./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:08:40,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:08:40,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:08:40,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:08:40,202 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:08:40,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:08:40,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:08:40,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:08:40,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:08:40,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:08:40,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:08:40,215 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:08:40,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:08:40,218 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:08:40,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:08:40,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:08:40,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:08:40,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:08:40,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:08:40,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:08:40,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:08:40,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:08:40,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:08:40,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:08:40,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:08:40,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:08:40,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:08:40,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:08:40,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:08:40,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:08:40,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:08:40,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:08:40,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:08:40,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:08:40,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:08:40,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:08:40,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:08:40,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:08:40,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:08:40,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:08:40,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:08:40,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-28 09:08:40,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:08:40,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:08:40,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:08:40,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:08:40,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:08:40,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:08:40,287 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:08:40,287 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-28 09:08:40,288 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-28 09:08:40,288 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-28 09:08:40,288 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-28 09:08:40,288 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-28 09:08:40,289 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-28 09:08:40,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:08:40,289 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:08:40,289 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:08:40,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:08:40,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:08:40,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:08:40,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-28 09:08:40,291 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-28 09:08:40,291 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-28 09:08:40,291 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:08:40,291 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:08:40,292 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-28 09:08:40,292 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:08:40,292 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-28 09:08:40,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:08:40,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:08:40,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:08:40,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:08:40,294 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:08:40,295 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-28 09:08:40,295 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_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2021-10-28 09:08:40,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:08:40,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:08:40,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:08:40,620 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:08:40,622 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:08:40,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2021-10-28 09:08:40,718 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/data/ce9762179/60b4843d877b402d87a66cad0d76a5dc/FLAGb3ccac44e [2021-10-28 09:08:41,192 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:08:41,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2021-10-28 09:08:41,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/data/ce9762179/60b4843d877b402d87a66cad0d76a5dc/FLAGb3ccac44e [2021-10-28 09:08:41,590 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/data/ce9762179/60b4843d877b402d87a66cad0d76a5dc [2021-10-28 09:08:41,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:08:41,595 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:08:41,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:08:41,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:08:41,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:08:41,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cdbc02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41, skipping insertion in model container [2021-10-28 09:08:41,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:08:41,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:08:41,831 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_507f9424-5ef6-445f-a1b7-baaf54de7207/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2021-10-28 09:08:41,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:08:41,844 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:08:41,861 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_507f9424-5ef6-445f-a1b7-baaf54de7207/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c[946,959] [2021-10-28 09:08:41,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:08:41,877 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:08:41,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41 WrapperNode [2021-10-28 09:08:41,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:08:41,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:08:41,880 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:08:41,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:08:41,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:08:41,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:08:41,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:08:41,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:08:41,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:08:41,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:08:41,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:08:41,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:08:41,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (1/1) ... [2021-10-28 09:08:41,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:41,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:41,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:42,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-28 09:08:42,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:08:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2021-10-28 09:08:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2021-10-28 09:08:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:08:42,046 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2021-10-28 09:08:42,046 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2021-10-28 09:08:42,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:08:42,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:08:42,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:08:42,333 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 09:08:42,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:08:42 BoogieIcfgContainer [2021-10-28 09:08:42,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:08:42,350 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-28 09:08:42,350 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-28 09:08:42,354 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-28 09:08:42,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:08:42,355 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.10 09:08:41" (1/3) ... [2021-10-28 09:08:42,358 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fefdea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:08:42, skipping insertion in model container [2021-10-28 09:08:42,358 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:08:42,358 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:08:41" (2/3) ... [2021-10-28 09:08:42,359 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5fefdea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.10 09:08:42, skipping insertion in model container [2021-10-28 09:08:42,359 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-28 09:08:42,359 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:08:42" (3/3) ... [2021-10-28 09:08:42,361 INFO L389 chiAutomizerObserver]: Analyzing ICFG fibo_2calls_5-1.c [2021-10-28 09:08:42,454 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-28 09:08:42,454 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-28 09:08:42,454 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-28 09:08:42,454 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-28 09:08:42,454 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-28 09:08:42,455 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-28 09:08:42,455 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-28 09:08:42,456 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-28 09:08:42,481 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-28 09:08:42,514 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 09:08:42,515 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:42,516 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:42,526 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:08:42,527 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:42,527 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-28 09:08:42,527 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-10-28 09:08:42,531 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 09:08:42,531 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:42,532 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:42,533 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-28 09:08:42,533 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:42,540 INFO L791 eck$LassoCheckResult]: Stem: 16#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 7#L-1true havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 15#L39true call main_#t~ret11 := fibo1(main_~x~0);< 5#fibo1ENTRYtrue [2021-10-28 09:08:42,541 INFO L793 eck$LassoCheckResult]: Loop: 5#fibo1ENTRYtrue ~n := #in~n; 9#L10true assume !(~n < 1); 8#L12true assume !(1 == ~n); 10#L15true call #t~ret7 := fibo2(~n - 1);< 14#fibo2ENTRYtrue ~n := #in~n; 12#L20true assume !(~n < 1); 17#L22true assume !(1 == ~n); 23#L25true call #t~ret9 := fibo1(~n - 1);< 5#fibo1ENTRYtrue [2021-10-28 09:08:42,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:42,549 INFO L85 PathProgramCache]: Analyzing trace with hash 29896, now seen corresponding path program 1 times [2021-10-28 09:08:42,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:42,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554400281] [2021-10-28 09:08:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:42,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:42,690 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:42,749 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash 181289832, now seen corresponding path program 1 times [2021-10-28 09:08:42,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:42,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958694684] [2021-10-28 09:08:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:42,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:42,774 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:42,785 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:42,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1313669423, now seen corresponding path program 1 times [2021-10-28 09:08:42,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:42,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935287657] [2021-10-28 09:08:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:42,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:42,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:42,825 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:42,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:43,079 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:08:43,080 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:08:43,080 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:08:43,080 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:08:43,080 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:08:43,080 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,080 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:08:43,081 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:08:43,081 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2021-10-28 09:08:43,081 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:08:43,081 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:08:43,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,105 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,212 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:08:43,213 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:08:43,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-28 09:08:43,243 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,243 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,270 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:43,271 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:43,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,299 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-28 09:08:43,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,317 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:43,317 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:43,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,339 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,342 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-28 09:08:43,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,348 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,377 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:43,377 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:43,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,412 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-28 09:08:43,417 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,433 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:43,433 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:43,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,460 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-28 09:08:43,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,464 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,474 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:43,474 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:43,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,501 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-28 09:08:43,502 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,502 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,512 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:43,512 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:43,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,537 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-28 09:08:43,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,540 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,569 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:43,569 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:43,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,611 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-28 09:08:43,655 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:43,655 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:43,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,695 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,697 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:43,697 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-28 