 1187#L15-1 call #t~ret8 := fibo2(~n - 2);< 1191#fibo2ENTRY ~n := #in~n; 1315#L20 assume !(~n < 1); 1314#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1251#L10 assume !(~n < 1); 1255#L12 assume 1 == ~n;#res := 1; 1256#fibo1FINAL assume true; 1245#fibo1EXIT >#46#return; 1236#L25-1 call #t~ret10 := fibo1(~n - 2);< 1178#fibo1ENTRY ~n := #in~n; 1241#L10 assume !(~n < 1); 1240#L12 assume !(1 == ~n); 1177#L15 call #t~ret7 := fibo2(~n - 1);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume ~n < 1;#res := 0; 1232#fibo2FINAL assume true; 1239#fibo2EXIT >#50#return; 1176#L15-1 call #t~ret8 := fibo2(~n - 2);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume !(~n < 1); 1227#L22 assume 1 == ~n;#res := 1; 1228#fibo2FINAL assume true; 1304#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-21 19:45:56,699 INFO L793 eck$LassoCheckResult]: Loop: 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-21 19:45:56,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:56,700 INFO L82 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-10-21 19:45:56,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:56,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363180438] [2021-10-21 19:45:56,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:56,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:56,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:45:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 19:45:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 19:45:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:45:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 19:45:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-21 19:45:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 19:45:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:56,918 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 25 proven. 25 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-10-21 19:45:56,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:56,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363180438] [2021-10-21 19:45:56,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363180438] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:56,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226504626] [2021-10-21 19:45:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:56,919 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:56,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:56,920 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:56,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-21 19:45:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:45:57,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 17 proven. 91 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-21 19:45:57,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226504626] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:57,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:45:57,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13] total 17 [2021-10-21 19:45:57,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063720208] [2021-10-21 19:45:57,374 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:45:57,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:57,374 INFO L82 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-10-21 19:45:57,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:57,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320601239] [2021-10-21 19:45:57,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:57,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 19:45:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 19:45:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-21 19:45:57,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 19:45:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-21 19:45:57,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:57,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320601239] [2021-10-21 19:45:57,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320601239] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:57,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916335311] [2021-10-21 19:45:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:57,466 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:57,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:57,481 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:57,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-21 19:45:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:57,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:45:57,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-21 19:45:57,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916335311] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:57,783 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:45:57,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2021-10-21 19:45:57,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611483936] [2021-10-21 19:45:57,784 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:45:57,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:45:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:45:57,785 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2021-10-21 19:45:58,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:58,011 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2021-10-21 19:45:58,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:45:58,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2021-10-21 19:45:58,016 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 19:45:58,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2021-10-21 19:45:58,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-21 19:45:58,022 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-10-21 19:45:58,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2021-10-21 19:45:58,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:45:58,023 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-10-21 19:45:58,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2021-10-21 19:45:58,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2021-10-21 19:45:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 115 states have (on average 1.182608695652174) internal successors, (136), 125 states have internal predecessors, (136), 38 states have call successors, (39), 24 states have call predecessors, (39), 31 states have return successors, (63), 34 states have call predecessors, (63), 36 states have call successors, (63) [2021-10-21 19:45:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-10-21 19:45:58,040 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-21 19:45:58,040 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-21 19:45:58,040 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:45:58,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2021-10-21 19:45:58,042 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 19:45:58,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:45:58,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:45:58,044 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:58,044 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:45:58,044 INFO L791 eck$LassoCheckResult]: Stem: 2262#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2263#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 2297#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2331#fibo1ENTRY ~n := #in~n; 2320#L10 assume !(~n < 1); 2313#L12 assume !(1 == ~n); 2314#L15 call #t~ret7 := fibo2(~n - 1);< 2322#fibo2ENTRY ~n := #in~n; 2403#L20 assume !(~n < 1); 2402#L22 assume !(1 == ~n); 2306#L25 call #t~ret9 := fibo1(~n - 1);< 2345#fibo1ENTRY ~n := #in~n; 2343#L10 assume !(~n < 1); 2342#L12 assume !(1 == ~n); 2317#L15 call #t~ret7 := fibo2(~n - 1);< 2336#fibo2ENTRY ~n := #in~n; 2366#L20 assume !(~n < 1); 2364#L22 assume !(1 == ~n); 2273#L25 call #t~ret9 := fibo1(~n - 1);< 2345#fibo1ENTRY ~n := #in~n; 2346#L10 assume !(~n < 1); 2375#L12 assume 1 == ~n;#res := 1; 2376#fibo1FINAL assume true; 2421#fibo1EXIT >#46#return; 2416#L25-1 call #t~ret10 := fibo1(~n - 2);< 2418#fibo1ENTRY ~n := #in~n; 2422#L10 assume ~n < 1;#res := 0; 2419#fibo1FINAL assume true; 2415#fibo1EXIT >#48#return; 2411#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2409#fibo2FINAL assume true; 2383#fibo2EXIT >#50#return; 2385#L15-1 [2021-10-21 19:45:58,045 INFO L793 eck$LassoCheckResult]: Loop: 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume !(1 == ~n); 2275#L25 call #t~ret9 := fibo1(~n - 1);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume !(1 == ~n); 2275#L25 call #t~ret9 := fibo1(~n - 1);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume 1 == ~n;#res := 1; 2407#fibo2FINAL assume true; 2390#fibo2EXIT >#50#return; 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume ~n < 1;#res := 0; 2404#fibo2FINAL assume true; 2401#fibo2EXIT >#52#return; 2384#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2400#fibo1FINAL assume true; 2393#fibo1EXIT >#46#return; 2276#L25-1 call #t~ret10 := fibo1(~n - 2);< 2396#fibo1ENTRY ~n := #in~n; 2398#L10 assume !(~n < 1); 2392#L12 assume !(1 == ~n); 2387#L15 call #t~ret7 := fibo2(~n - 1);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume !(~n < 1); 2406#L22 assume 1 == ~n;#res := 1; 2407#fibo2FINAL assume true; 2390#fibo2EXIT >#50#return; 2385#L15-1 call #t~ret8 := fibo2(~n - 2);< 2305#fibo2ENTRY ~n := #in~n; 2405#L20 assume ~n < 1;#res := 0; 2404#fibo2FINAL assume true; 2401#fibo2EXIT >#52#return; 2384#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2400#fibo1FINAL assume true; 2393#fibo1EXIT >#48#return; 2391#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2388#fibo2FINAL assume true; 2386#fibo2EXIT >#50#return; 2385#L15-1 [2021-10-21 19:45:58,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:58,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-10-21 19:45:58,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:58,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255215378] [2021-10-21 19:45:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:58,046 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 19:45:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:45:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:45:58,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:58,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255215378] [2021-10-21 19:45:58,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255215378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:58,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488529043] [2021-10-21 19:45:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:58,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:58,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:58,193 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:58,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-21 19:45:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:45:58,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:58,425 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:45:58,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488529043] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:58,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:45:58,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 15 [2021-10-21 19:45:58,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828197026] [2021-10-21 19:45:58,426 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:45:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:58,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-10-21 19:45:58,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:58,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973274281] [2021-10-21 19:45:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:58,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-21 19:45:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:45:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:45:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:45:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-21 19:45:58,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:58,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973274281] [2021-10-21 19:45:58,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973274281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:58,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162877365] [2021-10-21 19:45:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:58,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:58,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:58,649 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:58,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-21 19:45:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:58,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:45:58,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-21 19:45:58,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162877365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:58,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:45:58,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-21 19:45:58,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190083022] [2021-10-21 19:45:58,980 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:45:58,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:45:58,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:45:58,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:45:58,981 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand has 16 states, 13 states have (on average 2.230769230769231) internal successors, (29), 11 states have internal predecessors, (29), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 19:45:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:45:59,220 INFO L93 Difference]: Finished difference Result 206 states and 268 transitions. [2021-10-21 19:45:59,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:45:59,221 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 206 states and 268 transitions. [2021-10-21 19:45:59,225 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 19:45:59,232 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 206 states to 203 states and 264 transitions. [2021-10-21 19:45:59,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 133 [2021-10-21 19:45:59,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2021-10-21 19:45:59,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 203 states and 264 transitions. [2021-10-21 19:45:59,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:45:59,239 INFO L681 BuchiCegarLoop]: Abstraction has 203 states and 264 transitions. [2021-10-21 19:45:59,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states and 264 transitions. [2021-10-21 19:45:59,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 194. [2021-10-21 19:45:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 132 states have internal predecessors, (143), 39 states have call successors, (40), 25 states have call predecessors, (40), 33 states have return successors, (66), 36 states have call predecessors, (66), 37 states have call successors, (66) [2021-10-21 19:45:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 249 transitions. [2021-10-21 19:45:59,268 INFO L704 BuchiCegarLoop]: Abstraction has 194 states and 249 transitions. [2021-10-21 19:45:59,269 INFO L587 BuchiCegarLoop]: Abstraction has 194 states and 249 transitions. [2021-10-21 19:45:59,269 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:45:59,269 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 194 states and 249 transitions. [2021-10-21 19:45:59,271 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-21 19:45:59,271 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:45:59,271 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:45:59,272 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:59,272 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:45:59,273 INFO L791 eck$LassoCheckResult]: Stem: 3059#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3060#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 3092#L39 call main_#t~ret11 := fibo1(main_~x~0);< 3125#fibo1ENTRY ~n := #in~n; 3181#L10 assume !