09:08:43,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-28 09:08:43,731 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:08:43,731 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:43,799 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:08:43,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:43,803 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:08:43,803 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:08:43,803 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:08:43,803 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:08:43,803 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:08:43,803 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,803 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:08:43,803 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:08:43,803 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration1_Loop [2021-10-28 09:08:43,803 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:08:43,803 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:08:43,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,833 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:43,939 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:08:43,944 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:08:43,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:43,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:43,946 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:43,965 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:43,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:43,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:43,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:43,975 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:43,975 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:43,977 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:43,978 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:43,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-28 09:08:44,005 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:44,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:44,073 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,074 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:44,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-28 09:08:44,100 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:44,100 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:44,100 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:44,100 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:44,100 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:44,101 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:44,101 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:44,104 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:44,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-10-28 09:08:44,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,128 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:44,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-28 09:08:44,138 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:44,138 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:44,138 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:44,138 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:44,138 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:44,142 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:44,142 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:44,143 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:44,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:44,166 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,167 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-28 09:08:44,172 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:44,180 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:44,180 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:44,180 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:44,180 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:44,180 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:44,181 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:44,181 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:44,184 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:44,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:44,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,205 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-28 09:08:44,214 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:44,221 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:44,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:44,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:44,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:44,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:44,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:44,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:44,238 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:44,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:44,261 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,262 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-28 09:08:44,265 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:44,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:44,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:44,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:44,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:44,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:44,273 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:44,273 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:44,287 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:44,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:44,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,322 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-28 09:08:44,346 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:44,357 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:44,357 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:44,357 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:44,357 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:44,357 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:44,358 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:44,359 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:44,377 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:44,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:44,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,401 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,421 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:44,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-28 09:08:44,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:44,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:44,430 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:44,430 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:44,430 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:44,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:44,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:44,433 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:44,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:44,455 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,456 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-28 09:08:44,462 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:44,472 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:44,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:44,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:44,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:44,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:44,474 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:44,474 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:44,492 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:08:44,495 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:08:44,495 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:08:44,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:44,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:44,498 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:44,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-28 09:08:44,522 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:08:44,522 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:08:44,522 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:08:44,523 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_#in~n) = 1*fibo1_#in~n Supporting invariants [] [2021-10-28 09:08:44,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-10-28 09:08:44,550 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:08:44,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:44,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:08:44,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:44,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:08:44,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:08:44,870 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-28 09:08:44,872 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:08:45,143 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 26 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5). Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 84 states and 116 transitions. Complement of second has 24 states. [2021-10-28 09:08:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 09:08:45,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:08:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 21 transitions. [2021-10-28 09:08:45,152 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-28 09:08:45,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:45,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-28 09:08:45,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:45,156 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 21 transitions. Stem has 3 letters. Loop has 16 letters. [2021-10-28 09:08:45,156 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:45,157 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 116 transitions. [2021-10-28 09:08:45,178 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 09:08:45,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 61 states and 82 transitions. [2021-10-28 09:08:45,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-28 09:08:45,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2021-10-28 09:08:45,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 82 transitions. [2021-10-28 09:08:45,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:45,203 INFO L681 BuchiCegarLoop]: Abstraction has 61 states and 82 transitions. [2021-10-28 09:08:45,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states and 82 transitions. [2021-10-28 09:08:45,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-28 09:08:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 38 states have internal predecessors, (47), 12 states have call successors, (12), 8 states have call predecessors, (12), 6 states have return successors, (13), 7 states have call predecessors, (13), 10 states have call successors, (13) [2021-10-28 09:08:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2021-10-28 09:08:45,245 INFO L704 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-28 09:08:45,245 INFO L587 BuchiCegarLoop]: Abstraction has 54 states and 72 transitions. [2021-10-28 09:08:45,245 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-28 09:08:45,245 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 54 states and 72 transitions. [2021-10-28 09:08:45,247 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 09:08:45,247 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:45,247 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:45,249 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:45,249 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:45,249 INFO L791 eck$LassoCheckResult]: Stem: 196#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 197#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 214#L39 call main_#t~ret11 := fibo1(main_~x~0);< 213#fibo1ENTRY ~n := #in~n; 215#L10 assume !(~n < 1); 226#L12 assume !(1 == ~n); 208#L15 call #t~ret7 := fibo2(~n - 1);< 230#fibo2ENTRY ~n := #in~n; 236#L20 assume !(~n < 1); 249#L22 assume !(1 == ~n); 204#L25 call #t~ret9 := fibo1(~n - 1);< 216#fibo1ENTRY ~n := #in~n; 217#L10 assume ~n < 1;#res := 0; 205#fibo1FINAL assume true; 206#fibo1EXIT >#46#return; 207#L25-1 [2021-10-28 09:08:45,250 INFO L793 eck$LassoCheckResult]: Loop: 207#L25-1 call #t~ret10 := fibo1(~n - 2);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume !(~n < 1); 241#L12 assume !(1 == ~n); 211#L15 call #t~ret7 := fibo2(~n - 1);< 220#fibo2ENTRY ~n := #in~n; 243#L20 assume !(~n < 1); 242#L22 assume !(1 == ~n); 219#L25 call #t~ret9 := fibo1(~n - 1);< 212#fibo1ENTRY ~n := #in~n; 240#L10 assume ~n < 1;#res := 0; 238#fibo1FINAL assume true; 239#fibo1EXIT >#46#return; 207#L25-1 [2021-10-28 09:08:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1888024054, now seen corresponding path program 1 times [2021-10-28 09:08:45,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:45,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28438409] [2021-10-28 09:08:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:45,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 09:08:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:08:45,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:45,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28438409] [2021-10-28 09:08:45,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28438409] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:45,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:45,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:08:45,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560054146] [2021-10-28 09:08:45,357 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:08:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:45,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1730504828, now seen corresponding path program 1 times [2021-10-28 09:08:45,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:45,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537436320] [2021-10-28 09:08:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:45,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:45,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:08:45,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:45,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537436320] [2021-10-28 09:08:45,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537436320] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:08:45,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:08:45,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:08:45,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205334081] [2021-10-28 09:08:45,412 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:08:45,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:45,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:08:45,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:08:45,417 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. cyclomatic complexity: 20 Second operand has 6 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:08:45,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:45,491 INFO L93 Difference]: Finished difference Result 68 states and 88 transitions. [2021-10-28 09:08:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:08:45,492 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 88 transitions. [2021-10-28 09:08:45,501 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 09:08:45,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 66 states and 86 transitions. [2021-10-28 09:08:45,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 46 [2021-10-28 09:08:45,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 46 [2021-10-28 09:08:45,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 86 transitions. [2021-10-28 09:08:45,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:45,509 INFO L681 BuchiCegarLoop]: Abstraction has 66 states and 86 transitions. [2021-10-28 09:08:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states and 86 transitions. [2021-10-28 09:08:45,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-10-28 09:08:45,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 38 states have (on average 1.263157894736842) internal successors, (48), 42 states have internal predecessors, (48), 12 states have call successors, (12), 8 states have call predecessors, (12), 8 states have return successors, (16), 7 states have call predecessors, (16), 10 states have call successors, (16) [2021-10-28 09:08:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2021-10-28 09:08:45,531 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-28 09:08:45,531 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 76 transitions. [2021-10-28 09:08:45,532 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-28 09:08:45,532 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 76 transitions. [2021-10-28 09:08:45,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-28 09:08:45,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:45,536 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:45,537 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:45,537 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:45,538 INFO L791 eck$LassoCheckResult]: Stem: 341#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 342#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 360#L39 call main_#t~ret11 := fibo1(main_~x~0);< 359#fibo1ENTRY ~n := #in~n; 361#L10 assume !(~n < 1); 371#L12 assume !(1 == ~n); 354#L15 call #t~ret7 := fibo2(~n - 1);< 378#fibo2ENTRY ~n := #in~n; 382#L20 assume !(~n < 1); 398#L22 assume !(1 == ~n); 349#L25 call #t~ret9 := fibo1(~n - 1);< 362#fibo1ENTRY ~n := #in~n; 363#L10 assume !(~n < 1); 387#L12 assume 1 == ~n;#res := 1; 386#fibo1FINAL assume true; 385#fibo1EXIT >#46#return; 351#L25-1 [2021-10-28 09:08:45,538 INFO L793 eck$LassoCheckResult]: Loop: 351#L25-1 call #t~ret10 := fibo1(~n - 2);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume !(1 == ~n); 357#L15 call #t~ret7 := fibo2(~n - 1);< 391#fibo2ENTRY ~n := #in~n; 390#L20 assume !(~n < 1); 388#L22 assume !(1 == ~n); 352#L25 call #t~ret9 := fibo1(~n - 1);< 358#fibo1ENTRY ~n := #in~n; 375#L10 assume !(~n < 1); 369#L12 assume 1 == ~n;#res := 1; 370#fibo1FINAL assume true; 384#fibo1EXIT >#46#return; 351#L25-1 [2021-10-28 09:08:45,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:45,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1600771562, now seen corresponding path program 1 times [2021-10-28 09:08:45,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:45,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526615037] [2021-10-28 09:08:45,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:45,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 09:08:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:08:45,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:45,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526615037] [2021-10-28 09:08:45,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526615037] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:45,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504350703] [2021-10-28 09:08:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:45,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:45,713 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:45,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:08:45,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:45,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:08:45,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:08:45,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504350703] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:45,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:45,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-10-28 09:08:45,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297565554] [2021-10-28 09:08:45,900 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:08:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:45,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2106067024, now seen corresponding path program 1 times [2021-10-28 09:08:45,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:45,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523946198] [2021-10-28 09:08:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:45,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:45,921 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:45,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:46,258 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:08:46,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:08:46,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:08:46,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:08:46,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:08:46,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:46,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:08:46,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:08:46,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2021-10-28 09:08:46,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:08:46,260 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:08:46,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:46,357 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:08:46,357 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:08:46,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:46,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:46,359 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:46,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:46,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:46,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-28 09:08:46,397 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:46,398 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=0} Honda state: {fibo1_#t~ret7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:46,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:46,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:46,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:46,430 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:46,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-28 09:08:46,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:46,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:46,439 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:46,439 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:46,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:46,459 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:46,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:46,459 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:46,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-28 09:08:46,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:46,461 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:46,511 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:46,511 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#in~n=0} Honda state: {fibo1_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:46,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-10-28 09:08:46,557 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:46,558 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:46,570 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:46,570 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:46,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-28 09:08:46,601 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:46,601 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_~n=0} Honda state: {fibo1_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:46,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:46,649 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:46,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:46,650 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:46,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:46,652 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:46,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-28 09:08:46,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2021-10-28 09:08:46,686 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:46,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:46,687 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:46,688 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:08:46,688 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:46,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-28 09:08:47,829 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:08:47,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-28 09:08:47,832 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:08:47,833 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:08:47,833 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:08:47,833 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:08:47,833 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:08:47,833 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:47,833 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:08:47,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:08:47,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration3_Loop [2021-10-28 09:08:47,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:08:47,833 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:08:47,834 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,859 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:47,915 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:08:47,916 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:08:47,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:47,917 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:47,926 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:47,935 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:47,935 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:47,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:47,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:47,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:47,936 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:47,936 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:47,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-28 09:08:47,953 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:47,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-10-28 09:08:47,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:47,978 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:47,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-28 09:08:47,979 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:47,986 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:47,986 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:47,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:47,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:47,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:47,987 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:47,987 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:47,992 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:48,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-28 09:08:48,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:48,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:48,024 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:48,035 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:48,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:48,045 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:48,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:48,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:48,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:48,046 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:48,046 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:48,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-28 09:08:48,057 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:48,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:48,091 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:48,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:48,093 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:48,096 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:48,105 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:48,105 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:48,105 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:48,105 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:48,106 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:48,107 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:48,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:48,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-28 09:08:48,110 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:08:48,113 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:08:48,113 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:08:48,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:48,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:48,114 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:48,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-28 09:08:48,115 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:08:48,115 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:08:48,115 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:08:48,115 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo2_~n) = 1*fibo2_~n Supporting invariants [] [2021-10-28 09:08:48,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:48,137 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:08:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:48,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:08:48,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:48,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:48,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:08:48,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:48,543 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:08:48,544 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 8 loop predicates [2021-10-28 09:08:48,544 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20 Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:08:48,952 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 76 transitions. cyclomatic complexity: 20. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Result 191 states and 263 transitions. Complement of second has 40 states. [2021-10-28 09:08:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 2 stem states 9 non-accepting loop states 1 accepting loop states [2021-10-28 09:08:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 6 states have internal predecessors, (22), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 09:08:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 73 transitions. [2021-10-28 09:08:48,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 14 letters. [2021-10-28 09:08:48,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:48,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 30 letters. Loop has 14 letters. [2021-10-28 09:08:48,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:48,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 73 transitions. Stem has 16 letters. Loop has 28 letters. [2021-10-28 09:08:48,957 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:48,957 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 263 transitions. [2021-10-28 09:08:48,964 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 09:08:48,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 169 states and 237 transitions. [2021-10-28 09:08:48,970 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 103 [2021-10-28 09:08:48,970 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 106 [2021-10-28 09:08:48,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 169 states and 237 transitions. [2021-10-28 09:08:48,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:48,971 INFO L681 BuchiCegarLoop]: Abstraction has 169 states and 237 transitions. [2021-10-28 09:08:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states and 237 transitions. [2021-10-28 09:08:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 152. [2021-10-28 09:08:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 102 states have internal predecessors, (122), 35 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (48), 30 states have call predecessors, (48), 33 states have call successors, (48) [2021-10-28 09:08:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 206 transitions. [2021-10-28 09:08:48,989 INFO L704 BuchiCegarLoop]: Abstraction has 152 states and 206 transitions. [2021-10-28 09:08:48,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:08:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:08:48,990 INFO L87 Difference]: Start difference. First operand 152 states and 206 transitions. Second operand has 10 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-28 09:08:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:49,112 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2021-10-28 09:08:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:08:49,117 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 183 states and 244 transitions. [2021-10-28 09:08:49,127 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 09:08:49,137 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 183 states to 180 states and 240 transitions. [2021-10-28 09:08:49,137 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 117 [2021-10-28 09:08:49,139 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 117 [2021-10-28 09:08:49,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 180 states and 240 transitions. [2021-10-28 09:08:49,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:49,140 INFO L681 BuchiCegarLoop]: Abstraction has 180 states and 240 transitions. [2021-10-28 09:08:49,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states and 240 transitions. [2021-10-28 09:08:49,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 167. [2021-10-28 09:08:49,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 113 states have internal predecessors, (130), 38 states have call successors, (40), 20 states have call predecessors, (40), 26 states have return successors, (55), 33 states have call predecessors, (55), 36 states have call successors, (55) [2021-10-28 09:08:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2021-10-28 09:08:49,172 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-28 09:08:49,172 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 225 transitions. [2021-10-28 09:08:49,172 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-28 09:08:49,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 225 transitions. [2021-10-28 09:08:49,177 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 09:08:49,178 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:49,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:49,186 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 09:08:49,187 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:08:49,188 INFO L791 eck$LassoCheckResult]: Stem: 1156#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1157#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 1185#L39 call main_#t~ret11 := fibo1(main_~x~0);< 1219#fibo1ENTRY ~n := #in~n; 1207#L10 assume !