(~n < 1); 3180#L12 assume !(1 == ~n); 3069#L15 call #t~ret7 := fibo2(~n - 1);< 3179#fibo2ENTRY ~n := #in~n; 3118#L20 assume !(~n < 1); 3068#L22 assume !(1 == ~n); 3070#L25 call #t~ret9 := fibo1(~n - 1);< 3086#fibo1ENTRY ~n := #in~n; 3087#L10 assume !(~n < 1); 3109#L12 assume !(1 == ~n); 3110#L15 call #t~ret7 := fibo2(~n - 1);< 3115#fibo2ENTRY ~n := #in~n; 3124#L20 assume !(~n < 1); 3170#L22 assume !(1 == ~n); 3105#L25 call #t~ret9 := fibo1(~n - 1);< 3152#fibo1ENTRY ~n := #in~n; 3153#L10 assume !(~n < 1); 3177#L12 assume !(1 == ~n); 3168#L15 call #t~ret7 := fibo2(~n - 1);< 3169#fibo2ENTRY ~n := #in~n; 3174#L20 assume !(~n < 1); 3172#L22 assume 1 == ~n;#res := 1; 3171#fibo2FINAL assume true; 3167#fibo2EXIT >#50#return; 3165#L15-1 call #t~ret8 := fibo2(~n - 2);< 3166#fibo2ENTRY ~n := #in~n; 3175#L20 assume ~n < 1;#res := 0; 3173#fibo2FINAL assume true; 3164#fibo2EXIT >#52#return; 3163#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 3161#fibo1FINAL assume true; 3155#fibo1EXIT >#46#return; 3146#L25-1 call #t~ret10 := fibo1(~n - 2);< 3154#fibo1ENTRY ~n := #in~n; 3243#L10 assume ~n < 1;#res := 0; 3244#fibo1FINAL assume true; 3238#fibo1EXIT >#48#return; 3219#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 3218#fibo2FINAL assume true; 3215#fibo2EXIT >#50#return; 3065#L15-1 call #t~ret8 := fibo2(~n - 2);< 3123#fibo2ENTRY [2021-10-21 19:45:59,273 INFO L793 eck$LassoCheckResult]: Loop: 3123#fibo2ENTRY ~n := #in~n; 3116#L20 assume !(~n < 1); 3061#L22 assume !(1 == ~n); 3067#L25 call #t~ret9 := fibo1(~n - 1);< 3200#fibo1ENTRY ~n := #in~n; 3213#L10 assume !(~n < 1); 3209#L12 assume !(1 == ~n); 3064#L15 call #t~ret7 := fibo2(~n - 1);< 3123#fibo2ENTRY [2021-10-21 19:45:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:59,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1055972758, now seen corresponding path program 1 times [2021-10-21 19:45:59,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:59,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597687390] [2021-10-21 19:45:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:59,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 19:45:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:45:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:45:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:45:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,363 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-21 19:45:59,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:45:59,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597687390] [2021-10-21 19:45:59,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597687390] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:59,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722525563] [2021-10-21 19:45:59,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:59,364 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:45:59,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:59,369 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:45:59,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-21 19:45:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:45:59,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:45:59,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:45:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 19:45:59,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722525563] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:45:59,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:45:59,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 20 [2021-10-21 19:45:59,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585733015] [2021-10-21 19:45:59,776 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:45:59,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:45:59,776 INFO L82 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 2 times [2021-10-21 19:45:59,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:45:59,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469505559] [2021-10-21 19:45:59,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:45:59,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:45:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:59,791 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:45:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:45:59,794 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:45:59,901 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:45:59,901 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:45:59,901 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:45:59,901 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:45:59,901 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:45:59,901 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:59,901 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:45:59,902 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:45:59,902 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration6_Loop [2021-10-21 19:45:59,902 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:45:59,902 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:45:59,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,920 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:45:59,972 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:45:59,972 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:45:59,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:45:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:45:59,978 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:45:59,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:45:59,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:45:59,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 19:46:00,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:00,043 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:00,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:00,044 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:00,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:46:00,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:00,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 19:46:00,153 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:46:00,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:00,159 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:46:00,159 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:46:00,159 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:46:00,159 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:46:00,159 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:46:00,159 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:00,159 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:46:00,159 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:46:00,159 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration6_Loop [2021-10-21 19:46:00,159 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:46:00,159 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:46:00,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,180 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,182 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,184 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:00,237 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:46:00,237 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:46:00,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:00,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:00,239 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:00,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 19:46:00,246 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:00,254 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:00,255 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:00,255 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:00,255 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:00,255 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:00,256 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:00,256 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:00,281 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:00,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:00,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:00,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:00,317 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:00,321 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:00,330 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:00,330 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:00,330 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:00,331 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:00,331 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:00,331 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:00,331 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:00,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-21 19:46:00,353 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:00,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:00,388 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:00,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:00,393 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:00,395 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:00,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:00,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:00,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:00,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:00,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:00,405 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:00,405 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:00,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-21 19:46:00,417 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:46:00,422 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:46:00,422 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:46:00,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:00,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:00,424 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:00,425 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:46:00,425 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:46:00,425 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:46:00,426 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-10-21 19:46:00,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-21 19:46:00,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:00,463 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:46:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:00,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:46:00,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:01,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:01,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:01,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:01,236 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-21 19:46:01,236 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:01,404 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 349 states and 444 transitions. Complement of second has 24 states. [2021-10-21 19:46:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2021-10-21 19:46:01,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-21 19:46:01,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:01,409 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:46:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:01,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:46:01,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:02,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:02,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:02,089 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-21 19:46:02,089 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:02,231 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 349 states and 444 transitions. Complement of second has 24 states. [2021-10-21 19:46:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:02,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 39 transitions. [2021-10-21 19:46:02,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 39 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-21 19:46:02,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:02,233 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:46:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:02,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:46:02,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:02,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:02,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:02,978 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-21 19:46:02,978 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:03,141 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 194 states and 249 transitions. cyclomatic complexity: 60. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 426 states and 529 transitions. Complement of second has 23 states. [2021-10-21 19:46:03,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:03,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-10-21 19:46:03,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 8 letters. [2021-10-21 19:46:03,143 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:03,143 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 53 letters. Loop has 8 letters. [2021-10-21 19:46:03,144 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:03,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 45 letters. Loop has 16 letters. [2021-10-21 19:46:03,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:03,145 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 426 states and 529 transitions. [2021-10-21 19:46:03,152 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 44 [2021-10-21 19:46:03,159 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 426 states to 329 states and 427 transitions. [2021-10-21 19:46:03,159 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 180 [2021-10-21 19:46:03,159 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2021-10-21 19:46:03,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 329 states and 427 transitions. [2021-10-21 19:46:03,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:03,160 INFO L681 BuchiCegarLoop]: Abstraction has 329 states and 427 transitions. [2021-10-21 19:46:03,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states and 427 transitions. [2021-10-21 19:46:03,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 297. [2021-10-21 19:46:03,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 197 states have (on average 1.1878172588832487) internal successors, (234), 212 states have internal predecessors, (234), 55 states have call successors, (56), 44 states have call predecessors, (56), 45 states have return successors, (90), 40 states have call predecessors, (90), 53 states have call successors, (90) [2021-10-21 19:46:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 380 transitions. [2021-10-21 19:46:03,176 INFO L704 BuchiCegarLoop]: Abstraction has 297 states and 380 transitions. [2021-10-21 19:46:03,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:03,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 19:46:03,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:46:03,177 INFO L87 Difference]: Start difference. First operand 297 states and 380 transitions. Second operand has 20 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 12 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (10), 6 states have call predecessors, (10), 8 states have call successors, (10) [2021-10-21 19:46:03,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:03,732 INFO L93 Difference]: Finished difference Result 405 states and 576 transitions. [2021-10-21 19:46:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-21 19:46:03,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 405 states and 576 transitions. [2021-10-21 19:46:03,744 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 52 [2021-10-21 19:46:03,753 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 405 states to 405 states and 576 transitions. [2021-10-21 19:46:03,753 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 246 [2021-10-21 19:46:03,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 246 [2021-10-21 19:46:03,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 405 states and 576 transitions. [2021-10-21 19:46:03,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:03,754 INFO L681 BuchiCegarLoop]: Abstraction has 405 states and 576 transitions. [2021-10-21 19:46:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states and 576 transitions. [2021-10-21 19:46:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 369. [2021-10-21 19:46:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 236 states have (on average 1.194915254237288) internal successors, (282), 256 states have internal predecessors, (282), 78 states have call successors, (80), 48 states have call predecessors, (80), 55 states have return successors, (146), 64 states have call predecessors, (146), 76 states have call successors, (146) [2021-10-21 19:46:03,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 508 transitions. [2021-10-21 19:46:03,783 INFO L704 BuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2021-10-21 19:46:03,783 INFO L587 BuchiCegarLoop]: Abstraction has 369 states and 508 transitions. [2021-10-21 19:46:03,783 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:46:03,783 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 369 states and 508 transitions. [2021-10-21 19:46:03,787 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 51 [2021-10-21 19:46:03,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:46:03,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:46:03,790 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:03,790 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:03,792 INFO L791 eck$LassoCheckResult]: Stem: 5923#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5924#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 5955#L39 call main_#t~ret11 := fibo1(main_~x~0);< 6004#fibo1ENTRY ~n := #in~n; 6042#L10 assume !