(~n < 1); 1202#L12 assume !(1 == ~n); 1165#L15 call #t~ret7 := fibo2(~n - 1);< 1208#fibo2ENTRY ~n := #in~n; 1215#L20 assume !(~n < 1); 1164#L22 assume !(1 == ~n); 1166#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume !(~n < 1); 1247#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1250#L10 assume !(~n < 1); 1249#L12 assume !(1 == ~n); 1188#L15 call #t~ret7 := fibo2(~n - 1);< 1248#fibo2ENTRY ~n := #in~n; 1246#L20 assume ~n < 1;#res := 0; 1204#fibo2FINAL assume true; 1205#fibo2EXIT >#50#return; 1187#L15-1 call #t~ret8 := fibo2(~n - 2);< 1191#fibo2ENTRY ~n := #in~n; 1315#L20 assume !(~n < 1); 1314#L22 assume !(1 == ~n); 1186#L25 call #t~ret9 := fibo1(~n - 1);< 1189#fibo1ENTRY ~n := #in~n; 1251#L10 assume !(~n < 1); 1255#L12 assume 1 == ~n;#res := 1; 1256#fibo1FINAL assume true; 1245#fibo1EXIT >#46#return; 1236#L25-1 call #t~ret10 := fibo1(~n - 2);< 1178#fibo1ENTRY ~n := #in~n; 1241#L10 assume !(~n < 1); 1240#L12 assume !(1 == ~n); 1177#L15 call #t~ret7 := fibo2(~n - 1);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume ~n < 1;#res := 0; 1232#fibo2FINAL assume true; 1239#fibo2EXIT >#50#return; 1176#L15-1 call #t~ret8 := fibo2(~n - 2);< 1233#fibo2ENTRY ~n := #in~n; 1231#L20 assume !(~n < 1); 1227#L22 assume 1 == ~n;#res := 1; 1228#fibo2FINAL assume true; 1304#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-28 09:08:49,188 INFO L793 eck$LassoCheckResult]: Loop: 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume !(~n < 1); 1158#L22 assume !(1 == ~n); 1163#L25 call #t~ret9 := fibo1(~n - 1);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#46#return; 1180#L25-1 call #t~ret10 := fibo1(~n - 2);< 1174#fibo1ENTRY ~n := #in~n; 1182#L10 assume !(~n < 1); 1200#L12 assume !(1 == ~n); 1160#L15 call #t~ret7 := fibo2(~n - 1);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#50#return; 1159#L15-1 call #t~ret8 := fibo2(~n - 2);< 1190#fibo2ENTRY ~n := #in~n; 1216#L20 assume ~n < 1;#res := 0; 1162#fibo2FINAL assume true; 1308#fibo2EXIT >#52#return; 1305#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 1317#fibo1FINAL assume true; 1316#fibo1EXIT >#48#return; 1181#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 1309#fibo2FINAL assume true; 1307#fibo2EXIT >#50#return; 1159#L15-1 [2021-10-28 09:08:49,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:49,189 INFO L85 PathProgramCache]: Analyzing trace with hash 376035563, now seen corresponding path program 1 times [2021-10-28 09:08:49,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:49,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630338205] [2021-10-28 09:08:49,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:49,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 09:08:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-28 09:08:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-28 09:08:49,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:49,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630338205] [2021-10-28 09:08:49,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630338205] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:49,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24689036] [2021-10-28 09:08:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:49,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:49,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:49,606 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:49,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 09:08:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:49,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:08:49,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:49,979 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 30 proven. 79 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-10-28 09:08:49,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24689036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:49,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:49,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 21 [2021-10-28 09:08:49,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225837981] [2021-10-28 09:08:49,981 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:08:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash 36254641, now seen corresponding path program 1 times [2021-10-28 09:08:49,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:49,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871506805] [2021-10-28 09:08:49,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:49,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:08:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-28 09:08:50,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:50,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871506805] [2021-10-28 09:08:50,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871506805] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:50,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023984230] [2021-10-28 09:08:50,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:50,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:50,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:50,097 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:50,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 09:08:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:08:50,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 09:08:50,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023984230] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:50,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:50,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 12 [2021-10-28 09:08:50,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429240382] [2021-10-28 09:08:50,377 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:08:50,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:50,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:08:50,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:08:50,378 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. cyclomatic complexity: 63 Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 7 states have call successors, (11), 1 states have call predecessors, (11), 5 states have return successors, (13), 5 states have call predecessors, (13), 7 states have call successors, (13) [2021-10-28 09:08:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:50,596 INFO L93 Difference]: Finished difference Result 223 states and 293 transitions. [2021-10-28 09:08:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:08:50,597 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 223 states and 293 transitions. [2021-10-28 09:08:50,601 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 09:08:50,607 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 223 states to 200 states and 262 transitions. [2021-10-28 09:08:50,607 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 134 [2021-10-28 09:08:50,608 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 134 [2021-10-28 09:08:50,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 200 states and 262 transitions. [2021-10-28 09:08:50,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:50,609 INFO L681 BuchiCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-10-28 09:08:50,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states and 262 transitions. [2021-10-28 09:08:50,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 184. [2021-10-28 09:08:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 115 states have (on average 1.182608695652174) internal successors, (136), 125 states have internal predecessors, (136), 38 states have call successors, (39), 24 states have call predecessors, (39), 31 states have return successors, (63), 34 states have call predecessors, (63), 36 states have call successors, (63) [2021-10-28 09:08:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2021-10-28 09:08:50,642 INFO L704 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-28 09:08:50,642 INFO L587 BuchiCegarLoop]: Abstraction has 184 states and 238 transitions. [2021-10-28 09:08:50,642 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-28 09:08:50,642 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 184 states and 238 transitions. [2021-10-28 09:08:50,644 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-28 09:08:50,644 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:50,644 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:50,646 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:50,646 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:08:50,646 INFO L791 eck$LassoCheckResult]: Stem: 2267#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2268#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2301#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2335#fibo1ENTRY ~n := #in~n; 2323#L10 assume !(~n < 1); 2316#L12 assume !(1 == ~n); 2317#L15 call #t~ret7 := fibo2(~n - 1);< 2326#fibo2ENTRY ~n := #in~n; 2411#L20 assume !(~n < 1); 2410#L22 assume !(1 == ~n); 2310#L25 call #t~ret9 := fibo1(~n - 1);< 2349#fibo1ENTRY ~n := #in~n; 2347#L10 assume !(~n < 1); 2346#L12 assume !(1 == ~n); 2288#L15 call #t~ret7 := fibo2(~n - 1);< 2340#fibo2ENTRY ~n := #in~n; 2369#L20 assume !(~n < 1); 2367#L22 assume !(1 == ~n); 2278#L25 call #t~ret9 := fibo1(~n - 1);< 2349#fibo1ENTRY ~n := #in~n; 2350#L10 assume !(~n < 1); 2378#L12 assume 1 == ~n;#res := 1; 2379#fibo1FINAL assume true; 2441#fibo1EXIT >#46#return; 2287#L25-1 call #t~ret10 := fibo1(~n - 2);< 2289#fibo1ENTRY ~n := #in~n; 2321#L10 assume ~n < 1;#res := 0; 2322#fibo1FINAL assume true; 2450#fibo1EXIT >#48#return; 2293#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2417#fibo2FINAL assume true; 2386#fibo2EXIT >#50#return; 2387#L15-1 [2021-10-28 09:08:50,647 INFO L793 eck$LassoCheckResult]: Loop: 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume !(1 == ~n); 2393#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume !(1 == ~n); 2393#L25 call #t~ret9 := fibo1(~n - 1);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume 1 == ~n;#res := 1; 2415#fibo2FINAL assume true; 2395#fibo2EXIT >#50#return; 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume ~n < 1;#res := 0; 2412#fibo2FINAL assume true; 2409#fibo2EXIT >#52#return; 2388#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2408#fibo1FINAL assume true; 2400#fibo1EXIT >#46#return; 2391#L25-1 call #t~ret10 := fibo1(~n - 2);< 2405#fibo1ENTRY ~n := #in~n; 2406#L10 assume !(~n < 1); 2398#L12 assume !(1 == ~n); 2390#L15 call #t~ret7 := fibo2(~n - 1);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume !(~n < 1); 2414#L22 assume 1 == ~n;#res := 1; 2415#fibo2FINAL assume true; 2395#fibo2EXIT >#50#return; 2387#L15-1 call #t~ret8 := fibo2(~n - 2);< 2309#fibo2ENTRY ~n := #in~n; 2413#L20 assume ~n < 1;#res := 0; 2412#fibo2FINAL assume true; 2409#fibo2EXIT >#52#return; 2388#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 2408#fibo1FINAL assume true; 2400#fibo1EXIT >#48#return; 2397#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2394#fibo2FINAL assume true; 2389#fibo2EXIT >#50#return; 2387#L15-1 [2021-10-28 09:08:50,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:50,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 1 times [2021-10-28 09:08:50,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:50,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978932774] [2021-10-28 09:08:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:50,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:50,658 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:50,674 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1445694181, now seen corresponding path program 1 times [2021-10-28 09:08:50,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:50,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570552567] [2021-10-28 09:08:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:50,676 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:08:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,841 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-10-28 09:08:50,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:50,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570552567] [2021-10-28 09:08:50,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570552567] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:50,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612823838] [2021-10-28 09:08:50,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:50,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:50,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:50,846 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:50,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 09:08:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:50,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:08:50,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 20 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-10-28 09:08:51,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612823838] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:51,158 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:51,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-10-28 09:08:51,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992316062] [2021-10-28 09:08:51,159 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:08:51,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:51,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:08:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:08:51,161 INFO L87 Difference]: Start difference. First operand 184 states and 238 transitions. cyclomatic complexity: 59 Second operand has 16 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (12), 1 states have call predecessors, (12), 6 states have return successors, (11), 6 states have call predecessors, (11), 9 states have call successors, (11) [2021-10-28 09:08:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:51,467 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2021-10-28 09:08:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:08:51,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 154 transitions. [2021-10-28 09:08:51,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:08:51,472 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 101 states and 126 transitions. [2021-10-28 09:08:51,472 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 86 [2021-10-28 09:08:51,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2021-10-28 09:08:51,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 126 transitions. [2021-10-28 09:08:51,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:51,473 INFO L681 BuchiCegarLoop]: Abstraction has 101 states and 126 transitions. [2021-10-28 09:08:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 126 transitions. [2021-10-28 09:08:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 98. [2021-10-28 09:08:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.125) internal successors, (72), 66 states have internal predecessors, (72), 18 states have call successors, (18), 14 states have call predecessors, (18), 16 states have return successors, (32), 17 states have call predecessors, (32), 16 states have call successors, (32) [2021-10-28 09:08:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 122 transitions. [2021-10-28 09:08:51,479 INFO L704 BuchiCegarLoop]: Abstraction has 98 states and 122 transitions. [2021-10-28 09:08:51,479 INFO L587 BuchiCegarLoop]: Abstraction has 98 states and 122 transitions. [2021-10-28 09:08:51,479 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-28 09:08:51,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 98 states and 122 transitions. [2021-10-28 09:08:51,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-28 09:08:51,480 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:51,480 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:51,482 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:51,482 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:51,482 INFO L791 eck$LassoCheckResult]: Stem: 2856#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 2857#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 2880#L39 call main_#t~ret11 := fibo1(main_~x~0);< 2906#fibo1ENTRY ~n := #in~n; 2891#L10 assume !(~n < 1); 2888#L12 assume !(1 == ~n); 2862#L15 call #t~ret7 := fibo2(~n - 1);< 2895#fibo2ENTRY ~n := #in~n; 2935#L20 assume !(~n < 1); 2861#L22 assume !(1 == ~n); 2863#L25 call #t~ret9 := fibo1(~n - 1);< 2877#fibo1ENTRY ~n := #in~n; 2878#L10 assume !(~n < 1); 2929#L12 assume !(1 == ~n); 2900#L15 call #t~ret7 := fibo2(~n - 1);< 2903#fibo2ENTRY ~n := #in~n; 2899#L20 assume !(~n < 1); 2901#L22 assume !(1 == ~n); 2874#L25 call #t~ret9 := fibo1(~n - 1);< 2877#fibo1ENTRY ~n := #in~n; 2879#L10 assume !(~n < 1); 2911#L12 assume 1 == ~n;#res := 1; 2912#fibo1FINAL assume true; 2873#fibo1EXIT >#46#return; 2865#L25-1 call #t~ret10 := fibo1(~n - 2);< 2945#fibo1ENTRY ~n := #in~n; 2890#L10 assume ~n < 1;#res := 0; 2864#fibo1FINAL assume true; 2867#fibo1EXIT >#48#return; 2930#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2927#fibo2FINAL assume true; 2925#fibo2EXIT >#50#return; 2871#L15-1 [2021-10-28 09:08:51,482 INFO L793 eck$LassoCheckResult]: Loop: 2871#L15-1 call #t~ret8 := fibo2(~n - 2);< 2883#fibo2ENTRY ~n := #in~n; 2942#L20 assume !(~n < 1); 2907#L22 assume !(1 == ~n); 2884#L25 call #t~ret9 := fibo1(~n - 1);< 2885#fibo1ENTRY ~n := #in~n; 2916#L10 assume !(~n < 1); 2914#L12 assume !(1 == ~n); 2870#L15 call #t~ret7 := fibo2(~n - 1);< 2894#fibo2ENTRY ~n := #in~n; 2902#L20 assume !(~n < 1); 2907#L22 assume !(1 == ~n); 2884#L25 call #t~ret9 := fibo1(~n - 1);< 2885#fibo1ENTRY ~n := #in~n; 2916#L10 assume !(~n < 1); 2914#L12 assume 1 == ~n;#res := 1; 2915#fibo1FINAL assume true; 2943#fibo1EXIT >#46#return; 2868#L25-1 call #t~ret10 := fibo1(~n - 2);< 2872#fibo1ENTRY ~n := #in~n; 2946#L10 assume ~n < 1;#res := 0; 2917#fibo1FINAL assume true; 2932#fibo1EXIT >#48#return; 2934#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 2936#fibo2FINAL assume true; 2924#fibo2EXIT >#50#return; 2871#L15-1 [2021-10-28 09:08:51,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:51,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1036448488, now seen corresponding path program 2 times [2021-10-28 09:08:51,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:51,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879976329] [2021-10-28 09:08:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:51,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:51,493 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:51,505 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:51,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1626884941, now seen corresponding path program 1 times [2021-10-28 09:08:51,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:51,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29563579] [2021-10-28 09:08:51,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:51,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:51,513 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:51,523 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:51,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:51,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1388651660, now seen corresponding path program 1 times [2021-10-28 09:08:51,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:51,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11423595] [2021-10-28 09:08:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:51,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-10-28 09:08:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:51,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:51,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:51,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-10-28 09:08:51,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:51,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:51,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:51,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 25 proven. 37 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-10-28 09:08:51,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:51,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11423595] [2021-10-28 09:08:51,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11423595] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:51,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806967588] [2021-10-28 09:08:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:51,668 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:51,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:51,669 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:51,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 09:08:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:51,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:08:51,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:51,989 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 09:08:51,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806967588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:51,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:51,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 14 [2021-10-28 09:08:51,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439335412] [2021-10-28 09:08:52,283 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:08:52,283 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:08:52,284 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:08:52,284 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:08:52,284 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:08:52,284 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:52,284 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:08:52,284 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:08:52,284 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2021-10-28 09:08:52,284 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:08:52,284 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:08:52,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:52,348 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:08:52,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:08:52,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:52,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:52,354 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:52,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:52,357 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:52,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-28 09:08:52,376 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:52,376 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:52,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:52,410 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:52,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:52,413 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:52,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:52,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:52,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-28 09:08:52,435 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:52,435 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret7=1} Honda state: {fibo1_#t~ret7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:52,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:52,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:52,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:52,474 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:52,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-28 09:08:52,480 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:52,480 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:52,505 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:52,505 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:52,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:52,542 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:52,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:52,543 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:52,545 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:52,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:52,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-28 09:08:52,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:52,563 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:52,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-28 09:08:52,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:52,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:52,585 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:52,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-28 09:08:52,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:52,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:52,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:52,655 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:52,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:52,655 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:52,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-28 09:08:52,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:08:52,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:53,998 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:08:54,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:54,003 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:08:54,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:08:54,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:08:54,004 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:08:54,004 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:08:54,004 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:54,004 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:08:54,004 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:08:54,004 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration6_Loop [2021-10-28 09:08:54,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:08:54,004 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:08:54,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:54,083 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:08:54,083 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:08:54,083 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:54,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:54,085 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:54,097 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:54,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:54,106 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:54,106 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:54,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:54,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:54,107 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:54,107 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:54,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-28 09:08:54,117 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:54,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-10-28 09:08:54,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:54,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:54,145 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:54,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-28 09:08:54,146 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:54,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:54,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:54,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:54,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:54,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:54,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:54,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:54,155 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:54,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:54,177 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:54,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:54,178 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:54,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-28 09:08:54,179 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:54,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:54,186 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:54,186 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:54,186 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:54,186 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:54,186 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:54,187 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:54,215 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:54,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:54,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:54,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:54,240 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:54,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-28 09:08:54,254 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:54,261 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:54,261 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:54,261 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:54,261 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:54,261 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:54,262 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:54,262 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:54,272 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:08:54,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-28 09:08:54,296 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:54,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:54,297 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:54,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-28 09:08:54,298 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:08:54,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:08:54,305 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:08:54,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:08:54,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:08:54,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:08:54,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:08:54,307 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:08:54,323 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:08:54,337 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:08:54,337 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:08:54,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:54,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:54,342 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:54,345 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:08:54,345 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:08:54,345 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:08:54,346 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-28 09:08:54,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-28 09:08:54,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:54,379 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:08:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:54,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:54,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:08:54,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:54,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:08:54,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 09:08:55,110 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2021-10-28 09:08:55,111 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 98 states and 122 transitions. cyclomatic complexity: 26 Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:08:55,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:55,554 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 98 states and 122 transitions. cyclomatic complexity: 26. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Result 330 states and 436 transitions. Complement of second has 46 states. [2021-10-28 09:08:55,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 13 states 2 stem states 10 non-accepting loop states 1 accepting loop states [2021-10-28 09:08:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 9 states have internal predecessors, (36), 7 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2021-10-28 09:08:55,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 70 transitions. [2021-10-28 09:08:55,555 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 26 letters. [2021-10-28 09:08:55,557 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:55,557 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 58 letters. Loop has 26 letters. [2021-10-28 09:08:55,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:55,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 13 states and 70 transitions. Stem has 32 letters. Loop has 52 letters. [2021-10-28 09:08:55,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:08:55,560 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 330 states and 436 transitions. [2021-10-28 09:08:55,566 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 29 [2021-10-28 09:08:55,571 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 330 states to 287 states and 389 transitions. [2021-10-28 09:08:55,571 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-10-28 09:08:55,572 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 190 [2021-10-28 09:08:55,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 287 states and 389 transitions. [2021-10-28 09:08:55,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:55,574 INFO L681 BuchiCegarLoop]: Abstraction has 287 states and 389 transitions. [2021-10-28 09:08:55,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states and 389 transitions. [2021-10-28 09:08:55,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 261. [2021-10-28 09:08:55,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 163 states have (on average 1.1533742331288344) internal successors, (188), 170 states have internal predecessors, (188), 53 states have call successors, (54), 35 states have call predecessors, (54), 45 states have return successors, (109), 55 states have call predecessors, (109), 51 states have call successors, (109) [2021-10-28 09:08:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2021-10-28 09:08:55,588 INFO L704 BuchiCegarLoop]: Abstraction has 261 states and 351 transitions. [2021-10-28 09:08:55,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:08:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:08:55,589 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 9 states have internal predecessors, (39), 7 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-10-28 09:08:55,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:55,770 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2021-10-28 09:08:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:08:55,770 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 146 transitions. [2021-10-28 09:08:55,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 09:08:55,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 119 states and 141 transitions. [2021-10-28 09:08:55,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-10-28 09:08:55,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 104 [2021-10-28 09:08:55,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 141 transitions. [2021-10-28 09:08:55,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:55,776 INFO L681 BuchiCegarLoop]: Abstraction has 119 states and 141 transitions. [2021-10-28 09:08:55,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 141 transitions. [2021-10-28 09:08:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 113. [2021-10-28 09:08:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 77 states have internal predecessors, (83), 19 states have call successors, (19), 15 states have call predecessors, (19), 20 states have return successors, (33), 20 states have call predecessors, (33), 17 states have call successors, (33) [2021-10-28 09:08:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 135 transitions. [2021-10-28 09:08:55,781 INFO L704 BuchiCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-10-28 09:08:55,781 INFO L587 BuchiCegarLoop]: Abstraction has 113 states and 135 transitions. [2021-10-28 09:08:55,781 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-28 09:08:55,781 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 113 states and 135 transitions. [2021-10-28 09:08:55,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-28 09:08:55,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:55,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:55,785 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:55,785 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:55,785 INFO L791 eck$LassoCheckResult]: Stem: 4188#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4189#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4208#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4232#fibo1ENTRY ~n := #in~n; 4237#L10 assume !(~n < 1); 4244#L12 assume !(1 == ~n); 4218#L15 call #t~ret7 := fibo2(~n - 1);< 4243#fibo2ENTRY ~n := #in~n; 4271#L20 assume !(~n < 1); 4269#L22 assume !(1 == ~n); 4205#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4206#L10 assume !(~n < 1); 4220#L12 assume !(1 == ~n); 4194#L15 call #t~ret7 := fibo2(~n - 1);< 4225#fibo2ENTRY ~n := #in~n; 4227#L20 assume !(~n < 1); 4193#L22 assume !(1 == ~n); 4195#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4206#L10 assume !(~n < 1); 4220#L12 assume !(1 == ~n); 4194#L15 call #t~ret7 := fibo2(~n - 1);< 4225#fibo2ENTRY ~n := #in~n; 4227#L20 assume !(~n < 1); 4193#L22 assume !(1 == ~n); 4195#L25 call #t~ret9 := fibo1(~n - 1);< 4204#fibo1ENTRY ~n := #in~n; 4207#L10 assume !(~n < 1); 4238#L12 assume 1 == ~n;#res := 1; 4239#fibo1FINAL assume true; 4276#fibo1EXIT >#46#return; 4273#L25-1 call #t~ret10 := fibo1(~n - 2);< 4274#fibo1ENTRY ~n := #in~n; 4277#L10 assume ~n < 1;#res := 0; 4275#fibo1FINAL assume true; 4272#fibo1EXIT >#48#return; 4270#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4268#fibo2FINAL assume true; 4265#fibo2EXIT >#50#return; 4191#L15-1 call #t~ret8 := fibo2(~n - 2);< 4229#fibo2ENTRY ~n := #in~n; 4226#L20 assume ~n < 1;#res := 0; 4192#fibo2FINAL assume true; 4221#fibo2EXIT >#52#return; 4260#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4256#fibo1FINAL assume true; 4253#fibo1EXIT >#46#return; 4211#L25-1 [2021-10-28 09:08:55,785 INFO L793 eck$LassoCheckResult]: Loop: 4211#L25-1 call #t~ret10 := fibo1(~n - 2);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume !(1 == ~n); 4215#L15 call #t~ret7 := fibo2(~n - 1);< 4236#fibo2ENTRY ~n := #in~n; 4235#L20 assume !(~n < 1); 4233#L22 assume !(1 == ~n); 4213#L25 call #t~ret9 := fibo1(~n - 1);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume !(1 == ~n); 4215#L15 call #t~ret7 := fibo2(~n - 1);< 4236#fibo2ENTRY ~n := #in~n; 4235#L20 assume !(~n < 1); 4233#L22 assume !(1 == ~n); 4213#L25 call #t~ret9 := fibo1(~n - 1);< 4217#fibo1ENTRY ~n := #in~n; 4245#L10 assume !(~n < 1); 4240#L12 assume 1 == ~n;#res := 1; 4241#fibo1FINAL assume true; 4267#fibo1EXIT >#46#return; 4202#L25-1 call #t~ret10 := fibo1(~n - 2);< 4201#fibo1ENTRY ~n := #in~n; 4203#L10 assume ~n < 1;#res := 0; 4246#fibo1FINAL assume true; 4300#fibo1EXIT >#48#return; 4266#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4264#fibo2FINAL assume true; 4263#fibo2EXIT >#50#return; 4258#L15-1 call #t~ret8 := fibo2(~n - 2);< 4259#fibo2ENTRY ~n := #in~n; 4296#L20 assume ~n < 1;#res := 0; 4292#fibo2FINAL assume true; 4290#fibo2EXIT >#52#return; 4255#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4254#fibo1FINAL assume true; 4252#fibo1EXIT >#46#return; 4211#L25-1 [2021-10-28 09:08:55,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:55,786 INFO L85 PathProgramCache]: Analyzing trace with hash -959890655, now seen corresponding path program 1 times [2021-10-28 09:08:55,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:55,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116328770] [2021-10-28 09:08:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:55,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 09:08:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:55,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:55,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:08:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:55,931 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-28 09:08:55,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:55,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116328770] [2021-10-28 09:08:55,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116328770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:55,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288974734] [2021-10-28 09:08:55,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:55,932 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:55,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:55,933 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:55,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-10-28 09:08:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:08:56,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:08:56,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288974734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:56,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:56,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-28 09:08:56,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551809598] [2021-10-28 09:08:56,327 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:08:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1353018526, now seen corresponding path program 1 times [2021-10-28 09:08:56,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:56,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582299266] [2021-10-28 09:08:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:56,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:08:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,421 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 09:08:56,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:56,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582299266] [2021-10-28 09:08:56,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582299266] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:56,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485400384] [2021-10-28 09:08:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:56,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:56,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:56,423 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:56,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-28 09:08:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:08:56,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-10-28 09:08:56,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485400384] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:56,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:56,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-10-28 09:08:56,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784787947] [2021-10-28 09:08:56,752 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:08:56,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:08:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:08:56,753 INFO L87 Difference]: Start difference. First operand 113 states and 135 transitions. cyclomatic complexity: 24 Second operand has 12 states, 10 states have (on average 2.7) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (7), 4 states have call predecessors, (7), 5 states have call successors, (7) [2021-10-28 09:08:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:56,894 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2021-10-28 09:08:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:08:56,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 121 states and 141 transitions. [2021-10-28 09:08:56,897 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 09:08:56,899 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 121 states to 117 states and 137 transitions. [2021-10-28 09:08:56,899 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 102 [2021-10-28 09:08:56,899 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 102 [2021-10-28 09:08:56,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 137 transitions. [2021-10-28 09:08:56,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:56,900 INFO L681 BuchiCegarLoop]: Abstraction has 117 states and 137 transitions. [2021-10-28 09:08:56,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states and 137 transitions. [2021-10-28 09:08:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2021-10-28 09:08:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.105263157894737) internal successors, (84), 78 states have internal predecessors, (84), 19 states have call successors, (19), 16 states have call predecessors, (19), 20 states have return successors, (32), 20 states have call predecessors, (32), 17 states have call successors, (32) [2021-10-28 09:08:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2021-10-28 09:08:56,905 INFO L704 BuchiCegarLoop]: Abstraction has 115 states and 135 transitions. [2021-10-28 09:08:56,905 INFO L587 BuchiCegarLoop]: Abstraction has 115 states and 135 transitions. [2021-10-28 09:08:56,905 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-28 09:08:56,905 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 115 states and 135 transitions. [2021-10-28 09:08:56,906 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-28 09:08:56,906 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:56,906 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:56,908 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:56,908 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:08:56,909 INFO L791 eck$LassoCheckResult]: Stem: 4831#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 4832#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 4852#L39 call main_#t~ret11 := fibo1(main_~x~0);< 4875#fibo1ENTRY ~n := #in~n; 4886#L10 assume !(~n < 1); 4884#L12 assume !(1 == ~n); 4881#L15 call #t~ret7 := fibo2(~n - 1);< 4882#fibo2ENTRY ~n := #in~n; 4900#L20 assume !(~n < 1); 4898#L22 assume !(1 == ~n); 4848#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4849#L10 assume !(~n < 1); 4864#L12 assume !(1 == ~n); 4837#L15 call #t~ret7 := fibo2(~n - 1);< 4869#fibo2ENTRY ~n := #in~n; 4871#L20 assume !(~n < 1); 4836#L22 assume !(1 == ~n); 4838#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4849#L10 assume !(~n < 1); 4864#L12 assume !(1 == ~n); 4837#L15 call #t~ret7 := fibo2(~n - 1);< 4869#fibo2ENTRY ~n := #in~n; 4871#L20 assume !(~n < 1); 4836#L22 assume !(1 == ~n); 4838#L25 call #t~ret9 := fibo1(~n - 1);< 4847#fibo1ENTRY ~n := #in~n; 4850#L10 assume !(~n < 1); 4891#L12 assume 1 == ~n;#res := 1; 4892#fibo1FINAL assume true; 4851#fibo1EXIT >#46#return; 4842#L25-1 call #t~ret10 := fibo1(~n - 2);< 4843#fibo1ENTRY ~n := #in~n; 4940#L10 assume ~n < 1;#res := 0; 4939#fibo1FINAL assume true; 4938#fibo1EXIT >#48#return; 4861#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4862#fibo2FINAL assume true; 4935#fibo2EXIT >#50#return; 4903#L15-1 call #t~ret8 := fibo2(~n - 2);< 4904#fibo2ENTRY ~n := #in~n; 4914#L20 assume !(~n < 1); 4910#L22 assume 1 == ~n;#res := 1; 4907#fibo2FINAL assume true; 4902#fibo2EXIT >#52#return; 4901#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4899#fibo1FINAL assume true; 4897#fibo1EXIT >#46#return; 4859#L25-1 [2021-10-28 09:08:56,909 INFO L793 eck$LassoCheckResult]: Loop: 4859#L25-1 call #t~ret10 := fibo1(~n - 2);< 4890#fibo1ENTRY ~n := #in~n; 4945#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume !(1 == ~n); 4853#L25 call #t~ret9 := fibo1(~n - 1);< 4856#fibo1ENTRY ~n := #in~n; 4895#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume !(1 == ~n); 4853#L25 call #t~ret9 := fibo1(~n - 1);< 4856#fibo1ENTRY ~n := #in~n; 4895#L10 assume !(~n < 1); 4893#L12 assume !(1 == ~n); 4855#L15 call #t~ret7 := fibo2(~n - 1);< 4879#fibo2ENTRY ~n := #in~n; 4878#L20 assume !(~n < 1); 4877#L22 assume 1 == ~n;#res := 1; 4865#fibo2FINAL assume true; 4866#fibo2EXIT >#50#return; 4857#L15-1 call #t~ret8 := fibo2(~n - 2);< 4860#fibo2ENTRY ~n := #in~n; 4936#L20 assume ~n < 1;#res := 0; 4926#fibo2FINAL assume true; 4872#fibo2EXIT >#52#return; 4874#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4876#fibo1FINAL assume true; 4887#fibo1EXIT >#46#return; 4888#L25-1 call #t~ret10 := fibo1(~n - 2);< 4942#fibo1ENTRY ~n := #in~n; 4944#L10 assume ~n < 1;#res := 0; 4941#fibo1FINAL assume true; 4917#fibo1EXIT >#48#return; 4916#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 4915#fibo2FINAL assume true; 4913#fibo2EXIT >#50#return; 4873#L15-1 call #t~ret8 := fibo2(~n - 2);< 4909#fibo2ENTRY ~n := #in~n; 4925#L20 assume !