(~n < 1); 6041#L12 assume !(1 == ~n); 6037#L15 call #t~ret7 := fibo2(~n - 1);< 6040#fibo2ENTRY ~n := #in~n; 6039#L20 assume !(~n < 1); 6038#L22 assume !(1 == ~n); 6006#L25 call #t~ret9 := fibo1(~n - 1);< 6036#fibo1ENTRY ~n := #in~n; 6035#L10 assume !(~n < 1); 6034#L12 assume !(1 == ~n); 6017#L15 call #t~ret7 := fibo2(~n - 1);< 6018#fibo2ENTRY ~n := #in~n; 6027#L20 assume !(~n < 1); 6028#L22 assume !(1 == ~n); 5965#L25 call #t~ret9 := fibo1(~n - 1);< 6029#fibo1ENTRY ~n := #in~n; 6030#L10 assume !(~n < 1); 6125#L12 assume !(1 == ~n); 6116#L15 call #t~ret7 := fibo2(~n - 1);< 6117#fibo2ENTRY ~n := #in~n; 6123#L20 assume !(~n < 1); 6122#L22 assume 1 == ~n;#res := 1; 6120#fibo2FINAL assume true; 6115#fibo2EXIT >#50#return; 6112#L15-1 call #t~ret8 := fibo2(~n - 2);< 6113#fibo2ENTRY ~n := #in~n; 6118#L20 assume ~n < 1;#res := 0; 6114#fibo2FINAL assume true; 6111#fibo2EXIT >#52#return; 6110#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 6109#fibo1FINAL assume true; 6108#fibo1EXIT >#46#return; 6099#L25-1 call #t~ret10 := fibo1(~n - 2);< 5946#fibo1ENTRY ~n := #in~n; 6102#L10 assume !(~n < 1); 6101#L12 assume !(1 == ~n); 5945#L15 call #t~ret7 := fibo2(~n - 1);< 6098#fibo2ENTRY ~n := #in~n; 6097#L20 assume !(~n < 1); 6094#L22 assume 1 == ~n;#res := 1; 6095#fibo2FINAL assume true; 6210#fibo2EXIT >#50#return; 6143#L15-1 [2021-10-21 19:46:03,793 INFO L793 eck$LassoCheckResult]: Loop: 6143#L15-1 call #t~ret8 := fibo2(~n - 2);< 6142#fibo2ENTRY ~n := #in~n; 6144#L20 assume !(~n < 1); 6228#L22 assume !(1 == ~n); 5986#L25 call #t~ret9 := fibo1(~n - 1);< 5962#fibo1ENTRY ~n := #in~n; 5985#L10 assume !(~n < 1); 5987#L12 assume !(1 == ~n); 5960#L15 call #t~ret7 := fibo2(~n - 1);< 5995#fibo2ENTRY ~n := #in~n; 6003#L20 assume !(~n < 1); 6216#L22 assume 1 == ~n;#res := 1; 6214#fibo2FINAL assume true; 6212#fibo2EXIT >#50#return; 6143#L15-1 [2021-10-21 19:46:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:03,794 INFO L82 PathProgramCache]: Analyzing trace with hash 881386511, now seen corresponding path program 1 times [2021-10-21 19:46:03,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:03,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134354505] [2021-10-21 19:46:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:03,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-21 19:46:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:03,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-10-21 19:46:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 19:46:03,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:03,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134354505] [2021-10-21 19:46:03,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134354505] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:03,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883254231] [2021-10-21 19:46:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:03,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:03,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:03,971 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:03,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-21 19:46:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:04,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:46:04,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:46:04,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883254231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:04,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:04,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 18 [2021-10-21 19:46:04,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401621383] [2021-10-21 19:46:04,430 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:46:04,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:04,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1489002864, now seen corresponding path program 1 times [2021-10-21 19:46:04,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:04,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277869649] [2021-10-21 19:46:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:04,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:46:04,441 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:46:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:46:04,445 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:46:04,618 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:46:04,618 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:46:04,618 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:46:04,618 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:46:04,618 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:46:04,619 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:04,619 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:46:04,619 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:46:04,619 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2021-10-21 19:46:04,619 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:46:04,619 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:46:04,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:04,692 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:46:04,692 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:46:04,692 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:04,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:04,697 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:04,702 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:04,702 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:04,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 19:46:04,721 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:04,721 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:04,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:04,745 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:04,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:04,745 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:04,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 19:46:04,747 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:04,747 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:04,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:04,755 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:04,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-21 19:46:04,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:04,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:04,775 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:04,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 19:46:04,777 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:04,777 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:04,784 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:04,784 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:04,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-21 19:46:04,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:04,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:04,804 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:04,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 19:46:04,805 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:04,806 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:04,813 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:04,814 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:04,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-10-21 19:46:04,833 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:04,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:04,833 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:04,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 19:46:04,841 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:04,848 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:04,875 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:04,875 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:04,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:04,907 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:04,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:04,908 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:04,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:04,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:04,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-21 19:46:04,941 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:04,941 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:04,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:04,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:04,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:04,975 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:04,976 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:04,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:04,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-21 19:46:05,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:05,033 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:05,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:05,034 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:05,036 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:46:05,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:05,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-21 19:46:06,005 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:46:06,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:06,008 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:46:06,008 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:46:06,008 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:46:06,008 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:46:06,008 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:46:06,008 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,008 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:46:06,008 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:46:06,008 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration7_Loop [2021-10-21 19:46:06,008 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:46:06,008 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:46:06,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:06,088 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:46:06,088 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:46:06,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,090 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,098 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:06,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:06,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:06,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:06,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:06,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:06,109 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:06,109 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:06,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-21 19:46:06,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:06,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-10-21 19:46:06,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,151 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-21 19:46:06,152 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:06,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:06,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:06,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:06,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:06,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:06,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:06,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:06,161 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:06,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-10-21 19:46:06,180 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,181 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-21 19:46:06,182 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:06,189 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:06,190 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:06,190 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:06,190 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:06,190 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:06,190 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:06,190 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:06,191 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:06,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:06,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,211 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-21 19:46:06,212 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:06,219 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:06,219 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:06,219 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:06,219 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:06,219 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:06,220 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:06,220 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:06,234 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:06,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:06,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,254 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-21 19:46:06,272 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:06,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:06,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:06,279 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:06,279 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:06,279 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:06,280 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:06,280 