(~n < 1); 4923#L22 assume 1 == ~n;#res := 1; 4921#fibo2FINAL assume true; 4908#fibo2EXIT >#52#return; 4906#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 4905#fibo1FINAL assume true; 4896#fibo1EXIT >#46#return; 4859#L25-1 [2021-10-28 09:08:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1031604372, now seen corresponding path program 1 times [2021-10-28 09:08:56,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:56,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976483778] [2021-10-28 09:08:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:56,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 09:08:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:08:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-28 09:08:57,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:57,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976483778] [2021-10-28 09:08:57,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976483778] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:57,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580522657] [2021-10-28 09:08:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:57,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:57,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:57,055 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:57,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-28 09:08:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-28 09:08:57,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-28 09:08:57,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580522657] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:57,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:57,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-10-28 09:08:57,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117889569] [2021-10-28 09:08:57,460 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-28 09:08:57,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:57,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1888573374, now seen corresponding path program 1 times [2021-10-28 09:08:57,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:57,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51346736] [2021-10-28 09:08:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:57,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:08:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:08:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-10-28 09:08:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-28 09:08:57,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:57,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51346736] [2021-10-28 09:08:57,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51346736] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:57,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242844942] [2021-10-28 09:08:57,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:57,550 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:57,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:57,554 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:57,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-10-28 09:08:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:57,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:08:57,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 09:08:57,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242844942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:57,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:57,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 12 [2021-10-28 09:08:57,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290123491] [2021-10-28 09:08:57,939 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-28 09:08:57,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:08:57,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:08:57,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:08:57,940 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. cyclomatic complexity: 22 Second operand has 18 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 10 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2021-10-28 09:08:58,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:08:58,296 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2021-10-28 09:08:58,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:08:58,296 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 130 transitions. [2021-10-28 09:08:58,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:08:58,299 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 89 states and 95 transitions. [2021-10-28 09:08:58,299 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2021-10-28 09:08:58,300 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-28 09:08:58,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 95 transitions. [2021-10-28 09:08:58,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-28 09:08:58,300 INFO L681 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 09:08:58,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 95 transitions. [2021-10-28 09:08:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-10-28 09:08:58,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 61 states have internal predecessors, (64), 16 states have call successors, (16), 13 states have call predecessors, (16), 14 states have return successors, (15), 14 states have call predecessors, (15), 13 states have call successors, (15) [2021-10-28 09:08:58,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-10-28 09:08:58,304 INFO L704 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 09:08:58,304 INFO L587 BuchiCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-10-28 09:08:58,304 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-28 09:08:58,304 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 95 transitions. [2021-10-28 09:08:58,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-28 09:08:58,305 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-28 09:08:58,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-28 09:08:58,306 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:58,306 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:08:58,307 INFO L791 eck$LassoCheckResult]: Stem: 5582#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(18);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 5583#L-1 havoc main_#res;havoc main_#t~ret11, main_~x~0, main_~result~0;main_~x~0 := 5; 5601#L39 call main_#t~ret11 := fibo1(main_~x~0);< 5622#fibo1ENTRY ~n := #in~n; 5626#L10 assume !(~n < 1); 5648#L12 assume !(1 == ~n); 5588#L15 call #t~ret7 := fibo2(~n - 1);< 5616#fibo2ENTRY ~n := #in~n; 5619#L20 assume !(~n < 1); 5587#L22 assume !(1 == ~n); 5589#L25 call #t~ret9 := fibo1(~n - 1);< 5597#fibo1ENTRY ~n := #in~n; 5599#L10 assume !(~n < 1); 5613#L12 assume !(1 == ~n); 5593#L15 call #t~ret7 := fibo2(~n - 1);< 5646#fibo2ENTRY ~n := #in~n; 5644#L20 assume !(~n < 1); 5642#L22 assume !(1 == ~n); 5598#L25 call #t~ret9 := fibo1(~n - 1);< 5597#fibo1ENTRY ~n := #in~n; 5600#L10 assume !(~n < 1); 5611#L12 assume 1 == ~n;#res := 1; 5612#fibo1FINAL assume true; 5670#fibo1EXIT >#46#return; 5591#L25-1 call #t~ret10 := fibo1(~n - 2);< 5594#fibo1ENTRY ~n := #in~n; 5596#L10 assume ~n < 1;#res := 0; 5590#fibo1FINAL assume true; 5592#fibo1EXIT >#48#return; 5595#L25-2 #res := #t~ret9 + #t~ret10;havoc #t~ret9;havoc #t~ret10; 5602#fibo2FINAL assume true; 5614#fibo2EXIT >#50#return; 5585#L15-1 call #t~ret8 := fibo2(~n - 2);< 5637#fibo2ENTRY ~n := #in~n; 5656#L20 assume !(~n < 1); 5584#L22 assume 1 == ~n;#res := 1; 5586#fibo2FINAL assume true; 5636#fibo2EXIT >#52#return; 5634#L15-2 #res := #t~ret7 + #t~ret8;havoc #t~ret7;havoc #t~ret8; 5633#fibo1FINAL assume true; 5631#fibo1EXIT >#46#return; 5607#L25-1 call #t~ret10 := fibo1(~n - 2);< 5628#fibo1ENTRY ~n := #in~n; 5669#L10 assume !(~n < 1); 5623#L12 [2021-10-28 09:08:58,307 INFO L793 eck$LassoCheckResult]: Loop: 5623#L12 assume !(1 == ~n); 5609#L15 call #t~ret7 := fibo2(~n - 1);< 5615#fibo2ENTRY ~n := #in~n; 5657#L20 assume !(~n < 1); 5654#L22 assume !(1 == ~n); 5604#L25 call #t~ret9 := fibo1(~n - 1);< 5610#fibo1ENTRY ~n := #in~n; 5625#L10 assume !(~n < 1); 5623#L12 [2021-10-28 09:08:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash -279928922, now seen corresponding path program 2 times [2021-10-28 09:08:58,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:58,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028056015] [2021-10-28 09:08:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:58,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:58,318 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:58,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:58,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:58,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1039714728, now seen corresponding path program 2 times [2021-10-28 09:08:58,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:58,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050637998] [2021-10-28 09:08:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:58,332 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:58,337 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:08:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:08:58,340 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:08:58,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:08:58,340 INFO L85 PathProgramCache]: Analyzing trace with hash -296356787, now seen corresponding path program 3 times [2021-10-28 09:08:58,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:08:58,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080732797] [2021-10-28 09:08:58,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:08:58,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:08:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-10-28 09:08:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:08:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:08:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:08:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:08:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 09:08:58,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:08:58,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080732797] [2021-10-28 09:08:58,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080732797] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:58,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537997207] [2021-10-28 09:08:58,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:08:58,441 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:08:58,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:58,448 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:08:58,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-10-28 09:08:58,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-28 09:08:58,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:08:58,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:08:58,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:08:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 35 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 09:08:58,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537997207] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:08:58,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:08:58,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-10-28 09:08:58,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673690953] [2021-10-28 09:08:59,029 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:08:59,029 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:08:59,029 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:08:59,029 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:08:59,029 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-28 09:08:59,029 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,029 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:08:59,030 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:08:59,030 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2021-10-28 09:08:59,030 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:08:59,030 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:08:59,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,035 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,038 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,054 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:08:59,105 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:08:59,105 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-28 09:08:59,105 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,106 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-28 09:08:59,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:59,108 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:59,116 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:59,116 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret9=0} Honda state: {fibo2_#t~ret9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:59,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:59,149 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,153 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,158 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:59,158 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:59,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-28 09:08:59,177 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:59,177 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#in~n=0} Honda state: {fibo2_#in~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:59,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:59,210 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,213 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:59,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:59,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-28 09:08:59,245 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:59,245 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#res=0} Honda state: {fibo1_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:59,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:59,278 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,281 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,283 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:59,283 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:59,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-28 09:08:59,305 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:59,305 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_~n=0} Honda state: {fibo2_~n=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:59,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:59,338 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,339 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:59,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:59,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-28 09:08:59,352 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:59,352 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo1_#t~ret8=0} Honda state: {fibo1_#t~ret8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:59,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:59,371 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,372 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-28 09:08:59,373 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:59,373 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:59,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:59,381 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#res=0} Honda state: {fibo2_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:59,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:59,400 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,401 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-28 09:08:59,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:59,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:59,411 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-28 09:08:59,411 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {fibo2_#t~ret10=0} Honda state: {fibo2_#t~ret10=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-28 09:08:59,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-28 09:08:59,432 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,433 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-28 09:08:59,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-28 09:08:59,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:08:59,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-10-28 09:08:59,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:08:59,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:08:59,469 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:08:59,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-28 09:08:59,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-28 09:08:59,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-28 09:09:00,431 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-28 09:09:00,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-28 09:09:00,434 INFO L210 LassoAnalysis]: Preferences: [2021-10-28 09:09:00,435 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-28 09:09:00,435 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-28 09:09:00,435 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-28 09:09:00,435 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-28 09:09:00,435 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,435 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-28 09:09:00,435 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-28 09:09:00,435 INFO L133 ssoRankerPreferences]: Filename of dumped script: fibo_2calls_5-1.c_Iteration9_Loop [2021-10-28 09:09:00,435 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-28 09:09:00,435 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-28 09:09:00,436 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,445 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-28 09:09:00,517 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-28 09:09:00,518 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-28 09:09:00,518 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,519 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,527 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:09:00,536 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:09:00,536 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:09:00,536 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:09:00,536 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:09:00,536 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:09:00,537 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:09:00,537 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:09:00,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-28 09:09:00,549 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:09:00,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-28 09:09:00,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,582 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-10-28 09:09:00,583 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:09:00,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:09:00,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:09:00,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:09:00,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:09:00,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:09:00,591 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:09:00,591 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:09:00,592 