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:06,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:06,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-10-21 19:46:06,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,316 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-21 19:46:06,318 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:06,325 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:06,325 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:06,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:06,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:06,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:06,325 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:06,325 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:06,326 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:06,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-10-21 19:46:06,345 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,346 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-21 19:46:06,347 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:06,354 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:06,354 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:06,354 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:06,354 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:06,354 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:06,355 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:06,355 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:06,356 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:06,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:06,377 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,377 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-21 19:46:06,379 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:06,386 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:06,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:06,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:06,387 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:06,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:06,388 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:06,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:06,390 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:46:06,392 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 19:46:06,392 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:46:06,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:06,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:06,394 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:06,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-21 19:46:06,394 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:46:06,394 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:46:06,395 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:46:06,395 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-21 19:46:06,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:06,414 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:46:06,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:06,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:46:06,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:06,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:46:06,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:07,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:07,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:07,068 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-10-21 19:46:07,069 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:46:07,402 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 1274 states and 1770 transitions. Complement of second has 40 states. [2021-10-21 19:46:07,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:46:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 67 transitions. [2021-10-21 19:46:07,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 67 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-21 19:46:07,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:07,405 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:46:07,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:07,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:46:07,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:07,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:46:07,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:07,991 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 8 loop predicates [2021-10-21 19:46:07,991 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:46:08,242 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 582 states and 785 transitions. Complement of second has 26 states. [2021-10-21 19:46:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 2 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:46:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 46 transitions. [2021-10-21 19:46:08,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 46 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-21 19:46:08,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:08,245 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:46:08,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:08,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:08,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:46:08,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:08,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:46:08,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:08,907 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-10-21 19:46:08,907 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145 Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:46:09,312 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 369 states and 508 transitions. cyclomatic complexity: 145. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Result 2713 states and 3811 transitions. Complement of second has 124 states. [2021-10-21 19:46:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 6 states have internal predecessors, (28), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-21 19:46:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 72 transitions. [2021-10-21 19:46:09,314 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 46 letters. Loop has 14 letters. [2021-10-21 19:46:09,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:09,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 60 letters. Loop has 14 letters. [2021-10-21 19:46:09,317 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:09,317 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 72 transitions. Stem has 46 letters. Loop has 28 letters. [2021-10-21 19:46:09,319 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:09,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2713 states and 3811 transitions. [2021-10-21 19:46:09,363 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 157 [2021-10-21 19:46:09,403 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2713 states to 2095 states and 3043 transitions. [2021-10-21 19:46:09,403 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 575 [2021-10-21 19:46:09,405 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 677 [2021-10-21 19:46:09,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2095 states and 3043 transitions. [2021-10-21 19:46:09,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:09,406 INFO L681 BuchiCegarLoop]: Abstraction has 2095 states and 3043 transitions. [2021-10-21 19:46:09,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2095 states and 3043 transitions. [2021-10-21 19:46:09,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2095 to 1775. [2021-10-21 19:46:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1775 states, 1140 states have (on average 1.1771929824561405) internal successors, (1342), 1251 states have internal predecessors, (1342), 375 states have call successors, (405), 220 states have call predecessors, (405), 260 states have return successors, (751), 303 states have call predecessors, (751), 373 states have call successors, (751) [2021-10-21 19:46:09,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1775 states to 1775 states and 2498 transitions. [2021-10-21 19:46:09,527 INFO L704 BuchiCegarLoop]: Abstraction has 1775 states and 2498 transitions. [2021-10-21 19:46:09,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:09,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:46:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:46:09,528 INFO L87 Difference]: Start difference. First operand 1775 states and 2498 transitions. Second operand has 18 states, 16 states have (on average 2.5625) internal successors, (41), 13 states have internal predecessors, (41), 10 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 6 states have call successors, (7) [2021-10-21 19:46:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:09,943 INFO L93 Difference]: Finished difference Result 2563 states and 3815 transitions. [2021-10-21 19:46:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 19:46:09,944 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2563 states and 3815 transitions. [2021-10-21 19:46:09,980 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 232 [2021-10-21 19:46:10,022 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2563 states to 2560 states and 3811 transitions. [2021-10-21 19:46:10,022 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 824 [2021-10-21 19:46:10,024 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 824 [2021-10-21 19:46:10,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2560 states and 3811 transitions. [2021-10-21 19:46:10,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:10,025 INFO L681 BuchiCegarLoop]: Abstraction has 2560 states and 3811 transitions. [2021-10-21 19:46:10,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states and 3811 transitions. [2021-10-21 19:46:10,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2382. [2021-10-21 19:46:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2382 states, 1519 states have (on average 1.1981566820276497) internal successors, (1820), 1658 states have internal predecessors, (1820), 556 states have call successors, (594), 295 states have call predecessors, (594), 307 states have return successors, (1169), 428 states have call predecessors, (1169), 554 states have call successors, (1169) [2021-10-21 19:46:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2382 states to 2382 states and 3583 transitions. [2021-10-21 19:46:10,173 INFO L704 BuchiCegarLoop]: Abstraction has 2382 states and 3583 transitions. [2021-10-21 19:46:10,174 INFO L587 BuchiCegarLoop]: Abstraction has 2382 states and 3583 transitions. [2021-10-21 19:46:10,174 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 19:46:10,174 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2382 states and 3583 transitions. [2021-10-21 19:46:10,193 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-21 19:46:10,193 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:46:10,193 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:46:10,201 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:10,201 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 12, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 6, 5, 5, 5, 5, 4, 4, 1] [2021-10-21 19:46:10,202 INFO L791 eck$LassoCheckResult]: Stem: 16205#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 16206#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 16260#L39 call main_#t~ret11 := fibo1(main_~x~0);< 16308#fibo1ENTRY ~n := #in~n; 16384#L10 assume !(~n < 1); 16383#L12 assume !(1 == ~n); 16379#L15 call #t~ret7 := fibo2(~n - 1);< 16382#fibo2ENTRY ~n := #in~n; 16381#L20 assume !(~n < 1); 16380#L22 assume !(1 == ~n); 16375#L25 call #t~ret9 := fibo1(~n - 1);< 16378#fibo1ENTRY ~n := #in~n; 16377#L10 assume !(~n < 1); 16376#L12 assume !(1 == ~n); 16370#L15 call #t~ret7 := fibo2(~n - 1);< 16374#fibo2ENTRY ~n := #in~n; 16373#L20 assume !(~n < 1); 16372#L22 assume !(1 == ~n); 16353#L25 call #t~ret9 := fibo1(~n - 1);< 16368#fibo1ENTRY ~n := #in~n; 16365#L10 assume !(~n < 1); 16351#L12 assume !(1 == ~n); 16343#L15 call #t~ret7 := fibo2(~n - 1);< 16361#fibo2ENTRY ~n := #in~n; 16359#L20 assume !(~n < 1); 16355#L22 assume 1 == ~n;#res := 1; 16356#fibo2FINAL assume true; 16342#fibo2EXIT >#50#return; 16344#L15-1 call #t~ret8 := fibo2(~n - 2);< 16838#fibo2ENTRY ~n := #in~n; 16836#L20 assume !(~n < 1); 16834#L22 assume !(1 == ~n); 16831#L25 call #t~ret9 := fibo1(~n - 1);< 16832#fibo1ENTRY ~n := #in~n; 16845#L10 assume !(~n < 1); 16843#L12 assume !(1 == ~n); 16841#L15 call #t~ret7 := fibo2(~n - 1);< 16842#fibo2ENTRY ~n := #in~n; 16850#L20 assume !(~n < 1); 16848#L22 assume 1 == ~n;#res := 1; 16847#fibo2FINAL assume true; 16840#fibo2EXIT >#50#return; 16344#L15-1 call #t~ret8 := fibo2(~n - 2);< 16838#fibo2ENTRY ~n := #in~n; 16839#L20 assume !(~n < 1); 17489#L22 assume !(1 == ~n); 17419#L25 call #t~ret9 := fibo1(~n - 1);< 17420#fibo1ENTRY ~n := #in~n; 17484#L10 assume !(~n < 1); 17483#L12 assume 1 == ~n;#res := 1; 17481#fibo1FINAL assume true; 17418#fibo1EXIT >#46#return; 17384#L25-1 call #t~ret10 := fibo1(~n - 2);< 17385#fibo1ENTRY ~n := #in~n; 17395#L10 assume ~n < 1;#res := 0; 17394#fibo1FINAL assume true; 17383#fibo1EXIT >#48#return; 17373#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17372#fibo2FINAL assume true; 17370#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#46#return; 17147#L25-1 [2021-10-21 19:46:10,204 INFO L793 eck$LassoCheckResult]: Loop: 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume !(1 == ~n); 17195#L15 call #t~ret7 := fibo2(~n - 1);< 17201#fibo2ENTRY ~n := #in~n; 17199#L20 assume !(~n < 1); 17197#L22 assume 1 == ~n;#res := 1; 17186#fibo2FINAL assume true; 17209#fibo2EXIT >#50#return; 17189#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17216#L15 call #t~ret7 := fibo2(~n - 1);< 17217#fibo2ENTRY ~n := #in~n; 17328#L20 assume !(~n < 1); 17351#L22 assume 1 == ~n;#res := 1; 17223#fibo2FINAL assume true; 17215#fibo2EXIT >#50#return; 17210#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17227#L15 call #t~ret7 := fibo2(~n - 1);< 17399#fibo2ENTRY ~n := #in~n; 17501#L20 assume !(~n < 1); 17539#L22 assume !(1 == ~n); 17533#L25 call #t~ret9 := fibo1(~n - 1);< 17538#fibo1ENTRY ~n := #in~n; 17772#L10 assume !(~n < 1); 17770#L12 assume !(1 == ~n); 17765#L15 call #t~ret7 := fibo2(~n - 1);< 17768#fibo2ENTRY ~n := #in~n; 17814#L20 assume !(~n < 1); 17835#L22 assume 1 == ~n;#res := 1; 17796#fibo2FINAL assume true; 17764#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#46#return; 17517#L25-1 call #t~ret10 := fibo1(~n - 2);< 17534#fibo1ENTRY ~n := #in~n; 17801#L10 assume !(~n < 1); 17799#L12 assume !(1 == ~n); 17545#L15 call #t~ret7 := fibo2(~n - 1);< 17767#fibo2ENTRY ~n := #in~n; 17782#L20 assume !(~n < 1); 17781#L22 assume 1 == ~n;#res := 1; 17678#fibo2FINAL assume true; 17762#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#48#return; 17510#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17461#fibo2FINAL assume true; 17398#fibo2EXIT >#50#return; 17156#L15-1 call #t~ret8 := fibo2(~n - 2);< 17161#fibo2ENTRY ~n := #in~n; 17364#L20 assume ~n < 1;#res := 0; 17360#fibo2FINAL assume true; 17155#fibo2EXIT >#52#return; 17160#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17393#fibo1FINAL assume true; 17390#fibo1EXIT >#46#return; 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume !(1 == ~n); 17195#L15 call #t~ret7 := fibo2(~n - 1);< 17201#fibo2ENTRY ~n := #in~n; 17199#L20 assume !(~n < 1); 17197#L22 assume 1 == ~n;#res := 1; 17186#fibo2FINAL assume true; 17209#fibo2EXIT >#50#return; 17189#L15-1 call #t~ret8 := fibo2(~n - 2);< 17207#fibo2ENTRY ~n := #in~n; 17244#L20 assume !(~n < 1); 17423#L22 assume !(1 == ~n); 17164#L25 call #t~ret9 := fibo1(~n - 1);< 17236#fibo1ENTRY ~n := #in~n; 17234#L10 assume !(~n < 1); 17226#L12 assume !(1 == ~n); 17227#L15 call #t~ret7 := fibo2(~n - 1);< 17399#fibo2ENTRY ~n := #in~n; 17501#L20 assume !(~n < 1); 17539#L22 assume !(1 == ~n); 17533#L25 call #t~ret9 := fibo1(~n - 1);< 17538#fibo1ENTRY ~n := #in~n; 17772#L10 assume !(~n < 1); 17770#L12 assume !(1 == ~n); 17765#L15 call #t~ret7 := fibo2(~n - 1);< 17768#fibo2ENTRY ~n := #in~n; 17814#L20 assume !(~n < 1); 17835#L22 assume 1 == ~n;#res := 1; 17796#fibo2FINAL assume true; 17764#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#46#return; 17517#L25-1 call #t~ret10 := fibo1(~n - 2);< 17534#fibo1ENTRY ~n := #in~n; 17801#L10 assume !(~n < 1); 17799#L12 assume !(1 == ~n); 17545#L15 call #t~ret7 := fibo2(~n - 1);< 17767#fibo2ENTRY ~n := #in~n; 17782#L20 assume !(~n < 1); 17781#L22 assume 1 == ~n;#res := 1; 17678#fibo2FINAL assume true; 17762#fibo2EXIT >#50#return; 17543#L15-1 call #t~ret8 := fibo2(~n - 2);< 17754#fibo2ENTRY ~n := #in~n; 17797#L20 assume ~n < 1;#res := 0; 17774#fibo2FINAL assume true; 17755#fibo2EXIT >#52#return; 17753#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17737#fibo1FINAL assume true; 17527#fibo1EXIT >#48#return; 17510#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17461#fibo2FINAL assume true; 17398#fibo2EXIT >#50#return; 17156#L15-1 call #t~ret8 := fibo2(~n - 2);< 17161#fibo2ENTRY ~n := #in~n; 17364#L20 assume ~n < 1;#res := 0; 17360#fibo2FINAL assume true; 17155#fibo2EXIT >#52#return; 17160#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17393#fibo1FINAL assume true; 17390#fibo1EXIT >#46#return; 17147#L25-1 call #t~ret10 := fibo1(~n - 2);< 17196#fibo1ENTRY ~n := #in~n; 17205#L10 assume !(~n < 1); 17203#L12 assume 1 == ~n;#res := 1; 17204#fibo1FINAL assume true; 17151#fibo1EXIT >#48#return; 17150#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17371#fibo2FINAL assume true; 17369#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#48#return; 17150#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 17371#fibo2FINAL assume true; 17369#fibo2EXIT >#52#return; 17211#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 17367#fibo1FINAL assume true; 17163#fibo1EXIT >#46#return; 17147#L25-1 [2021-10-21 19:46:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:10,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1399262747, now seen corresponding path program 1 times [2021-10-21 19:46:10,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:10,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656508773] [2021-10-21 19:46:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:10,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-21 19:46:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-10-21 19:46:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 11 proven. 79 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-10-21 19:46:10,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:10,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656508773] [2021-10-21 19:46:10,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656508773] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:10,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773990006] [2021-10-21 19:46:10,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:10,430 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:10,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:10,433 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:10,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-21 19:46:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:10,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:46:10,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:11,176 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 62 proven. 22 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-10-21 19:46:11,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773990006] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:11,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:11,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-10-21 19:46:11,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809401288] [2021-10-21 19:46:11,177 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:46:11,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:11,177 INFO L82 PathProgramCache]: Analyzing trace with hash -993859138, now seen corresponding path program 1 times [2021-10-21 19:46:11,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:11,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760465250] [2021-10-21 19:46:11,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:11,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 19:46:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-21 19:46:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:46:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-21 19:46:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-21 19:46:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:46:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-21 19:46:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-21 19:46:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 2 proven. 113 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2021-10-21 19:46:11,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:11,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760465250] [2021-10-21 19:46:11,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760465250] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:11,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640171605] [2021-10-21 19:46:11,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:11,475 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:11,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:11,477 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:11,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-21 19:46:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:12,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:46:12,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:12,419 INFO L134 CoverageAnalysis]: Checked inductivity of 977 backedges. 155 proven. 1 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2021-10-21 19:46:12,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640171605] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:12,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:12,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-10-21 19:46:12,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049945860] [2021-10-21 19:46:12,421 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:46:12,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:46:12,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:46:12,422 INFO L87 Difference]: Start difference. First operand 2382 states and 3583 transitions. cyclomatic complexity: 1228 Second operand has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 11 states have internal predecessors, (50), 8 states have call successors, (15), 7 states have call predecessors, (15), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-10-21 19:46:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:12,691 INFO L93 Difference]: Finished difference Result 2429 states and 3633 transitions. [2021-10-21 19:46:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:46:12,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2429 states and 3633 transitions. [2021-10-21 19:46:12,737 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-21 19:46:12,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2429 states to 2425 states and 3626 transitions. [2021-10-21 19:46:12,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 759 [2021-10-21 19:46:12,777 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 759 [2021-10-21 19:46:12,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2425 states and 3626 transitions. [2021-10-21 19:46:12,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:12,778 INFO L681 BuchiCegarLoop]: Abstraction has 2425 states and 3626 transitions. [2021-10-21 19:46:12,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states and 3626 transitions. [2021-10-21 19:46:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2404. [2021-10-21 19:46:12,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 1527 states have (on average 1.197773411918795) internal successors, (1829), 1682 states have internal predecessors, (1829), 562 states have call successors, (600), 297 states have call predecessors, (600), 315 states have return successors, (1160), 424 states have call predecessors, (1160), 559 states have call successors, (1160) [2021-10-21 19:46:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3589 transitions. [2021-10-21 19:46:12,879 INFO L704 BuchiCegarLoop]: Abstraction has 2404 states and 3589 transitions. [2021-10-21 19:46:12,879 INFO L587 BuchiCegarLoop]: Abstraction has 2404 states and 3589 transitions. [2021-10-21 19:46:12,879 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-21 19:46:12,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2404 states and 3589 transitions. [2021-10-21 19:46:12,897 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 231 [2021-10-21 19:46:12,898 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:46:12,898 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:46:12,899 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:12,899 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:12,899 INFO L791 eck$LassoCheckResult]: Stem: 22581#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 22582#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 22627#L39 call main_#t~ret11 := fibo1(main_~x~0);< 22681#fibo1ENTRY ~n := #in~n; 22901#L10 assume !(~n < 1); 22894#L12 assume !(1 == ~n); 22707#L15 call #t~ret7 := fibo2(~n - 1);< 22714#fibo2ENTRY ~n := #in~n; 22773#L20 assume !(~n < 1); 22770#L22 assume !(1 == ~n); 22737#L25 call #t~ret9 := fibo1(~n - 1);< 22738#fibo1ENTRY ~n := #in~n; 22757#L10 assume !(~n < 1); 22755#L12 assume !(1 == ~n); 22735#L15 call #t~ret7 := fibo2(~n - 1);< 22750#fibo2ENTRY ~n := #in~n; 22741#L20 assume !(~n < 1); 22739#L22 assume !(1 == ~n); 22715#L25 call #t~ret9 := fibo1(~n - 1);< 22734#fibo1ENTRY ~n := #in~n; 22732#L10 assume !(~n < 1); 22730#L12 assume !(1 == ~n); 22711#L15 call #t~ret7 := fibo2(~n - 1);< 22716#fibo2ENTRY ~n := #in~n; 22774#L20 assume !(~n < 1); 22771#L22 assume !(1 == ~n); 22726#L25 call #t~ret9 := fibo1(~n - 1);< 22769#fibo1ENTRY ~n := #in~n; 22797#L10 assume !(~n < 1); 22792#L12 assume 1 == ~n;#res := 1; 22793#fibo1FINAL assume true; 23632#fibo1EXIT >#46#return; 22807#L25-1 call #t~ret10 := fibo1(~n - 2);< 22810#fibo1ENTRY ~n := #in~n; 23251#L10 assume ~n < 1;#res := 0; 23250#fibo1FINAL assume true; 22806#fibo1EXIT >#48#return; 22804#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 22802#fibo2FINAL assume true; 22758#fibo2EXIT >#50#return; 22702#L15-1 call #t~ret8 := fibo2(~n - 2);< 22723#fibo2ENTRY ~n := #in~n; 22888#L20 assume !(~n < 1); 22886#L22 assume !(1 == ~n); 22880#L25 [2021-10-21 19:46:12,900 INFO L793 eck$LassoCheckResult]: Loop: 22880#L25 call #t~ret9 := fibo1(~n - 1);< 22883#fibo1ENTRY ~n := #in~n; 22968#L10 assume !(~n < 1); 22967#L12 assume !(1 == ~n); 22891#L15 call #t~ret7 := fibo2(~n - 1);< 22893#fibo2ENTRY ~n := #in~n; 23516#L20 assume !(~n < 1); 23062#L22 assume !(1 == ~n); 23063#L25 call #t~ret9 := fibo1(~n - 1);< 23490#fibo1ENTRY ~n := #in~n; 23626#L10 assume !(~n < 1); 23619#L12 assume 1 == ~n;#res := 1; 23616#fibo1FINAL assume true; 23484#fibo1EXIT >#46#return; 22948#L25-1 call #t~ret10 := fibo1(~n - 2);< 22949#fibo1ENTRY ~n := #in~n; 23562#L10 assume ~n < 1;#res := 0; 23560#fibo1FINAL assume true; 23473#fibo1EXIT >#48#return; 22937#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 22935#fibo2FINAL assume true; 22890#fibo2EXIT >#50#return; 22698#L15-1 call #t~ret8 := fibo2(~n - 2);< 22723#fibo2ENTRY ~n := #in~n; 22888#L20 assume !(~n < 1); 22886#L22 assume !(1 == ~n); 22880#L25 [2021-10-21 19:46:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:12,900 INFO L82 PathProgramCache]: Analyzing trace with hash -334000957, now seen corresponding path program 1 times [2021-10-21 19:46:12,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:12,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757818151] [2021-10-21 19:46:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:12,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-21 19:46:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:13,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:46:13,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:13,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757818151] [2021-10-21 19:46:13,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757818151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:13,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771945655] [2021-10-21 19:46:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:13,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:13,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:13,097 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:13,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-21 19:46:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:13,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:46:13,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:13,939 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:46:13,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771945655] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:13,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:13,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 20 [2021-10-21 19:46:13,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785494511] [2021-10-21 19:46:13,941 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:46:13,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:13,941 INFO L82 PathProgramCache]: Analyzing trace with hash 869465037, now seen corresponding path program 1 times [2021-10-21 19:46:13,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:13,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84584629] [2021-10-21 19:46:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:13,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-21 19:46:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:14,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:14,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:46:14,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:14,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84584629] [2021-10-21 19:46:14,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84584629] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:14,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119285672] [2021-10-21 19:46:14,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:14,058 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:14,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:14,062 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:14,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-21 19:46:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:14,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:46:14,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:46:14,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119285672] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:14,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:14,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-10-21 19:46:14,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396415655] [2021-10-21 19:46:14,696 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:46:14,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:46:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:46:14,697 INFO L87 Difference]: Start difference. First operand 2404 states and 3589 transitions. cyclomatic complexity: 1212 Second operand has 13 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-21 19:46:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:14,897 INFO L93 Difference]: Finished difference Result 1480 states and 1973 transitions. [2021-10-21 19:46:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:46:14,898 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1480 states and 1973 transitions. [2021-10-21 19:46:14,937 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 101 [2021-10-21 19:46:14,954 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1480 states to 1281 states and 1737 transitions. [2021-10-21 19:46:14,955 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 489 [2021-10-21 19:46:14,955 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 489 [2021-10-21 19:46:14,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1281 states and 1737 transitions. [2021-10-21 19:46:14,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:14,956 INFO L681 BuchiCegarLoop]: Abstraction has 1281 states and 1737 transitions. [2021-10-21 19:46:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states and 1737 transitions. [2021-10-21 19:46:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1039. [2021-10-21 19:46:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1039 states, 678 states have (on average 1.1592920353982301) internal successors, (786), 733 states have internal predecessors, (786), 204 states have call successors, (213), 137 states have call predecessors, (213), 157 states have return successors, (369), 168 states have call predecessors, (369), 201 states have call successors, (369) [2021-10-21 19:46:14,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1368 transitions. [2021-10-21 19:46:14,998 INFO L704 BuchiCegarLoop]: Abstraction has 1039 states and 1368 transitions. [2021-10-21 19:46:14,998 INFO L587 BuchiCegarLoop]: Abstraction has 1039 states and 1368 transitions. [2021-10-21 19:46:14,998 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-21 19:46:14,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1039 states and 1368 transitions. [2021-10-21 19:46:15,006 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 101 [2021-10-21 19:46:15,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:46:15,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:46:15,007 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 6, 6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:15,007 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:15,008 INFO L791 eck$LassoCheckResult]: Stem: 26765#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 26766#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 26808#L39 call main_#t~ret11 := fibo1(main_~x~0);< 26859#fibo1ENTRY ~n := #in~n; 26893#L10 assume !