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:09:00,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-10-28 09:09:00,612 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,612 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-10-28 09:09:00,614 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:09:00,621 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:09:00,621 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:09:00,621 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:09:00,621 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:09:00,621 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:09:00,621 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:09:00,621 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:09:00,622 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:09:00,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-10-28 09:09:00,642 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,643 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-10-28 09:09:00,644 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:09:00,652 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:09:00,652 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:09:00,652 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:09:00,652 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:09:00,652 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:09:00,652 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:09:00,652 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:09:00,653 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:09:00,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2021-10-28 09:09:00,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,674 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-10-28 09:09:00,680 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:09:00,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:09:00,687 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:09:00,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:09:00,688 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:09:00,688 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:09:00,688 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:09:00,688 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:09:00,713 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:09:00,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Ended with exit code 0 [2021-10-28 09:09:00,732 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,733 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-10-28 09:09:00,742 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:09:00,749 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:09:00,749 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:09:00,749 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:09:00,749 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:09:00,749 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:09:00,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:09:00,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:09:00,750 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:09:00,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Ended with exit code 0 [2021-10-28 09:09:00,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,770 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2021-10-28 09:09:00,771 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:09:00,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:09:00,778 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:09:00,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:09:00,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:09:00,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:09:00,779 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:09:00,779 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:09:00,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-28 09:09:00,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2021-10-28 09:09:00,800 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,801 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2021-10-28 09:09:00,802 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-28 09:09:00,809 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-28 09:09:00,809 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-28 09:09:00,809 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-28 09:09:00,809 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-28 09:09:00,809 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-28 09:09:00,811 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-28 09:09:00,811 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-28 09:09:00,813 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-28 09:09:00,815 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-28 09:09:00,815 INFO L444 ModelExtractionUtils]: 2 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-28 09:09:00,815 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-28 09:09:00,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:09:00,816 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-28 09:09:00,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2021-10-28 09:09:00,818 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-28 09:09:00,818 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-28 09:09:00,818 INFO L513 LassoAnalysis]: Proved termination. [2021-10-28 09:09:00,818 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(fibo1_~n) = 1*fibo1_~n Supporting invariants [] [2021-10-28 09:09:00,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2021-10-28 09:09:00,838 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-28 09:09:00,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:09:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:00,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:09:00,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:09:01,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2021-10-28 09:09:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:01,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:09:01,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:09:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:09:01,761 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-28 09:09:01,761 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:09:01,847 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2021-10-28 09:09:01,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 09:09:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:09:01,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-10-28 09:09:01,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 09:09:01,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:09:01,851 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:09:01,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:09:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:01,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:09:01,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:09:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:02,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:09:02,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:09:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:09:02,545 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-28 09:09:02,545 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:09:02,626 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 104 states and 111 transitions. Complement of second has 17 states. [2021-10-28 09:09:02,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 09:09:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:09:02,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 15 transitions. [2021-10-28 09:09:02,627 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 15 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 09:09:02,628 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:09:02,628 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-28 09:09:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:09:02,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:02,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:09:02,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:09:03,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:09:03,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:09:03,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:09:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:09:03,324 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 5 loop predicates [2021-10-28 09:09:03,324 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8 Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:09:03,462 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 89 states and 95 transitions. cyclomatic complexity: 8. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Result 135 states and 146 transitions. Complement of second has 23 states. [2021-10-28 09:09:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2021-10-28 09:09:03,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 4 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:09:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 41 transitions. [2021-10-28 09:09:03,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 8 letters. [2021-10-28 09:09:03,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:09:03,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 52 letters. Loop has 8 letters. [2021-10-28 09:09:03,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:09:03,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 41 transitions. Stem has 44 letters. Loop has 16 letters. [2021-10-28 09:09:03,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-28 09:09:03,467 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 146 transitions. [2021-10-28 09:09:03,469 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:09:03,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2021-10-28 09:09:03,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:09:03,469 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:09:03,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:09:03,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:09:03,476 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:09:03,476 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:09:03,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:09:03,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:09:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:09:03,477 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 14 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 9 states have internal predecessors, (33), 7 states have call successors, (11), 7 states have call predecessors, (11), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:09:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:09:03,477 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-28 09:09:03,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:09:03,478 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-28 09:09:03,478 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:09:03,478 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:09:03,478 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-28 09:09:03,478 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-28 09:09:03,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-28 09:09:03,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:09:03,479 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:09:03,479 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:09:03,479 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:09:03,479 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-28 09:09:03,479 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:09:03,479 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-28 09:09:03,479 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-28 09:09:03,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.10 09:09:03 BoogieIcfgContainer [2021-10-28 09:09:03,485 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-28 09:09:03,486 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:09:03,486 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:09:03,486 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:09:03,487 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:08:42" (3/4) ... [2021-10-28 09:09:03,490 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:09:03,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:09:03,491 INFO L168 Benchmark]: Toolchain (without parser) took 21895.58 ms. Allocated memory was 86.0 MB in the beginning and 167.8 MB in the end (delta: 81.8 MB). Free memory was 50.0 MB in the beginning and 103.7 MB in the end (delta: -53.7 MB). Peak memory consumption was 26.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:09:03,492 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:09:03,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.46 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 49.8 MB in the beginning and 92.0 MB in the end (delta: -42.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:09:03,493 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.68 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 90.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:09:03,493 INFO L168 Benchmark]: Boogie Preprocessor took 22.99 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 89.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:09:03,493 INFO L168 Benchmark]: RCFGBuilder took 408.03 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 80.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:09:03,494 INFO L168 Benchmark]: BuchiAutomizer took 21135.60 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 79.8 MB in the beginning and 103.7 MB in the end (delta: -23.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:09:03,494 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 167.8 MB. Free memory is still 103.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:09:03,496 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 86.0 MB. Free memory was 65.9 MB in the beginning and 65.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.46 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 49.8 MB in the beginning and 92.0 MB in the end (delta: -42.3 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.68 ms. Allocated memory is still 115.3 MB. Free memory was 92.0 MB in the beginning and 90.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.99 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 89.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 408.03 ms. Allocated memory is still 115.3 MB. Free memory was 89.6 MB in the beginning and 80.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 21135.60 ms. Allocated memory was 115.3 MB in the beginning and 167.8 MB in the end (delta: 52.4 MB). Free memory was 79.8 MB in the beginning and 103.7 MB in the end (delta: -23.8 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.16 ms. Allocated memory is still 167.8 MB. Free memory is still 103.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (8 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(n) and consists of 7 locations. One deterministic module has affine ranking function n and consists of 12 locations. One deterministic module has affine ranking function n and consists of 13 locations. One nondeterministic module has affine ranking function n and consists of 8 locations. 8 modules have a trivial ranking function, the largest among these consists of 18 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 21.0s and 10 iterations. TraceHistogramMax:8. Analysis of lassos took 13.9s. Construction of modules took 1.2s. Büchi inclusion checks took 5.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 10. Automata minimization 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 98 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 184 states and ocurred in iteration 4. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/16 HoareTripleCheckerStatistics: 244 SDtfs, 525 SDslu, 839 SDs, 0 SdLazy, 1958 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT2 SILN0 SILU0 SILI4 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax100 hnf91 lsp90 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq192 hnf91 smp86 dnf100 smp100 tf109 neg97 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 60ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-28 09:09:03,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-10-28 09:09:03,742 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2021-10-28 09:09:03,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-28 09:09:04,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-28 09:09:04,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2021-10-28 09:09:04,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-10-28 09:09:04,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-10-28 09:09:04,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-28 09:09:05,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2021-10-28 09:09:05,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-10-28 09:09:05,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_507f9424-5ef6-445f-a1b7-baaf54de7207/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...