(~n < 1); 26892#L12 assume !(1 == ~n); 26888#L15 call #t~ret7 := fibo2(~n - 1);< 26891#fibo2ENTRY ~n := #in~n; 26890#L20 assume !(~n < 1); 26889#L22 assume !(1 == ~n); 26884#L25 call #t~ret9 := fibo1(~n - 1);< 26887#fibo1ENTRY ~n := #in~n; 26886#L10 assume !(~n < 1); 26885#L12 assume !(1 == ~n); 26880#L15 call #t~ret7 := fibo2(~n - 1);< 26883#fibo2ENTRY ~n := #in~n; 26882#L20 assume !(~n < 1); 26881#L22 assume !(1 == ~n); 26877#L25 call #t~ret9 := fibo1(~n - 1);< 26879#fibo1ENTRY ~n := #in~n; 26876#L10 assume !(~n < 1); 26878#L12 assume !(1 == ~n); 26870#L15 call #t~ret7 := fibo2(~n - 1);< 26874#fibo2ENTRY ~n := #in~n; 26873#L20 assume !(~n < 1); 26872#L22 assume !(1 == ~n); 26867#L25 call #t~ret9 := fibo1(~n - 1);< 26866#fibo1ENTRY ~n := #in~n; 26869#L10 assume !(~n < 1); 26919#L12 assume !(1 == ~n); 26916#L15 call #t~ret7 := fibo2(~n - 1);< 26917#fibo2ENTRY ~n := #in~n; 26922#L20 assume !(~n < 1); 26921#L22 assume 1 == ~n;#res := 1; 26918#fibo2FINAL assume true; 26915#fibo2EXIT >#50#return; 26913#L15-1 call #t~ret8 := fibo2(~n - 2);< 26914#fibo2ENTRY ~n := #in~n; 26926#L20 assume ~n < 1;#res := 0; 26923#fibo2FINAL assume true; 26912#fibo2EXIT >#52#return; 26911#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 26910#fibo1FINAL assume true; 26909#fibo1EXIT >#46#return; 26804#L25-1 call #t~ret10 := fibo1(~n - 2);< 26907#fibo1ENTRY ~n := #in~n; 26906#L10 assume !(~n < 1); 26905#L12 assume !(1 == ~n); 26775#L15 call #t~ret7 := fibo2(~n - 1);< 26904#fibo2ENTRY ~n := #in~n; 26903#L20 assume !(~n < 1); 26899#L22 assume !(1 == ~n); 26901#L25 call #t~ret9 := fibo1(~n - 1);< 27240#fibo1ENTRY ~n := #in~n; 27265#L10 assume !(~n < 1); 27260#L12 assume !(1 == ~n); 27252#L15 call #t~ret7 := fibo2(~n - 1);< 27256#fibo2ENTRY [2021-10-21 19:46:15,008 INFO L793 eck$LassoCheckResult]: Loop: 27256#fibo2ENTRY ~n := #in~n; 27266#L20 assume !(~n < 1); 27262#L22 assume !(1 == ~n); 27258#L25 call #t~ret9 := fibo1(~n - 1);< 27269#fibo1ENTRY ~n := #in~n; 27267#L10 assume !(~n < 1); 27263#L12 assume !(1 == ~n); 27251#L15 call #t~ret7 := fibo2(~n - 1);< 27256#fibo2ENTRY [2021-10-21 19:46:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1022485656, now seen corresponding path program 2 times [2021-10-21 19:46:15,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:15,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855891345] [2021-10-21 19:46:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:15,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-10-21 19:46:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:15,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 76 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 19:46:15,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:15,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855891345] [2021-10-21 19:46:15,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855891345] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:15,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636787177] [2021-10-21 19:46:15,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:46:15,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:15,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:15,190 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:15,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-21 19:46:15,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:46:15,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:46:15,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:46:15,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 77 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-21 19:46:16,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636787177] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:16,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:16,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 20 [2021-10-21 19:46:16,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205866999] [2021-10-21 19:46:16,047 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:46:16,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:16,048 INFO L82 PathProgramCache]: Analyzing trace with hash -28526872, now seen corresponding path program 3 times [2021-10-21 19:46:16,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:16,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367672500] [2021-10-21 19:46:16,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:16,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:46:16,055 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:46:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:46:16,059 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:46:16,166 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:46:16,166 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:46:16,166 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:46:16,166 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:46:16,166 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:46:16,166 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,167 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:46:16,167 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:46:16,167 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2021-10-21 19:46:16,167 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:46:16,167 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:46:16,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,264 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:46:16,264 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:46:16,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,269 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:16,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:16,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-21 19:46:16,297 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:16,297 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:16,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,330 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-21 19:46:16,334 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:16,334 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:16,357 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:16,357 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:16,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,384 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-21 19:46:16,389 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:16,389 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:16,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:16,397 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:16,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,418 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-21 19:46:16,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:16,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:16,428 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:16,428 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:16,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Ended with exit code 0 [2021-10-21 19:46:16,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,473 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:16,483 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:16,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-21 19:46:16,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:46:16,501 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:46:16,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,534 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:16,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:16,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2021-10-21 19:46:16,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,571 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Waiting until timeout for monitored process [2021-10-21 19:46:16,572 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:46:16,572 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:16,644 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:46:16,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (74)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,646 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:46:16,646 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:46:16,646 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:46:16,646 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:46:16,646 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:46:16,646 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,646 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:46:16,646 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:46:16,646 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration10_Loop [2021-10-21 19:46:16,646 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:46:16,646 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:46:16,647 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,657 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,661 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,673 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:16,723 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:46:16,723 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:46:16,723 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,735 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Waiting until timeout for monitored process [2021-10-21 19:46:16,737 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:16,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:16,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:16,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:16,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:16,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:16,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:16,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:16,759 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:16,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (75)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,778 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,778 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Waiting until timeout for monitored process [2021-10-21 19:46:16,779 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:16,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:16,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:16,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:16,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:16,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:16,787 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:16,787 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:16,788 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:16,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (76)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,807 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,807 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-21 19:46:16,808 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:16,815 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:16,815 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:16,815 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:16,815 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:16,815 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:16,816 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:16,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:16,817 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:16,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Ended with exit code 0 [2021-10-21 19:46:16,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,836 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-21 19:46:16,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:16,845 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:16,845 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:16,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:16,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:16,845 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:16,845 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:16,845 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:16,846 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:16,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,865 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,866 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,867 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:16,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-21 19:46:16,874 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:16,874 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:16,874 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:16,874 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:16,874 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:16,874 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:16,874 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:16,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:16,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Ended with exit code 0 [2021-10-21 19:46:16,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,895 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-21 19:46:16,896 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:16,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:16,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:16,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:16,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:16,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:16,905 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:16,905 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:16,907 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:16,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-10-21 19:46:16,925 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,926 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-21 19:46:16,927 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:16,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:16,934 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:16,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:16,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:16,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:16,935 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:16,935 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:16,936 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:46:16,954 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-21 19:46:16,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,955 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-21 19:46:16,956 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:16,963 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:16,963 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:16,963 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:16,963 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:16,963 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:16,964 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:16,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:16,966 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:46:16,968 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:46:16,968 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:46:16,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:16,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:16,969 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:16,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-21 19:46:16,970 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:46:16,970 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:46:16,970 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:46:16,970 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_#in~n) = 1*fibo2_#in~n Supporting invariants [] [2021-10-21 19:46:16,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:16,989 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:46:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:17,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:17,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:46:17,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:17,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:17,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:17,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:17,575 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-21 19:46:17,576 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:46:17,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1076 states and 1404 transitions. Complement of second has 21 states. [2021-10-21 19:46:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:46:17,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-21 19:46:17,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-21 19:46:17,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:17,706 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:46:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:17,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:46:17,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:18,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:18,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:18,229 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-21 19:46:18,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:46:18,338 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1076 states and 1404 transitions. Complement of second has 21 states. [2021-10-21 19:46:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:46:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 23 transitions. [2021-10-21 19:46:18,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 23 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-21 19:46:18,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:18,340 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:46:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:18,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:46:18,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:18,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:18,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:18,874 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-21 19:46:18,875 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:46:19,030 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 1039 states and 1368 transitions. cyclomatic complexity: 340. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Result 1821 states and 2255 transitions. Complement of second has 25 states. [2021-10-21 19:46:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:19,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 5 states have internal predecessors, (24), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:46:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 42 transitions. [2021-10-21 19:46:19,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 8 letters. [2021-10-21 19:46:19,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:19,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 65 letters. Loop has 8 letters. [2021-10-21 19:46:19,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:19,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 42 transitions. Stem has 57 letters. Loop has 16 letters. [2021-10-21 19:46:19,035 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:19,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1821 states and 2255 transitions. [2021-10-21 19:46:19,056 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 133 [2021-10-21 19:46:19,072 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1821 states to 1322 states and 1717 transitions. [2021-10-21 19:46:19,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 438 [2021-10-21 19:46:19,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 456 [2021-10-21 19:46:19,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1322 states and 1717 transitions. [2021-10-21 19:46:19,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:19,075 INFO L681 BuchiCegarLoop]: Abstraction has 1322 states and 1717 transitions. [2021-10-21 19:46:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states and 1717 transitions. [2021-10-21 19:46:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1090. [2021-10-21 19:46:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 726 states have (on average 1.159779614325069) internal successors, (842), 774 states have internal predecessors, (842), 205 states have call successors, (214), 147 states have call predecessors, (214), 159 states have return successors, (361), 168 states have call predecessors, (361), 202 states have call successors, (361) [2021-10-21 19:46:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1417 transitions. [2021-10-21 19:46:19,114 INFO L704 BuchiCegarLoop]: Abstraction has 1090 states and 1417 transitions. [2021-10-21 19:46:19,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:19,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 19:46:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:46:19,115 INFO L87 Difference]: Start difference. First operand 1090 states and 1417 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 12 states have internal predecessors, (43), 10 states have call successors, (13), 10 states have call predecessors, (13), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-10-21 19:46:19,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:19,482 INFO L93 Difference]: Finished difference Result 552 states and 696 transitions. [2021-10-21 19:46:19,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-21 19:46:19,483 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 552 states and 696 transitions. [2021-10-21 19:46:19,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-21 19:46:19,494 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 552 states to 499 states and 627 transitions. [2021-10-21 19:46:19,494 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 268 [2021-10-21 19:46:19,494 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 268 [2021-10-21 19:46:19,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 499 states and 627 transitions. [2021-10-21 19:46:19,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:19,495 INFO L681 BuchiCegarLoop]: Abstraction has 499 states and 627 transitions. [2021-10-21 19:46:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states and 627 transitions. [2021-10-21 19:46:19,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 483. [2021-10-21 19:46:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 320 states have (on average 1.125) internal successors, (360), 337 states have internal predecessors, (360), 95 states have call successors, (97), 66 states have call predecessors, (97), 68 states have return successors, (149), 79 states have call predecessors, (149), 89 states have call successors, (149) [2021-10-21 19:46:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 606 transitions. [2021-10-21 19:46:19,516 INFO L704 BuchiCegarLoop]: Abstraction has 483 states and 606 transitions. [2021-10-21 19:46:19,516 INFO L587 BuchiCegarLoop]: Abstraction has 483 states and 606 transitions. [2021-10-21 19:46:19,516 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-21 19:46:19,516 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 483 states and 606 transitions. [2021-10-21 19:46:19,519 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-21 19:46:19,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:46:19,519 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:46:19,520 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 7, 7, 6, 6, 5, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:19,520 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:46:19,521 INFO L791 eck$LassoCheckResult]: Stem: 34377#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 34378#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 8; 34410#L39 call main_#t~ret11 := fibo1(main_~x~0);< 34459#fibo1ENTRY ~n := #in~n; 34520#L10 assume !(~n < 1); 34518#L12 assume !(1 == ~n); 34515#L15 call #t~ret7 := fibo2(~n - 1);< 34516#fibo2ENTRY ~n := #in~n; 34538#L20 assume !(~n < 1); 34531#L22 assume !(1 == ~n); 34527#L25 call #t~ret9 := fibo1(~n - 1);< 34528#fibo1ENTRY ~n := #in~n; 34605#L10 assume !(~n < 1); 34604#L12 assume !(1 == ~n); 34595#L15 call #t~ret7 := fibo2(~n - 1);< 34603#fibo2ENTRY ~n := #in~n; 34838#L20 assume !(~n < 1); 34836#L22 assume !(1 == ~n); 34436#L25 call #t~ret9 := fibo1(~n - 1);< 34669#fibo1ENTRY ~n := #in~n; 34435#L10 assume !(~n < 1); 34437#L12 assume !(1 == ~n); 34596#L15 call #t~ret7 := fibo2(~n - 1);< 34638#fibo2ENTRY ~n := #in~n; 34642#L20 assume !(~n < 1); 34641#L22 assume !(1 == ~n); 34427#L25 call #t~ret9 := fibo1(~n - 1);< 34598#fibo1ENTRY ~n := #in~n; 34434#L10 assume !(~n < 1); 34426#L12 assume !(1 == ~n); 34428#L15 call #t~ret7 := fibo2(~n - 1);< 34666#fibo2ENTRY ~n := #in~n; 34674#L20 assume !(~n < 1); 34673#L22 assume 1 == ~n;#res := 1; 34671#fibo2FINAL assume true; 34665#fibo2EXIT >#50#return; 34662#L15-1 call #t~ret8 := fibo2(~n - 2);< 34663#fibo2ENTRY ~n := #in~n; 34845#L20 assume ~n < 1;#res := 0; 34843#fibo2FINAL assume true; 34661#fibo2EXIT >#52#return; 34659#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 34658#fibo1FINAL assume true; 34657#fibo1EXIT >#46#return; 34653#L25-1 call #t~ret10 := fibo1(~n - 2);< 34654#fibo1ENTRY ~n := #in~n; 34667#L10 assume !(~n < 1); 34664#L12 assume 1 == ~n;#res := 1; 34660#fibo1FINAL assume true; 34652#fibo1EXIT >#48#return; 34650#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 34649#fibo2FINAL assume true; 34636#fibo2EXIT >#50#return; 34508#L15-1 call #t~ret8 := fibo2(~n - 2);< 34418#fibo2ENTRY ~n := #in~n; 34578#L20 assume !(~n < 1); 34577#L22 assume !(1 == ~n); 34416#L25 call #t~ret9 := fibo1(~n - 1);< 34506#fibo1ENTRY ~n := #in~n; 34475#L10 assume !(~n < 1); 34476#L12 assume !(1 == ~n); 34505#L15 call #t~ret7 := fibo2(~n - 1);< 34592#fibo2ENTRY ~n := #in~n; 34620#L20 assume !(~n < 1); 34773#L22 assume !(1 == ~n); 34726#L25 call #t~ret9 := fibo1(~n - 1);< 34729#fibo1ENTRY ~n := #in~n; 34805#L10 assume !(~n < 1); 34804#L12 assume !(1 == ~n); 34393#L15 [2021-10-21 19:46:19,521 INFO L793 eck$LassoCheckResult]: Loop: 34393#L15 call #t~ret7 := fibo2(~n - 1);< 34796#fibo2ENTRY ~n := #in~n; 34797#L20 assume !(~n < 1); 34808#L22 assume !(1 == ~n); 34727#L25 call #t~ret9 := fibo1(~n - 1);< 34729#fibo1ENTRY ~n := #in~n; 34805#L10 assume !(~n < 1); 34804#L12 assume !(1 == ~n); 34393#L15 [2021-10-21 19:46:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:19,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1054902100, now seen corresponding path program 2 times [2021-10-21 19:46:19,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:19,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23808292] [2021-10-21 19:46:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:19,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-21 19:46:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-21 19:46:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-21 19:46:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-21 19:46:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 19:46:19,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:46:19,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23808292] [2021-10-21 19:46:19,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23808292] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:19,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785379026] [2021-10-21 19:46:19,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:46:19,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:46:19,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:19,749 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:46:19,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-10-21 19:46:20,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:46:20,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:46:20,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:46:20,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 92 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-21 19:46:20,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785379026] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:46:20,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:46:20,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 20 [2021-10-21 19:46:20,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945890225] [2021-10-21 19:46:20,715 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:46:20,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:20,715 INFO L82 PathProgramCache]: Analyzing trace with hash 519237434, now seen corresponding path program 4 times [2021-10-21 19:46:20,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:46:20,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622464800] [2021-10-21 19:46:20,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:46:20,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:46:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:46:20,724 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:46:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:46:20,726 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:46:20,846 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:46:20,846 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:46:20,846 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:46:20,846 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:46:20,846 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:46:20,846 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:20,846 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:46:20,846 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:46:20,846 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration11_Loop [2021-10-21 19:46:20,846 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:46:20,846 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:46:20,847 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:20,923 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:46:20,924 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:46:20,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:20,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:20,929 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:20,934 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:46:20,934 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:20,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-21 19:46:20,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:21,000 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:21,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:21,001 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:21,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:46:21,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:46:21,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Waiting until timeout for monitored process [2021-10-21 19:46:23,046 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:46:23,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (86)] Ended with exit code 0 [2021-10-21 19:46:23,048 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:46:23,048 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:46:23,049 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:46:23,049 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:46:23,049 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:46:23,049 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:23,049 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:46:23,049 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:46:23,049 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_8-2.c_Iteration11_Loop [2021-10-21 19:46:23,049 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:46:23,049 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:46:23,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,056 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,057 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,064 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:46:23,120 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:46:23,120 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:46:23,120 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:23,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:23,122 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:23,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-21 19:46:23,123 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:46:23,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:46:23,129 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:46:23,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:46:23,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:46:23,130 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:46:23,131 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:46:23,131 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:46:23,132 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:46:23,135 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:46:23,135 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:46:23,135 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:46:23,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:46:23,137 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:46:23,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-21 19:46:23,138 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:46:23,138 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:46:23,139 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:46:23,139 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-21 19:46:23,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:23,159 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:46:23,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:23,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:46:23,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:23,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:24,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:24,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:24,101 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-21 19:46:24,102 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:24,212 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 524 states and 649 transitions. Complement of second has 19 states. [2021-10-21 19:46:24,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 22 transitions. [2021-10-21 19:46:24,214 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 22 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-21 19:46:24,214 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:24,214 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:46:24,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:24,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:46:24,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:24,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:24,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:25,031 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-21 19:46:25,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:25,171 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 530 states and 655 transitions. Complement of second has 27 states. [2021-10-21 19:46:25,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 2 stem states 7 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 25 transitions. [2021-10-21 19:46:25,172 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 25 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-21 19:46:25,173 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:25,173 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:46:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:46:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:25,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-21 19:46:25,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:46:25,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:46:25,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:46:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:46:25,961 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 6 loop predicates [2021-10-21 19:46:25,961 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:26,105 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 483 states and 606 transitions. cyclomatic complexity: 129. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 825 states and 995 transitions. Complement of second has 33 states. [2021-10-21 19:46:26,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-21 19:46:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 43 transitions. [2021-10-21 19:46:26,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 8 letters. [2021-10-21 19:46:26,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:26,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 77 letters. Loop has 8 letters. [2021-10-21 19:46:26,108 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:26,108 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 43 transitions. Stem has 69 letters. Loop has 16 letters. [2021-10-21 19:46:26,109 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:46:26,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 825 states and 995 transitions. [2021-10-21 19:46:26,116 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-21 19:46:26,122 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 825 states to 579 states and 719 transitions. [2021-10-21 19:46:26,122 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 270 [2021-10-21 19:46:26,123 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 314 [2021-10-21 19:46:26,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 579 states and 719 transitions. [2021-10-21 19:46:26,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:46:26,123 INFO L681 BuchiCegarLoop]: Abstraction has 579 states and 719 transitions. [2021-10-21 19:46:26,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states and 719 transitions. [2021-10-21 19:46:26,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 529. [2021-10-21 19:46:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 354 states have (on average 1.1101694915254237) internal successors, (393), 370 states have internal predecessors, (393), 102 states have call successors, (109), 77 states have call predecessors, (109), 73 states have return successors, (154), 81 states have call predecessors, (154), 96 states have call successors, (154) [2021-10-21 19:46:26,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 656 transitions. [2021-10-21 19:46:26,140 INFO L704 BuchiCegarLoop]: Abstraction has 529 states and 656 transitions. [2021-10-21 19:46:26,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:46:26,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 19:46:26,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:46:26,142 INFO L87 Difference]: Start difference. First operand 529 states and 656 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 12 states have internal predecessors, (46), 10 states have call successors, (15), 10 states have call predecessors, (15), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-21 19:46:26,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:46:26,492 INFO L93 Difference]: Finished difference Result 521 states and 613 transitions. [2021-10-21 19:46:26,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:46:26,493 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 521 states and 613 transitions. [2021-10-21 19:46:26,498 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:46:26,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 521 states to 0 states and 0 transitions. [2021-10-21 19:46:26,498 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:46:26,498 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:46:26,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:46:26,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:46:26,499 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:46:26,499 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:46:26,499 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:46:26,499 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-21 19:46:26,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:46:26,499 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:46:26,499 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:46:26,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:46:26 BoogieIcfgContainer [2021-10-21 19:46:26,506 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:46:26,506 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:46:26,506 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:46:26,506 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:46:26,507 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:45:50" (3/4) ... [2021-10-21 19:46:26,510 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:46:26,510 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:46:26,511 INFO L168 Benchmark]: Toolchain (without parser) took 37105.49 ms. Allocated memory was 96.5 MB in the beginning and 425.7 MB in the end (delta: 329.3 MB). Free memory was 54.1 MB in the beginning and 198.8 MB in the end (delta: -144.7 MB). Peak memory consumption was 184.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:26,512 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:46:26,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.84 ms. Allocated memory is still 96.5 MB. Free memory was 53.9 MB in the beginning and 71.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:26,513 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.00 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 69.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:26,513 INFO L168 Benchmark]: Boogie Preprocessor took 16.65 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:46:26,513 INFO L168 Benchmark]: RCFGBuilder took 326.21 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 58.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:26,514 INFO L168 Benchmark]: BuchiAutomizer took 36472.78 ms. Allocated memory was 96.5 MB in the beginning and 425.7 MB in the end (delta: 329.3 MB). Free memory was 58.3 MB in the beginning and 199.8 MB in the end (delta: -141.5 MB). Peak memory consumption was 189.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:26,514 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 425.7 MB. Free memory was 199.8 MB in the beginning and 198.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:46:26,516 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.84 ms. Allocated memory is still 96.5 MB. Free memory was 53.9 MB in the beginning and 71.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.00 ms. Allocated memory is still 96.5 MB. Free memory was 71.3 MB in the beginning and 69.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.65 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 326.21 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 58.3 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 36472.78 ms. Allocated memory was 96.5 MB in the beginning and 425.7 MB in the end (delta: 329.3 MB). Free memory was 58.3 MB in the beginning and 199.8 MB in the end (delta: -141.5 MB). Peak memory consumption was 189.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.22 ms. Allocated memory is still 425.7 MB. Free memory was 199.8 MB in the beginning and 198.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (10 trivial, 2 deterministic, 4 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 12 locations. One nondeterministic module has affine ranking function \old(n) and consists of 8 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 10 modules have a trivial ranking function, the largest among these consists of 20 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 36.4s and 12 iterations. TraceHistogramMax:18. Analysis of lassos took 20.2s. Construction of modules took 2.6s. Büchi inclusion checks took 12.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 15. Automata minimization 616.2ms AutomataMinimizationTime, 15 MinimizatonAttempts, 1197 StatesRemovedByMinimization, 15 NontrivialMinimizations. Non-live state removal took 0.4s Buchi closure took 0.0s. Biggest automaton had 2404 states and ocurred in iteration 8. Nontrivial modules had stage [2, 0, 4, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/6 HoareTripleCheckerStatistics: 531 SDtfs, 1215 SDslu, 1801 SDs, 0 SdLazy, 4129 SolverSat, 718 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2673.0ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI5 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax100 hnf92 lsp93 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq185 hnf93 smp80 dnf100 smp100 tf110 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 37ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:46:26,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:26,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:26,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-21 19:46:27,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-10-21 19:46:27,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:27,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:27,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-10-21 19:46:27,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:28,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:28,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-21 19:46:28,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:28,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:28,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:46:29,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74c09758-afc4-4772-9e0f-b109c9d9dbdb/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...